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unit VirtualShellUtilities;
// Version 1.1.17
// The contents of this file are subject to the Mozilla Public License
// Version 1.1 (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the
// License at
//
// http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an
// " AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either expressed or
// implied. See the License for the specific language governing rights
// and limitations under the License.
//
//
// Alternatively, the contents of this file may be used under
// the terms of the GNU General Public License Version 2 or later
// (the "GPL"), in which case the provisions of the GPL are applicable
// instead of those above. If you wish to allow use of your version of
// this file only under the terms of the GPL and not to allow others to
// use your version of this file under the MPL, indicate your decision
// by deleting the provisions above and replace them with the notice and
// other provisions required by the GPL. If you do not delete the provisions
// above, a recipient may use your version of this file under either the
// MPL or the GPL.
//
// The initial developer of this code is Jim Kueneman <jimdk@mindspring.com>
//
// Credits for valuable information and code gathered from newsgroups and
// websites:
// Angus Johnson for his GetDiskFreeSpaceFAT32 function from UNDO
//
//----------------------------------------------------------------------------
//
// THINGS TODO:
// - The children of History will show up as "MSHist0133435509090" type Strings
// when using IShellDetails or IShellFolder2, don't know why.
// - There are a few areas that are not Unicode compliant they include the following
// functions:
// ConvertLocalStrToTFileTime();
// ConvertTFileTimeToLocalStr();
// Format
// AnsiUpperCase
// The main place these exist are if details are being used in VETColumns or
// User defined columns. The ShellColumns mode get the details from the shell
// so they are already Unicode (if running under NT)
// Case conversion requires a lot of overhead to be pulled in from Mikes Unicode
// unit so that is why it is not been inplemented.
// - Implement a "Quiet" flag so context menu actions can be done without the confimation dialogs (CMInvokeCommandInfoEx)
//
// History
//
// 08.31.02
// - Going to try to allow the Parent to persist if the namespace creates it itself.
// This is called a LOT more than I though expecially for the ExplorerListview
//
// 7.05.02
// - Dymamiclly loaded SHGetDataFromIDListW for Win95 compatibility
//
// 2.07.02
// - Changed the name of the System property to SystemFile do to strange conficts
// with the "System" unit
//
// 1.23.02
// - Cleaned up the unit, added more comments, orginized the interface section
// better. Eliminated rarely used cache entries for a 30% decrease in
// a total instance size of TNamespace.
// - Moved the ShellLink object into the unit to be used in TNamespace to reduce
// size of TNamespace
//
// 1.22.02
// - Removed 6 Boolean fields in TNamespace and converted them to a set.
// Reduces the footprint of a TNamespace object by 4 bytes x 5 fields = 20 bytes!
//
// 12.08.01
// - Added XP to the special check when enumerating the Scanners and Cameras
// namespace. It appears M$ took this directly from ME, bugs and all.
//
// 12.04.01
// - Updated symbols with the $EXTERNALSYM directive to help out BCB users
//
// 11.09.01
// - Moved TStreamableClass from VirtualExplorerTree.pas to VirtualShellUtilities.pas
//
// 10.28.01
// - Added full support for the IShellLink methods to TNamespace
//
// 10.15.01
// - Moved the ThreadNotifyThread and associated classes to VirtualShellUtilities.
// This move allows other components to use the Thread, such as the
// TShellToolbar, and TDriveToolbar. Reworked the registration and
// creation/deletion aspects of it. Now to register a window (not just a VET)
// with it use the new global function in Shell Utilities:
// procedure RegisterShellNotifyControl(Control: TWinControl);
// procedure UnRegisterShellNotifyControl(Control: TWinControl);
// then respond to the WM_SHELLNOTIFY message.
//
//----------------------------------------------------------------------------
interface
{$include ..\Include\Compilers.inc}
{$include ..\Include\VSToolsAddIns.inc}
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
ImgList, ShlObj, ShellAPI, ActiveX, ComObj, Registry, Menus,
{$IFDEF COMPILER_6_UP}
Variants,
{$ENDIF}
VirtualResources, VirtualUtilities, VirtualShellTypes,
{$IFDEF VIRTUALNAMESPACES} VirtualNamespace, {$ENDIF}
VirtualPIDLTools, VirtualUnicodeDefines;
const
DefaultDetailColumns = 5;
{$EXTERNALSYM SHCONTF_INIT_ON_FIRST_NEXT}
SHCONTF_INIT_ON_FIRST_NEXT = $0100; // allow EnumObject() to return before validating enum")
{$EXTERNALSYM SHCONTF_NETPRINTERSRCH}
SHCONTF_NETPRINTERSRCH = $0200; // hint that client is looking for printers")
{$EXTERNALSYM SHCONTF_SHAREABLE}
SHCONTF_SHAREABLE = $0400; // hint that client is looking sharable resources (remote shares)")
{$EXTERNALSYM SHCONTF_STORAGE}
SHCONTF_STORAGE = $0800; // include all items with accessible storage and their ancestors")
{$EXTERNALSYM SFGAO_CAPABILITYMASK}
SFGAO_CAPABILITYMASK = $00000177;
{$EXTERNALSYM SFGAO_DISPLAYATTRMASK}
SFGAO_DISPLAYATTRMASK = $000FC000;
{$EXTERNALSYM SFGAO_CONTENTSMASK}
SFGAO_CONTENTSMASK = $80000000;
{$EXTERNALSYM SFGAO_STORAGECAPMASK}
SFGAO_STORAGECAPMASK = $70C50008;
SHORTCUT_ICON_INDEX = 29; // This is cheezy crappy stupid and dumb but
// I can't find a way to get the link index
SHELL_NAMESPACE_ID = -1; // ID of a basic Shell Namespace based TNamespace
SHGDN_FOREDITING = $1000;
DEFAULTPIDLARRAYSIZE = 8192; // Default size for the TPIDLArray
STREAM_VERSION_DEFAULT = -1; // Default Stream version for TStreamableClass.LoadFromStream
// if this value is seen the LoadFromStream method should read the version
// from the stream else it should use the passed version in the method
STR_IMAGE_THREAD_EVENT = 'jdkImageThreadEvent';
VET_DEFAULT_COLUMNWIDTHS: array[0..36] of integer = (
180, // Name
96, // Size
120, // Type
120, // Modified
60, // Attributes
180, // Comment
120, // Created
120, // Accessed
120, // Owner
120, // Author
120, // Title
120, // Subject
120, // Catagory
60, // Pages
120, // Copywrite
120, // Company Name
120, // Module Description
120, // Module Version
120, // Product Name
120, // Product Version
72, // Sender Name
90, // Recipient Name
102, // Recipient Number
30, // Csid
30, // Tsid
108, // Transmission Time
60, // Caller ID
48, // Routing
180, // Audio Format
180, // Sample Rate
180, // Audio Sample Size
180, // Channels
180, // Play Length
180, // Frame Count
180, // Frame Rate
180, // Video Sample Size
180 // Video Compression
);
VET_DEFAULT_DRIVES_COLUMNWIDTHS: array[0..3] of integer = (
180, // Name
120, // Type
96, // Total Size
96 // Free Space
);
VET_DEFAULT_CONTROLPANEL_COLUMNWIDTHS: array[0..1] of integer = (
180, // Name
300 // Description
);
VET_DEFAULT_NETWORK_COLUMNWIDTHS: array[0..1] of integer = (
180, // Name
300 // Description
);
{-------------------------------------------------------------------------------}
{ Custom enumerated types }
{-------------------------------------------------------------------------------}
type
TDefaultFolderIcon = (
diNormalFolder, // Retrieve the index for a normal file folder icon
diOpenFolder, // Retrieve the index for a normal file folder icon in the open state
diUnknownFile, // Retrieve the index for an icon for a file that has no association
diLink, // Retrieve the index for link overlay icon
diMyDocuments // Index of MyDocuments icon
);
type
TNamespaceState = (
nsFreePIDLOnDestroy, // If true the object free the PIDL with the system allocator when freed
nsIsRecycleBin, // Recyclebin does not cooperate very well so we have do extra checks for various reasons so cache this
nsRecycleBinChecked, // Flag to see if above is valid.
nsOwnsParent, // If a namespace is created from a complex PIDL for some methods the parent is needed. If so a Parent namespace is created so this instance owns it and must free it.
nsShellDetailsSupported, // Instead of a costly call to see if interface exists when it does not we only check once then cache the result
nsShellFolder2Supported, // Same idea as ShellDetailsSupported, if it does not exist don't waste time constantly checking
nsShellOverlaySupported, // Same idea as ShellDetailsSupported, if it does not exist don't waste time constantly checking
nsThreadedIconLoaded, // To keeping the threaded icon option fast and interuptable need to track if a thread it currently trying to extract an image index for the namespace, Threaded image is retrieved
nsThreadedIconLoading, // To keeping the threaded icon option fast and interuptable need to track if a thread it currently trying to extract an image index for the namespace, it is in the queue to be retieved
nsThreadedImageLoaded, // To keeping the threaded icon option fast and interuptable need to track if a thread it currently trying to extract an image index for the namespace, Threaded image is retrieved
nsThreadedImageLoading, // To keeping the threaded icon option fast and interuptable need to track if a thread it currently trying to extract an image index for the namespace, it is in the queue to be retieved
nsIconIndexChanged // Sets a flag to track when the IconIndex changed between calls to GetIconIndex. Usually caused by a Thread Setting the icon index
);
TNamespaceStates = set of TNamespaceState;
type
TSHLimitInputEdit = function(hWndEdit: HWND; psf: IShellFolder): HRESULT; stdcall;
TShellCache = set of ( // Valid entries in the Namespace data cache
scInFolderName,
scNormalName,
scParsedName,
scSmallIcon,
scSmallOpenIcon,
scCreationTime,
scLastAccessTime,
scLastWriteTime,
scFileSize,
scFileSizeKB,
scFileType,
scInvalidIDListData, // If SHGetDataFromIDList fails flag it so we won't try again.
scFileSystem,
scFolder,
scCanDelete,
scCanRename,
scGhosted,
scCanCopy,
scCanMove,
scCanLink,
scLink,
scFileSysAncestor,
scCompressed,
scFileTimes,
scSupportedColumns,
scFolderSize, // Recursivly calculated size of folder contents
scVirtualHook, // Namespace is the invisible parent of the RootVirtualNamespace
scHookedNamespace, // Namespace has custom sub items injected through SubFolderHook property
scVirtualNamespace, // Namespace is a virtual namespace
scRootVirtualNamespace, // Namespace is the Root of the Custom Namespace Branch. If a real NS is hooked it is the namespace under the caSubItemHook namespace
scHardHookedNamespace // Namespace is a hard hooked, this means it will show user defined details if defined instead of using the real namespaces parent to create the details
);
{ This stores the state of the cached folder attribute. }
TCacheAttributes = set of (
caFileSystem, // Namespace is part of the file system
caFolder, // Namespace is a Folder (not necessarily a directory)
caCanDelete, // Namespace can be deleted
caCanRename, // Namespace can be renamed
caGhosted, // Namespace is should display a ghosted icon
caCanCopy, // Namespace can be copied
caCanMove, // Namespace can be moved to a different location
caCanLink, // Namespace can create a link to itself
caLink, // Namespace *is* a link
caFileSysAncestor, // Namespace is an ancestor of a file system namespace
caCompressed, // Namespace represents a compressed folder
caVirtualHook, // Namespace is the invisible parent of the RootVirtualNamespace
caHookedNamespace, // Namespace has custom sub items injected through SubFolderHook property
caVirtualNamespace, // Namespace is a virtual namespace
caRootVirtualNamespace, // Namespace is the Root of the Custom Namespace Branch. If a real NS is hooked it is the namespace under the caSubItemHook namespace
caHardHookedNamespace // Namespace is a hard hooked, this means it will show user defined details if defined instead of using the real namespaces parent to create the details
);
{ Used in IShellFolder2.GetDefaultColumnState }
TSHColumnState = (
csTypeString, // A string.
csTypeInt, // An integer.
csTypeDate, // A date.
csOnByDefault, // Should be shown by default in the Microsoft Windows Explorer Details view.
csSlow, // Extracting information about the column can be time consuming.
csExtended, // Provided by a handler, not the folder object.
csSecondaryUI, // Not displayed in the context menu, but listed in the More dialog box.
csHidden // Not displayed in the user interface.
);
TSHColumnStates = set of TSHColumnState;
THotKeyModifier = ( // For IShellLink
hkmAlt, // HOTKEYF_ALT
hkmControl, // HOTKEYF_CONTROL
hkmExtendedKey, // HOTKEYF_EXT
hkmShift // HOTKEYF_SHIFT
);
THotKeyModifiers = set of THotKeyModifier;
TCmdShow = ( // For IShellLink
swHide, // Hides the window and activates another window.
swMaximize, // Maximizes the specified window.
swMinimize, // Minimizes the specified window and activates the next top-level window in the Z order.
swRestore, // Activates and displays the window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when restoring a minimized window.
swShow, // Activates the window and displays it in its current size and position.
swShowDefault, // Sets the show state based on the SW_ flag specified in the STARTUPINFO structure passed to the CreateProcess function by the program that started the application.
swShowMinimized, // Activates the window and displays it as a minimized window.
swShowMinNoActive, // Displays the window as a minimized window. The active window remains active.
swShowNA, // Displays the window in its current state. The active window remains active.
swShowNoActive, // Displays a window in its most recent size and position. The active window remains active.
swShowNormal // Activates and displays a window. If the window is minimized or maximized, Windows
); // restores it to its original size and position. An application should specify this flag
// when displaying the window for the first time.
TIconSize = (
icSmall, // Small Shell size icon, usually 16x16
icLarge // Large TListview size Icon, usually 32x32
);
TFileSort = ( // Used in the ShellSortHelper class
fsFileType, // Sort by the File Type name
fsFileExtension // Sort by the file extenstion
);
TObjectDescription = ( // Return from SHGetDataFromIDList with SHGDFIL_DESCRIPTIONID param
odError, // The call Failed for some reason
odRootRegistered, // The item is a registered item on the desktop.
odFile, // The item is a file.
odDirectory, // The item is a folder.
odUnidentifiedFileItem, // The item is an unidentified item in the file system.
od35Floppy, // The item is a 3.5-inch floppy drive.
od525Floppy, // The item is a 5.25-inch floppy drive.
odRemovableDisk, // The item is a removable disk drive.
odFixedDrive, // The item is a fixed disk drive.
odMappedDrive, // The item is a drive that is mapped to a network share.
odCDROMDrive, // The item is a CD-ROM drive.
odRAMDisk, // The item is a RAM disk.
odUnidentifiedDevice, // The item is an unidentified system device.
odNetworkDomain, // The item is a network domain.
odNetworkServer, // The item is a network server.
odNetworkShare, // The item is a network share.
odNetworkRestOfNet, // Not currently used.
odUnidentifiedNetwork, // The item is an unidentified network resource.
odComputerImaging, // Not currently used.
odComputerAudio, // Not currently used.
odShareDocuments // The item is the system shared documents folder.
);
TDetailsColumnTitleInfo = (
tiCenterAlign, // The header title is Center Aligned
tiLeftAlign, // The header title is Left Aligned
tiRightAlign, // The header title is Right Aligned
tiContainsImage // The header title is Contains an Image (were do you get the image???)
);
{-------------------------------------------------------------------------------}
{-------------------------------------------------------------------------------}
{ Custom Data structures }
{-------------------------------------------------------------------------------}
type
TNamespace = class; // Forward
TExtractImage = class; // Forward
TMenuItemIDArray = array of cardinal;
TVisibleColumnIndexArray = array of Word; // Array of the column indexes that are currently visible for a namespace
{ Array that contains the cached information for the folder. }
TCacheData = packed record
Attributes: TCacheAttributes; // Boolean attributes for the namespace are saved as bits
SmallIcon, // Index in the ShellImageList of the normal icon
SmallOpenIcon: integer; // Index in the ShellImageList of the open or selected icon
InFolderName, // InFolder display name for the namespace
NormalName, // Normal display name for the namespace
ParsedName, // The Path of the namespace if it is a file object, if not it is usually the same as NameNormal
CreationTime, // String of the object creation time in details mode
LastAccessTime, // String of the last accessed time in details mode
LastWriteTime, // String of the last write time in details mode
FileSize, // String of the file size "23,0000"
FileSizeKB, // String of the file size ala Explorer style i.e. "23 KB"
FileType: WideString; // @@@@ FileType shown in Explorer details mode
SupportedColumns: integer; // Number of supported columns in details mode
FolderSize: Int64; // Recursivly calcuated size of folder contents
OverlayIndex, // Cache the Index of the Overlay
OverlayIconIndex: Integer // Cache the Index of the Overlay Icon
end;
{ Cache record tracks which information in the Data structure is valid with the }
{ ShellCacheFlags. }
TShellCacheRec = packed record
ShellCacheFlags: TShellCache; // If flag is set the corresponding data stored in Data is valid
Data: TCacheData; // Cached data for fast retrieval
end;
PSHGetFileInfoRec = ^TSHGetFileInfoRec;
TSHGetFileInfoRec = packed record
FileType: WideString; // Holds the File Type column detail if not using ShellColumns (using VET or custom columns)
end;
TPIDLArray = array of PItemIDList;
TRelativePIDLArray = TPIDLArray;
TAbsolutePIDLArray = TPIDLArray;
TNamespaceArray = array of TNamespace;
{-------------------------------------------------------------------------------}
// Custom Exceptions
EVSTInvalidFileName = class(Exception)
end;
{-------------------------------------------------------------------------------}
{ Persistent Storing and Recreating VET }
{-------------------------------------------------------------------------------}
{$IFNDEF T2H}
TStreamableClass = class(TPersistent)
private
FStreamVersion: integer;
public
constructor Create;
procedure LoadFromFile(FileName: WideString; Version: integer = 0; ReadVerFromStream: Boolean = False); virtual;
procedure LoadFromStream(S: TStream; Version: integer = 0; ReadVerFromStream: Boolean = False); virtual;
procedure SaveToFile(FileName: WideString; Version: integer = 0; ReadVerFromStream: Boolean = False); virtual;
procedure SaveToStream(S: TStream; Version: integer = 0; WriteVerToStream: Boolean = False); virtual;
property StreamVersion: integer read FStreamVersion;
end;
{$ENDIF T2H}
{$IFNDEF T2H}
TStreamableList = class(TList)
private
FStreamVersion: integer;
public
constructor Create;
procedure LoadFromFile(FileName: WideString; Version: integer = 0; ReadVerFromStream: Boolean = False); virtual;
procedure LoadFromStream(S: TStream; Version: integer = 0; ReadVerFromStream: Boolean = False); virtual;
procedure SaveToFile(FileName: WideString; Version: integer = 0; ReadVerFromStream: Boolean = False); virtual;
procedure SaveToStream(S: TStream; Version: integer = 0; WriteVerToStream: Boolean = False); virtual;
property StreamVersion: integer read FStreamVersion;
end;
{$ENDIF T2H}
{-------------------------------------------------------------------------------}
{-------------------------------------------------------------------------------}
{ Our own COM like referenced classes }
{-------------------------------------------------------------------------------}
{$IFNDEF T2H}
TReferenceCounted = class
protected
FRefCount: integer;
public
procedure AddRef;
procedure Release;
end;
{$ENDIF T2H}
{ Reference counted TList, much like a COM object but the compiler does not }
{ add the AddRef and Release call automaticlly. }
{$IFNDEF T2H}
TReferenceCountedList = class(TList)
protected
FRefCount: integer;
public
procedure AddRef;
procedure Release;
property RefCount: integer read FRefCount;
end;
{$ENDIF T2H}
{-------------------------------------------------------------------------------}
{ Encapsulates IExtractImage, ASCI and Unicode }
{-------------------------------------------------------------------------------}
TExtractImage = class
private
FFlags: Longword; // Sets how the image is to be handled see IEIFLAG_xxxx
FPriority: Longword; // Returns from GetLocation call the priority if IEIFLAG_ASYNC is used above
FHeight: Longword; // Desired image height
FWidth: Longword; // Desired image Width
FColorDepth: Longword; // Desired color depth
FExtractImageInterface: IExtractImage; // The interface
FExtractImage2Interface: IExtractImage2; // The interface for image2
FOwner: TNamespace; // The Owner namespace
FPathExtracted: Boolean;
function GetImage: TBitmap;
function GetImagePath: WideString;
function GetExtractImageInterface: IExtractImage;
function GetExtractImageInterface2: IExtractImage2;
protected
property PathExtracted: Boolean read FPathExtracted write FPathExtracted;
public
constructor Create;
property ColorDepth: Longword read FColorDepth write FColorDepth;
property ImagePath: WideString read GetImagePath;
property Image: TBitmap read GetImage;
property ExtractImageInterface: IExtractImage read GetExtractImageInterface;
property ExtractImage2Interface: IExtractImage2 read GetExtractImageInterface2;
property Flags: Longword read FFlags write FFlags;
property Height: Longword read FHeight write FHeight;
property Owner: TNamespace read FOwner write FOwner;
property Priority: Longword read FPriority;
property Width: Longword read FWidth write FWidth;
end;
{-------------------------------------------------------------------------------}
{-------------------------------------------------------------------------------}
{ Encapsulates IShellLink, ASCI and Unicode }
{-------------------------------------------------------------------------------}
TVirtualShellLink = class(TComponent)
private
FFileName: WideString; // File name of the lnk file
FShellLinkA: IShellLink; // ShellLink interface
FShellLinkW: IShellLinkW; // ShellLinkW interface
FIconIndex: integer; // Index of the icon to be used with the link
FTargetIDList: PItemIDList; // If the Target is a virtual object the PIDL is the only way to make the link
FShowCmd: TCmdShow; // How to show the window of the target application
FHotKeyModifiers: THotKeyModifiers; // The key modifiers for short cuts
FTargetPath: WideString; // The target that will be executed
FArguments: WideString; // Any arguments to be passed to the target
FDescription: WideString; // A description that will be shown in the properties dialog
FWorkingDirectory: WideString; // The directory the target application will have set as its current directory
FIconLocation: WideString; // The file that has the icon for the link
FHotKey: Word; // The HotKey to execute the link, used with the FHotKeyModifiers
FSilentWrite: Boolean; // Do not check parameters before writing lnk file and show a warning
function GetShellLinkAInterface: IShellLinkA;
function GetShellLinkWInterface: IShellLinkW;
protected
procedure FreeTargetIDList;
public
destructor Destroy; override;
function ReadLink(LinkFileName: WideString): Boolean;
function WriteLink(LinkFileName: WideString): Boolean;
property Arguments: WideString read FArguments write FArguments;
property Description: WideString read FDescription write FDescription;
property FileName: WideString read FFileName write FFileName;
property HotKey: Word read FHotKey write FHotKey;
property HotKeyModifiers: THotKeyModifiers read FHotKeyModifiers write FHotKeyModifiers;
property IconIndex: integer read FIconIndex write FIconIndex;
property IconLocation: WideString read FIconLocation write FIconLocation;
property TargetIDList: PItemIDList read FTargetIDList write FTargetIDList;
property ShellLinkAInterface: IShellLink read GetShellLinkAInterface;
property ShellLinkWInterface: IShellLinkW read GetShellLinkWInterface;
property ShowCmd: TCmdShow read FShowCmd write FShowCmd; // SW_XXXX contants
property SilentWrite: Boolean read FSilentWrite write FSilentWrite;
property TargetPath: WideString read FTargetPath write FTargetPath;
property WorkingDirectory: WideString read FWorkingDirectory write FWorkingDirectory;
end;
{-------------------------------------------------------------------------------}
// General helper class to sort Shell related objects. Uses mainly to sort
// columns in details mode
TShellSortHelper = class
private
FFileSort: TFileSort; // Defines if SortType sorts by the type string or the file extension
public
function CompareIDSort(SortColumn: integer; NS1, NS2: TNamespace): Integer; virtual;
function DiscriminateFolders(NS1, NS2: TNamespace): Integer; virtual;
function SortFileSize(NS1, NS2: TNamespace): Integer; virtual;
function SortFileTime(FT1, FT2: TFileTime; NS1, NS2: TNamespace): Integer; virtual;
function SortString(S1, S2: WideString; NS1, NS2: TNamespace): Integer; virtual;
function SortType(NS1, NS2: TNamespace): Integer; virtual;
property FileSort: TFileSort read FFileSort write FFileSort;
end;
{-------------------------------------------------------------------------------}
{ Function definitions }
{-------------------------------------------------------------------------------}
// Return True if VT adds a node to the tree this keeps the item count returned
// by TNamespace.EnumFolder correct. To stop the enumeration set Terminate to true
TEnumFolderCallback = function(APIDL: PItemIDList; AParent: TNamespace;
Data: Pointer; var Terminate: Boolean): Boolean of object;
TContextMenuCmdCallback = procedure(Namespace: TNamespace; Verb: WideString;
MenuItemID: Integer; var Handled: Boolean) of object;
TContextMenuShowCallback = procedure(Namespace: TNamespace; Menu: hMenu;
var Allow: Boolean) of object;
TContextMenuAfterCmdCallback = procedure(Namespace: TNamespace; Verb: WideString;
MenuItemID: Integer; Successful: Boolean) of object;
{-------------------------------------------------------------------------------}
{-------------------------------------------------------------------------------}
{ TNamespace, encapsulates the Windows Shell Namespace }
{-------------------------------------------------------------------------------}
{ TNamespace is a class that encapsulates the IShellFolder interface. It }
{ simplifies shell interfaces by hiding the overhead of PIDLs and COM. }
{ Most properties and methods have a direct corrolation to the functions }
{ exposed by IShellFolder. }
TNamespace = class
private
FAbsolutePIDL: PItemIDList; // The Absolute PIDL of that represents the namespace
FCurrentContextMenu: IContextMenu; // The basic interface to create a shell context menu, need to save because of ownerdraw callbacks (maybe this one is not necessary IContextMenu2 only supports this)
FCurrentContextMenu2: IContextMenu2; // Extends the context menu interface to include ownerdraw items, need to save because of ownerdraw callbacks
FDropTargetInterface: IDropTarget; // Interface to handle a drag Drop on the namespace
FExtractImage: TExtractImage; // Encapsulate the seldom used IExtractImage inteface saving memory allocation in the TNamespace when not used
FImage: TBitmap; // The image extracted from the IExtractImage interface
FNamespaceID: integer; // ID of the namespace. Used to pick out any custom namespace objects from real shell supplied ones
FOldWndProcForContextMenu: TWndMethod; // OldWndProc of the ContextMenu owner used in InternalShowContextMenu
FParent: TNameSpace; // The parent of this namespace, may be owned by this decenant see OwnsParent property
FRelativePIDL: PItemIDList; // The relative PILD that can be used the the ParentNamespace. It is a pointer to the last ID of of AbsolutePILD so *don't* free it
FShellDetailsInterface: {$IFNDEF CPPB_6_UP}IShellDetails{$ELSE}IShellDetailsBCB6{$ENDIF}; // Interface to deal with the information in the columns in details view (superceded by IShellFolder2 )
FShellFolder: IShellFolder; // IShellFolder is the building block interface that defines the namespaces attributes
FShellFolder2: IShellFolder2; // Expands IShellFolder handling the column details in Details mode, only works on Win2k-WinMe and up
FShellIconInterface: IShellIcon; // Interface to extract only the index of the icon in the system imagelist
FShellLink: TVirtualShellLink; // Object to read and write attributes to shortcut namespaces (files)
FSHGetFileInfoRec: PSHGetFileInfoRec; // Stores cached info from a call to SHGetFileInfo(A or W)
FStates: TNamespaceStates; // Dynamic state of the TNamespace
FTag: integer;
FQueryInfoInterface: IQueryInfo; // Interface for the popup InfoTips on folders in Win2k-WinME and up
FWin32FindDataA: PWin32FindDataA; // pointer to an allocated structure for an ASCI window file information if is is a file object
FWin32FindDataW: PWin32FindDataW; // pointer to an allocated structure for an Unicode window file information if is is a file object
FSystemIsSuperHidden: Boolean; // Holds the result of if the system has the SuperHiddenFile flag set in the registry
FShellIconOverlayInterface: IShellIconOverlay;
FCategoryProviderInterface: ICategoryProvider;
FBrowserFrameOptionsInterface: IBrowserFrameOptions;
FQueryAssociationsInterface: IQueryAssociations;
{$IFDEF VIRTUALNAMESPACES}
FShellFolderHook: IShellFolder;
function GetIsHookedNamespace: Boolean;
function GetIsRootVirtualNamespace: Boolean;
function GetIsVirtualHook: Boolean;
function GetIsVirtualNamespace: Boolean;
function GetIsHardHookedNamespace: Boolean;
{$ENDIF}
function GetBrowsable: Boolean;
function GetCLSID: TGUID;
function GetContextMenuInterface: IContextMenu;
function GetContextMenu2Interface: IContextMenu2;
function GetContextMenu3Interface: IContextMenu3;
function GetCreationDateTime: TDateTime;
function GetDataObjectInterface: IDataObject;
function GetDescription: TObjectDescription;
function GetDetailsSupported: Boolean;
function GetDropTargetInterface: IDropTarget;
function GetExtractIconAInterface: IExtractIconA;
function GetExtractIconWInterface: IExtractIconW;
function GetExtractImage: TExtractImage;
function GetFreePIDLOnDestroy: Boolean;
function GetIconIndexChanged: Boolean;
function GetLastAccessDateTime: TDateTime;
function GetLastWriteDateTime: TDateTime;
function GetParentShellDetailsInterface: {$IFNDEF CPPB_6_UP}IShellDetails{$ELSE}IShellDetailsBCB6{$ENDIF};
function GetParentShellFolder2: IShellFolder2;
function GetQueryInfoInterface: IQueryInfo;
function GetShellDetailsInterface: {$IFNDEF CPPB_6_UP}IShellDetails{$ELSE}IShellDetailsBCB6{$ENDIF};
function GetShellIconInterface: IShellIcon;
function GetShellFolder: IShellFolder;
function GetShellFolder2: IShellFolder2;
function GetShellLink: TVirtualShellLink;
function GetSubFolders: Boolean;
function GetThreadedIconLoaded: Boolean;
function GetThreadIconLoading: Boolean;
procedure SetFreePIDLOnDestroy(const Value: Boolean);
procedure SetIconIndexChanged(const Value: Boolean);
procedure SetThreadIconLoading(const Value: Boolean);
function GetThreadedImageLoaded: Boolean;
function GetThreadedImageLoading: Boolean;
procedure SetThreadImageLoading(const Value: Boolean);
function GetShellIconOverlayInterface: IShellIconOverlay;
function GetOverlayIconIndex: Integer;
function GetOverlayIndex: Integer;
function GetCanMoniker: Boolean;
function GetEncrypted: Boolean;
function GetHasStorage: Boolean;
function GetIsSlow: Boolean;
function GetStorage: Boolean;
function GetStorageAncestor: Boolean;
function GetStream: Boolean;
function GetCategoryProviderInterface: ICategoryProvider;
function GetCategoryAlphabetical: ICategorizer;
function GetCategoryDriveSize: ICategorizer;
function GetCategoryDriveType: ICategorizer;
function GetCategoryFreeSpace: ICategorizer;
function GetCategorySize: ICategorizer;
function GetCategoryTime: ICategorizer;
function GetBrowserFrameOptionsInterface: IBrowserFrameOptions;
function GetQueryAssociationsInterface: IQueryAssociations;
protected
{ Make the Cache Data and property getters available to decendants. This }
{ will allow decendants of TNamespace to be created so "virtual namespaces" }
{ can be created. It is possible to create a "namespace extension" without }
{ really doing it! }
{ None of interface properties are here because they only make sense for }
{ actual COM namespaces. }
FShellCache: TShellCacheRec;
{ Virtual Property Setters }
function GetArchive: Boolean; virtual;
function GetAttributesString: WideString; virtual;
function GetCanCopy: Boolean; virtual;
function GetCanDelete: Boolean; virtual;
function GetCanLink: Boolean; virtual;
function GetCanMove: Boolean; virtual;
function GetCanRename: Boolean; virtual;
function GetCompressed: Boolean; virtual;
function GetCreationTime: WideString; virtual;
function GetCreationTimeRaw: TFileTime; virtual;
function GetDirectory: Boolean; virtual;
function GetDropTarget: Boolean; virtual;
function GetExtension: WideString; virtual;
function GetFileName: WideString; virtual;
function GetFileSysAncestor: Boolean; virtual;
function GetFileSystem: Boolean; virtual;
function GetFileType: WideString; virtual;
function GetFolder: Boolean; virtual;
function GetGhosted: Boolean; virtual;
function GetHasPropSheet: Boolean; virtual;
function GetHasSubFolder: Boolean; virtual;
function GetHidden: Boolean; virtual;
function GetInfoTip: WideString; virtual;
function GetLastAccessTime: WideString; virtual;
function GetLastAccessTimeRaw: TFileTime; virtual;
function GetLastWriteTime: WideString; virtual;
function GetLastWriteTimeRaw: TFileTime; virtual;
function GetLink: Boolean; virtual;
function GetNameAddressbar: WideString; virtual;
function GetNameAddressbarInFolder: WideString; virtual;
function GetNameForEditing: WideString; virtual;
function GetNameForEditingInFolder: WideString; virtual;
function GetNameForParsing: WideString; virtual;
function GetNameForParsingInFolder: WideString; virtual;
function GetNameInFolder: WideString; virtual;
function GetNameNormal: WideString; virtual;
function GetNameParseAddress: WideString; virtual;
function GetNameParseAddressInFolder: WideString; virtual;
function GetNewContent: Boolean; virtual;
function GetNonEnumerated: Boolean; virtual;
function GetNormal: Boolean; virtual;
function GetOffLine: Boolean; virtual;
function GetParentShellFolder: IShellFolder; virtual;
function GetReadOnly: Boolean; virtual;
function GetReadOnlyFile: Boolean; virtual;
function GetRemovable: Boolean; virtual;
function GetSizeOfFile: WideString; virtual;
function GetSizeOfFileDiskUsage: WideString; virtual;
function GetSizeOfFileInt64: Int64; virtual;
function GetSizeOfFileKB: WideString; virtual;
function GetShare: Boolean; virtual;
function GetShortFileName: WideString; virtual;
function GetSubItems: Boolean; virtual;
function GetSystem: Boolean; virtual;
function GetTemporary: Boolean; virtual;
function CreateCategory(GUID: TGUID): ICategorizer;
function ExplorerStyleAttributeStringList(CapitalLetters: Boolean): WideString;
function DisplayNameOf(Flags: Longword): WideString;
procedure GetDataFromIDList;
procedure GetFileTimes;
procedure GetSHFileInfo;
function InjectCustomSubMenu(Menu: HMenu; Caption: string; PopupMenu: TPopupMenu;
var SubMenu: HMenu): TMenuItemIDArray;
function InternalGetContextMenuInterface(PIDLArray: TRelativePIDLArray): IContextMenu;
function InternalGetDataObjectInterface(PIDLArray: TRelativePIDLArray): IDataObject;
function InternalShowContextMenu(Owner: TWinControl; ContextMenuCmdCallback: TContextMenuCmdCallback;
ContextMenuShowCallback: TContextMenuShowCallback; ContextMenuAfterCmdCallback: TContextMenuAfterCmdCallback;
PIDLArray: TRelativePIDLArray; Position: PPoint;
CustomShellSubMenu: TPopupMenu; CustomSubMenuCaption: WideString;
ForceFromDesktop: Boolean): Boolean;
function InternalSubItems(Flags: Longword): Boolean;
function VerifyPIDLRelationship(NamespaceArray: TNamespaceArray): Boolean;
procedure WindowProcForContextMenu(var Message: TMessage);
property CurrentContextMenu2: IContextMenu2 read FCurrentContextMenu2 write FCurrentContextMenu2;
property CurrentContextMenu: IContextMenu read FCurrentContextMenu write FCurrentContextMenu;
property ShellCache: TShellCacheRec read FShellCache write FShellCache;
property SystemIsSuperHidden: Boolean read FSystemIsSuperHidden write FSystemIsSuperHidden;
public
constructor Create(PIDL: PItemIdList; AParent: TNamespace);
destructor Destroy; override;
constructor CreateCustomNamespace(CustomID: Integer; AParent: TNamespace);
constructor CreateFromFileName(FileName: WideString);
function CanCopyAll(NamespaceArray: TNamespaceArray): Boolean;
function CanCutAll(NamespaceArray: TNamespaceArray): boolean;
function CanDeleteAll(NamespaceArray: TNamespaceArray): Boolean;
function CanPasteToAll(NamespaceArray: TNamespaceArray): Boolean;
function CanShowPropertiesOfAll(NamespaceArray: TNamespaceArray): Boolean;
function Clone(ReleasePIDLOnDestroy: Boolean): TNameSpace; virtual;
function ComparePIDL(PIDLToCompare: PItemIDList; IsAbsolutePIDL: Boolean; Column: Integer = 0): ShortInt;
function ContextMenuItemHelp(MenuItemID: LongWord): WideString;
function ContextMenuVerb(MenuItemID: LongWord): WideString;
function Copy(NamespaceArray: TNamespaceArray): Boolean;
function Cut(NamespaceArray: TNamespaceArray): Boolean;
function DataObjectMulti(NamespaceArray: TNamespaceArray): IDataObject;
function Delete(NamespaceArray: TNamespaceArray): Boolean;
function DetailsColumnTitle(ColumnIndex: integer): WideString;
function DetailsColumnTitleInfo(ColumnIndex: Integer): TDetailsColumnTitleInfo;
function DetailsDefaultColumnTitle(ColumnIndex: integer): WideString; virtual;
function DetailsDefaultOf(ColumnIndex: integer): WideString; virtual;
function DetailsDefaultSupportedColumns: integer; virtual;
function DetailsGetDefaultColumnState(ColumnIndex: integer): TSHColumnStates;
function DetailsOf(ColumnIndex: integer): WideString;
function DetailsOfEx(ColumnIndex: integer): WideString;
function DetailsSupportedColumns: integer;
function DetailsSupportedVisibleColumns: TVisibleColumnIndexArray;
function DetailsValidIndex(DetailsIndex: integer): Boolean;
function DragEffect(grfKeyState: integer): HRESULT;
function DragEnter(const dataObj: IDataObject; grfKeyState: Integer;
pt: TPoint; var dwEffect: Integer): HResult;
function DragLeave: HResult;
function DragOver(grfKeyState: Integer; pt: TPoint;
var dwEffect: Integer): HResult;
function Drop(const dataObj: IDataObject; grfKeyState: Integer;
pt: TPoint; var dwEffect: Integer): HResult;
function EnumerateFolder(Folders, NonFolders, IncludeHidden: Boolean;
EnumFunc: TEnumFolderCallback; UserData: pointer): integer;
{$IFDEF VIRTUALNAMESPACES}
function EnumerateFolderHook(Folders, NonFolders, IncludeHidden: Boolean;
EnumFunc: TEnumFolderCallback; UserData: pointer): Integer;
{$ENDIF}
function ExecuteContextMenuVerb(AVerb: WideString; APIDLArray: TRelativePIDLArray; MessageWindowParent: HWnd = 0): Boolean;
function FolderSize(Invalidate: Boolean; RecurseFolder: Boolean = False): Int64;
function GetIconIndex(OpenIcon: Boolean; IconSize: TIconSize; ForceLoad: Boolean = True): integer; virtual;
function GetImage: TBitmap;
procedure HandleContextMenuMsg(Msg, wParam, lParam: Longint; var Result: LRESULT);
procedure InvalidateCache;
procedure InvalidateNamespace(RefreshIcon: Boolean = True);
procedure InvalidateRelativePIDL(Folders, NonFolders, IncludeHidden: Boolean);
procedure InvalidateThumbImage;
function IsChildByNamespace(TestNamespace: TNamespace; Immediate: Boolean): Boolean;
function IsChildByPIDL(TestPIDL: PItemIDList; Immediate: Boolean): Boolean;
function IsChildOfRemovableDrive: Boolean;
function IsControlPanel: Boolean;
function IsControlPanelChildFolder: Boolean;
function IsDesktop: Boolean;
function IsMyComputer: Boolean;
function IsNetworkNeighborhood: Boolean;
function IsNetworkNeighborhoodChild: Boolean;
function IsParentByNamespace(TestNamespace: TNamespace; Immediate: Boolean): Boolean;
function IsParentByPIDL(TestPIDL: PItemIDList; Immediate: Boolean): Boolean;
function IsRecycleBin: Boolean;
function ParseDisplayName: PItemIDList; overload;
function ParseDisplayName(Path: WideString): PItemIDList; overload;
function Paste(NamespaceArray: TNamespaceArray): Boolean;
procedure SetIconIndexByThread(IconIndex: Integer; ClearThreadLoading: Boolean);
procedure SetImageByThread(Bitmap: TBitmap; ClearThreadLoading: Boolean);
function SetNameOf(NewName: WideString): Boolean;
function ShellExecuteNamespace(WorkingDir, CmdLineArguments: WideString; ExecuteFolder: Boolean = False;
ExecuteFolderShortCut: Boolean = False): Boolean;
function ShowContextMenu(Owner: TWinControl;
ContextMenuCmdCallback: TContextMenuCmdCallback; ContextMenuShowCallback: TContextMenuShowCallback;
ContextMenuAfterCmdCallback: TContextMenuAfterCmdCallback; Position: PPoint = nil;
CustomShellSubMenu: TPopupMenu = nil; CustomSubMenuCaption: WideString = ''): Boolean;
function ShowContextMenuMulti(Owner: TWinControl; ContextMenuCmdCallback: TContextMenuCmdCallback;
ContextMenuShowCallback: TContextMenuShowCallback; ContextMenuAfterCmdCallback: TContextMenuAfterCmdCallback;
NamespaceArray: TNamespaceArray; Position: PPoint = nil; CustomShellSubMenu: TPopupMenu = nil;
CustomSubMenuCaption: WideString = ''; ForceFromDesktop: Boolean = False): Boolean;
procedure ShowPropertySheet;
procedure ShowPropertySheetMulti(NamespaceArray: TNamespaceArray);
function SubFoldersEx(Flags: Longword): Boolean;
function SubItemsEx(Flags: Longword): Boolean;
function TestAttributesOf(Flags: Longword; FlushCache: Boolean; SoftFlush: Boolean = False): Boolean;
property AbsolutePIDL: PItemIDList read FAbsolutePIDL;
property AdvDetailsSupported: Boolean read GetDetailsSupported;
property Browsable: Boolean read GetBrowsable;
property BrowserFrameOptionsInterface: IBrowserFrameOptions read GetBrowserFrameOptionsInterface;
property CanCopy: Boolean read GetCanCopy;
property CanDelete: Boolean read GetCanDelete;
property CanLink: Boolean read GetCanLink;
property CanMoniker: Boolean read GetCanMoniker;
property CanMove: Boolean read GetCanMove;
property CanRename: Boolean read GetCanRename;
property CategoryProviderInterface: ICategoryProvider read GetCategoryProviderInterface;
property CategoryAlphabetical: ICategorizer read GetCategoryAlphabetical;
property CategoryDriveSize: ICategorizer read GetCategoryDriveSize;
property CategoryDriveType: ICategorizer read GetCategoryDriveType;
property CategoryFreeSpace: ICategorizer read GetCategoryFreeSpace;
property CategorySize: ICategorizer read GetCategorySize;
property CategoryTime: ICategorizer read GetCategoryTime;
property CLSID: TGUID read GetCLSID;
property ContextMenuInterface: IContextMenu read GetContextMenuInterface;
property ContextMenu2Interface: IContextMenu2 read GetContextMenu2Interface;
property ContextMenu3Interface: IContextMenu3 read GetContextMenu3Interface;
property DataObjectInterface: IDataObject read GetDataObjectInterface;
property Description: TObjectDescription read GetDescription;
property DropTarget: Boolean read GetDropTarget;
property DropTargetInterface: IDropTarget read GetDropTargetInterface;
property Encrypted: Boolean read GetEncrypted;
property ExtractImage: TExtractImage read GetExtractImage;
property ExtractIconAInterface: IExtractIconA read GetExtractIconAInterface;
property ExtractIconWInterface: IExtractIconW read GetExtractIconWInterface;
property FileSystem: Boolean read GetFileSystem;
property FileSysAncestor: Boolean read GetFileSysAncestor;
property Folder: Boolean read GetFolder;
property FreePIDLOnDestroy: Boolean read GetFreePIDLOnDestroy write SetFreePIDLOnDestroy;
property Ghosted: Boolean read GetGhosted;
property HasPropSheet: Boolean read GetHasPropSheet;
property HasStorage: Boolean read GetHasStorage;
property HasSubFolder: Boolean read GetHasSubFolder;
property IconIndexChanged: Boolean read GetIconIndexChanged write SetIconIndexChanged;
property IsSlow: Boolean read GetIsSlow;
{$IFDEF VIRTUALNAMESPACES}
property IsVirtualNamespace: Boolean read GetIsVirtualNamespace;
property IsRootVirtualNamespace: Boolean read GetIsRootVirtualNamespace;
property IsHardHookedNamespace: Boolean read GetIsHardHookedNamespace;
property IsHookedNamespace: Boolean read GetIsHookedNamespace;
property IsVirtualHook: Boolean read GetIsVirtualHook;
{$ENDIF}
property Link: Boolean read GetLink;
property InfoTip: WideString read GetInfoTip;
property NameAddressbar: WideString read GetNameAddressbar;
property NameAddressbarInFolder: WideString read GetNameAddressbarInFolder;
property NameForEditing: WideString read GetNameForEditing;
property NameForEditingInFolder: WideString read GetNameForEditingInFolder;
property NameForParsing: WideString read GetNameForParsing;
property NameForParsingInFolder: WideString read GetNameForParsingInFolder;
property NameInFolder: WideString read GetNameInFolder;
property NameNormal: WideString read GetNameNormal;
property NameParseAddress: WideString read GetNameParseAddress;
property NameParseAddressInFolder: WideString read GetNameParseAddressInFolder;
property NamespaceID: integer read FNamespaceID;
property NewContent: Boolean read GetNewContent;
property NonEnumerated: Boolean read GetNonEnumerated;
property Parent: TNamespace read FParent;
property ParentShellFolder: IShellFolder read GetParentShellFolder;
property ParentShellFolder2: IShellFolder2 read GetParentShellFolder2;
property ParentShellDetailsInterface: {$IFNDEF CPPB_6_UP}IShellDetails{$ELSE}IShellDetailsBCB6{$ENDIF} read GetParentShellDetailsInterface;
property QueryAssociationsInterface: IQueryAssociations read GetQueryAssociationsInterface;
property ReadOnly: Boolean read GetReadOnly;
property RelativePIDL: PItemIDList read FRelativePIDL; // Single Item ID of this namespace
property Removable: Boolean read GetRemovable;
property Share: Boolean read GetShare;
property ShellFolder: IShellFolder read GetShellFolder;
property ShellFolder2: IShellFolder2 read GetShellFolder2;
property ShellDetailsInterface: {$IFNDEF CPPB_6_UP}IShellDetails{$ELSE}IShellDetailsBCB6{$ENDIF} read GetShellDetailsInterface;
property ShellLink: TVirtualShellLink read GetShellLink;
property ShellIconInterface: IShellIcon read GetShellIconInterface;
property ShellIconOverlayInterface: IShellIconOverlay read GetShellIconOverlayInterface;
property ShortFileName: WideString read GetShortFileName;
property States: TNamespaceStates read FStates write FStates;
property Storage: Boolean read GetStorage;
property StorageAncestor: Boolean read GetStorageAncestor;
property Stream: Boolean read GetStream;
property SubFolders: Boolean read GetSubFolders;
property SubItems: Boolean read GetSubItems;
property Tag: integer read FTag write FTag;
property ThreadedIconLoaded: Boolean read GetThreadedIconLoaded;
property ThreadIconLoading: Boolean read GetThreadIconLoading write SetThreadIconLoading;
property ThreadImageLoaded: Boolean read GetThreadedImageLoaded;
property ThreadImageLoading: Boolean read GetThreadedImageLoading write SetThreadImageLoading;
property QueryInfoInterface: IQueryInfo read GetQueryInfoInterface;
property Win32FindDataA: PWin32FindDataA read FWin32FindDataA;
property Win32FindDataW: PWin32FindDataW read FWin32FindDataW;
{ Information on namespaces that are actual files. }
property AttributesString: WideString read GetAttributesString; // Explorer type 'RHSA'
property Archive: Boolean read GetArchive;
property Compressed: Boolean read GetCompressed;
property CreationTime: WideString read GetCreationTime;
property CreationDateTime: TDateTime read GetCreationDateTime;
property CreationTimeRaw: TFileTime read GetCreationTimeRaw;
property Directory: Boolean read GetDirectory;
property Extension: WideString read GetExtension;
property FileName: WideString read GetFileName;
property FileType: WideString read GetFileType;
property Hidden: Boolean read GetHidden;
property LastAccessTime: WideString read GetLastAccessTime;
property LastAccessDateTime: TDateTime read GetLastAccessDateTime;
property LastAccessTimeRaw: TFileTime read GetLastAccessTimeRaw;
property LastWriteTime: WideString read GetLastWriteTime;
property LastWriteDateTime: TDateTime read GetLastWriteDateTime;
property LastWriteTimeRaw: TFileTime read GetLastWriteTimeRaw;
property Normal: Boolean read GetNormal;
property OffLine: Boolean read GetOffLine;
property OverlayIndex: Integer read GetOverlayIndex;
property OverlayIconIndex: Integer read GetOverlayIconIndex;
property ReadOnlyFile: Boolean read GetReadOnlyFile;
property SizeOfFile: WideString read GetSizeOfFile;
property SizeOfFileInt64: Int64 read GetSizeOfFileInt64;
property SizeOfFileKB: WideString read GetSizeOfFileKB;
property SizeOfFileDiskUsage: WideString read GetSizeOfFileDiskUsage;
property SystemFile: Boolean read GetSystem;
property Temporary: Boolean read GetTemporary;
end;
{-------------------------------------------------------------------------------}
{-------------------------------------------------------------------------------}
{ Exported Functions }
{-------------------------------------------------------------------------------}
// Rectange Functions
function RectWidth(ARect: TRect): integer;
function RectHeight(ARect: TRect): integer;
// PIDL Functions
function NamespaceToAbsolutePIDLArray(Namespaces: TNamespaceArray): TAbsolutePIDLArray;
function NamespaceToRelativePIDLArray(Namespaces: TNamespaceArray): TRelativePIDLArray;
function PathToPIDL(APath: WideString): PItemIDList;
function PIDLToPath(APIDL: PItemIDList): WideString;
// Time Conversions
//** NOTE these are not WideString functions they will use ANSI strings internally
function ConvertLocalStrToTFileTime(LocalStr: WideString; var FileTime: TFileTime): Boolean;
function ConvertTFileTimeToLocalStr(AFileTime: TFILETIME): WideString;
function ConvertFileTimetoDateTime(AFileTime : TFileTime): TDateTime;
// Various Functions
function CreateSpecialNamespace(FolderID: integer): TNamespace;
function DefaultSystemImageIndex(FolderType: TDefaultFolderIcon): integer;
function FileIconInit(FullInit: BOOL): BOOL; stdcall;
// IShellLink (ShortCut) helpers
function CreateShellLink(
ALnkFilePath,
ATargetFilePath: WideString;
AnArguments: WideString = '';
AWorkingDir: WideString = '';
ADescription: WideString = '';
AShowCmd: TCmdShow = swShowNormal;
AHotKey: Word = 0;
AHotKeyModifier: THotKeyModifiers = [];
AnIconLocation: WideString = '';
AnIconIndex: integer = 0
): Boolean;
function HotKeyModifiersToStr(HotKeyMod: THotKeyModifiers): WideString;
{$ifdef COMPILER_4}
procedure FreeAndNil(var Obj);
function Supports(const Instance: IUnknown; const Intf: TGUID; out Inst): Boolean;
{$endif}
var
{ A few global common Namespaces to be used for various purposes. }
PIDLMgr: TPIDLManager;
DesktopFolder,
RecycleBinFolder,
PhysicalDesktopFolder,
DrivesFolder,
HistoryFolder,
PrinterFolder,
ControlPanelFolder,
NetworkNeighborHoodFolder,
TemplatesFolder,
MyDocumentsFolder,
FavoritesFolder: TNamespace;
SHLimitInputEdit: TSHLimitInputEdit;
AnimateWindow: function(Wnd: HWND; dwTime: Cardinal; dwFlags: Cardinal): WordBool; stdcall;
implementation
uses
VirtualWideStrings;
type
TShellILIsParent = function(PIDL1: PItemIDList; PIDL2: PItemIDList;
ImmediateParent: LongBool): LongBool; stdcall;
TShellILIsEqual = function(PIDL1: PItemIDList; PIDL2: PItemIDList): LongBool; stdcall;
var
ShellILIsParent: TShellILIsParent;
ShellILIsEqual: TShellILIsEqual;
////////////////////////////////////////////////////////////////////////////////
// Global Functions
////////////////////////////////////////////////////////////////////////////////
// PIDL Functions
{ ----------------------------------------------------------------------------- }
function NamespaceToRelativePIDLArray(Namespaces: TNamespaceArray): TRelativePIDLArray;
var
i: integer;
begin
Result := nil;
if Assigned(Namespaces) then
begin
SetLength(Result, Length(Namespaces));
for i := 0 to Length(Namespaces) - 1 do
Result[i] := Namespaces[i].RelativePIDL;
end
end;
function NamespaceToAbsolutePIDLArray(Namespaces: TNamespaceArray): TAbsolutePIDLArray;
var
i: integer;
begin
Result := nil;
if Assigned(Namespaces) then
begin
SetLength(Result, Length(Namespaces));
for i := 0 to Length(Namespaces) - 1 do
Result[i] := Namespaces[i].AbsolutePIDL;
end
end;
{ ----------------------------------------------------------------------------- }
function PathToPIDL(APath: WideString): PItemIDList;
// Takes the passed Path and attempts to convert it to the equavalent PIDL
var
Desktop: IShellFolder;
pchEaten, dwAttributes: ULONG;
begin
Result := nil;
begin
SHGetDesktopFolder(Desktop);
dwAttributes := 0;
if Assigned(Desktop) then
Desktop.ParseDisplayName(0, nil, PWideChar(APath), pchEaten, Result, dwAttributes)
end
end;
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
function PIDLToPath(APIDL: PItemIDList): WideString;
var
Folder: TNamespace;
begin
Result := '';
Folder := TNamespace.Create(APIDL, nil);
try
Folder.FreePIDLOnDestroy := False;
if Assigned(Folder) then
Result := Folder.NameForParsing;
finally
Folder.Free
end
end;
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
function RectWidth(ARect: TRect): integer;
begin
Result := ARect.Right - ARect.Left
end;
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
function RectHeight(ARect: TRect): integer;
begin
Result := ARect.Bottom - ARect.Top
end;
{ ----------------------------------------------------------------------------- }
// Time Conversions
{ ----------------------------------------------------------------------------- }
// ANSI
function ConvertLocalStrToTFileTime(LocalStr: WideString;
var FileTime: TFileTime): Boolean;
var
SystemTime: TSystemTime;
begin
Result := True;
try
DateTimeToSystemTime(StrToDateTime(LocalStr), SystemTime)
except
on EConvertError do Result := False;
end;
if Result then
Result := SystemTimeToFileTime(SystemTime, FileTime);
end;
{ ----------------------------------------------------------------------------- }
function ValidFileTime(FileTime: TFileTime): Boolean;
begin
Result := (FileTime.dwLowDateTime <> 0) or (FileTime.dwHighDateTime <> 0);
end;
{ ----------------------------------------------------------------------------- }
// Converts a TFileTime structure into a local Time/Date String. This requires
// a check to make sure the TFileTime structure contains some info through
// the local function ValidFileTime then trying to convert the UTC time to Local
// UTC time. Then finally changing the UTC time to System time.
// ANSI/
function ConvertTFileTimeToLocalStr(AFileTime: TFILETIME): WideString;
var
SysTime: TSystemTime;
LocalFileTime: TFILETIME;
begin
if ValidFileTime(AFileTime)
and FileTimeToLocalFileTime(AFileTime, LocalFileTime)
and FileTimeToSystemTime(LocalFileTime, SysTime) then
try
Result := DateTimeToStr(SystemTimeToDateTime(SysTime))
except
Result := '';
end
else
Result := '';
end;
{ ----------------------------------------------------------------------------- }
function ConvertFileTimetoDateTime(AFileTime : TFileTime): TDateTime;
var
SysTime: TSystemTime;
LocalFileTime: TFILETIME;
begin
if ValidFileTime(AFileTime)
and FileTimeToLocalFileTime(AFileTime, LocalFileTime)
and FileTimeToSystemTime(LocalFileTime, SysTime) then
try
Result := (SystemTimeToDateTime(SysTime))
except
Result := 0;
end
else
Result := 0;
end;
// Various Functions
{ ----------------------------------------------------------------------------- }
function CreateSpecialNamespace(FolderID: integer): TNamespace;
{ Creates a TNamespace based on the SpecialFolders defined by }
{ SHGetSpecialFolderLocation. }
var
PIDL: PItemIDList;
F: IShellFolder;
begin
SHGetspecialFolderLocation(0, FolderID, PIDL);
if Assigned(PIDL) then
begin
Result := TNamespace.Create(PIDL, nil);
F := Result.ParentShellFolder // just force the namespace to have Parent
end else
Result := nil
end;
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
function DefaultSystemImageIndex(FolderType: TDefaultFolderIcon): integer;
{ Extracts the default Icon for the given folder type passed to it. }
var
FileInfoA: TSHFileInfo;
FileInfoW: TSHFileInfoW;
FileExampleW: WideString;
FileExampleA: string;
Attrib, Flags: DWORD;
PIDL: PItemIDList;
NS: TNamespace;
begin
Result := -1;
Attrib := 0;
Flags := 0;
case FolderType of
diNormalFolder:
begin
FileExampleW := '*.*';
Attrib := FILE_ATTRIBUTE_DIRECTORY;
Flags := SHGFI_USEFILEATTRIBUTES or SHGFI_SHELLICONSIZE or SHGFI_SYSICONINDEX
end;
diOpenFolder:
begin
FileExampleW := '*.*';
Attrib := FILE_ATTRIBUTE_DIRECTORY;
Flags := SHGFI_USEFILEATTRIBUTES or SHGFI_SHELLICONSIZE or SHGFI_SYSICONINDEX or SHGFI_OPENICON
end;
diUnknownFile:
begin
FileExampleW := '*.zyxwv';
Attrib := FILE_ATTRIBUTE_NORMAL;
Flags := SHGFI_USEFILEATTRIBUTES or SHGFI_SHELLICONSIZE or SHGFI_SYSICONINDEX
end;
diLink:
begin
FileExampleW := '';
Result := SHORTCUT_ICON_INDEX;
end;
diMyDocuments:
begin
if Assigned(DesktopFolder) then
begin
PIDL := DesktopFolder.ParseDisplayName('::{450d8fba-ad25-11d0-98a8-0800361b1103}');
if Assigned(PIDL) then
begin
NS := TNamespace.Create(PIDL, nil);
Result := NS.GetIconIndex(False, icSmall, True);
NS.Free
end
end else
Result := DefaultSystemImageIndex(diNormalFolder)
end
else
FileExampleW := ''
end;
if FileExampleW <> '' then
begin
if IsUnicode then
begin
FillChar(FileInfoW, SizeOf(FileInfoW), #0);
SHGetFileInfoW_VST(PWideChar(FileExampleW), Attrib, FileInfoW, SizeOf(TSHFileInfoW), Flags);
Result := FileInfoW.iIcon;
end else
begin
FileExampleA := FileExampleW;
FillChar(FileInfoA, SizeOf(FileInfoA), #0);
SHGetFileInfoA(PChar(FileExampleA), Attrib, FileInfoA, SizeOf(TSHFileInfoA), Flags);
Result := FileInfoA.iIcon;
end
end
end;
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
// Forces the correct icons for the Common Program Groups on Windows NT 4.0.
// Borrowed from John T and GXExplorer <g>
function FileIconInit(FullInit: BOOL): BOOL; stdcall;
type
TFileIconInit = function(FullInit: BOOL): BOOL; stdcall;
var
ShellDLL: HMODULE;
PFileIconInit: TFileIconInit;
begin
Result := False;
if (Win32Platform = VER_PLATFORM_WIN32_NT) then
begin
ShellDLL := GetModuleHandle(PChar(Shell32));
// ShellDLL := LoadLibrary(PChar(Shell32));
PFileIconInit := GetProcAddress(ShellDLL, PChar(660));
if (Assigned(PFileIconInit)) then
Result := PFileIconInit(FullInit);
end;
end;
{ ----------------------------------------------------------------------------- }
// IShellLink (ShortCut) helpers
{ ----------------------------------------------------------------------------- }
function CreateShellLink(ALnkFilePath, ATargetFilePath: WideString; AnArguments: WideString = '';
AWorkingDir: WideString = ''; ADescription: WideString = ''; AShowCmd: TCmdShow = swShowNormal;
AHotKey: Word = 0; AHotKeyModifier: THotKeyModifiers = []; AnIconLocation: WideString = '';
AnIconIndex: integer = 0): Boolean;
var
ShellLink: TVirtualShellLink;
begin
Result := True;
ShellLink := TVirtualShellLink.Create(nil);
if Assigned(ShellLink) then
try
try
ShellLink.FileName := ALnkFilePath;
ShellLink.TargetPath := ATargetFilePath;
if AnArguments <> '' then
ShellLink.Arguments := AnArguments;
if AWorkingDir <> '' then
ShellLink.WorkingDirectory := AWorkingDir;
if ADescription <> '' then
ShellLink.Description := ADescription;
if AShowCmd <> swShowNormal then
ShellLink.ShowCmd := AShowCmd;
if (AHotKey <> 0) then
ShellLink.HotKey := AHotKey;
if AHotKeyModifier <> [] then
ShellLink.HotKeyModifiers := AHotKeyModifier;
if AnIconLocation <> '' then
ShellLink.IconLocation := AnIconLocation;
if AnIconIndex <> 0 then
ShellLink.IconIndex := AnIconIndex;
ShellLink.WriteLink(ShellLink.FileName);
except
Result := False;
raise;
end
finally
ShellLink.Free
end
end;
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
function HotKeyModifiersToStr(HotKeyMod: THotKeyModifiers): WideString;
begin
Result := '';
if hkmAlt in HotKeyMod then
Result := Result + ' Alt';
if hkmControl in HotKeyMod then
Result := Result + ' Control';
if hkmExtendedKey in HotKeyMod then
Result := Result + ' ExtendedKey';
if hkmShift in HotKeyMod then
Result := Result + ' Shift';
end;
{ ----------------------------------------------------------------------------- }
{ Some Stuff D4 lacks.
}
{$ifdef COMPILER_4}
{ ----------------------------------------------------------------------------- }
procedure FreeAndNil(var Obj);
var
P: TObject;
begin
P := TObject(Obj);
TObject(Obj) := nil;
P.Free;
end;
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
function Supports(const Instance: IUnknown; const Intf: TGUID; out Inst): Boolean;
begin
Result := (Instance <> nil) and (Instance.QueryInterface(Intf, Inst) = 0);
end;
{ ----------------------------------------------------------------------------- }
{$endif}
////////////////////////////////////////////////////////////////////////////////
// Local Functions
////////////////////////////////////////////////////////////////////////////////
{ ----------------------------------------------------------------------------- }
function RequestedDragEffect(grfKeyState: integer): HResult;
{ Looks at the KeyState during a IDragTarget notification. The return value}
{ is the expected behavior common in Windows. Note this does not mean that }
{ the DragSource is actually capable of this action. }
begin
// Strip off the mouse button information keep only Ctrl and Shift information
grfKeyState := grfKeyState and (MK_CONTROL or MK_SHIFT);
// Standard Windows Shell behavior
if grfKeyState = 0 then Result := DROPEFFECT_MOVE // Windows default
else
if grfKeyState = MK_CONTROL then Result := DROPEFFECT_COPY
else
if grfKeyState = (MK_CONTROL or MK_SHIFT) then Result := DROPEFFECT_LINK
else
Result := DROPEFFECT_NONE;
end;
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
{ Thank you Angus Johnson for this article in UNDO }
{-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-}
//Structures used in GetDiskFreeSpaceFAT32
{-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-}
type
//DeviceIoControl registers structure...
TDevIoCtl_Registers = packed record
Reg_EBX : DWord;
Reg_EDX : DWord;
Reg_ECX : DWord;
Reg_EAX : DWord;
Reg_EDI : DWord;
Reg_ESI : DWord;
Reg_Flags : DWord;
end;
//Structure passed in Get_ExtFreeSpace ...
TExtGetDskFreSpcStruc = packed record
ExtFree_Size : Word;
ExtFree_Level : Word;
ExtFree_SectorsPerCluster : Integer;
ExtFree_BytesPerSector : Integer;
ExtFree_AvailableClusters : Integer;
ExtFree_TotalClusters : Integer;
ExtFree_AvailablePhysSectors : Integer;
ExtFree_TotalPhysSectors : Integer;
ExtFree_AvailableAllocationUnits : Integer;
ExtFree_TotalAllocationUnits : Integer;
ExtFree_Rsvd : array [0..1] of Integer;
end;
{-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-}
//Angus Johnson's Delphi implimentation of - Int 21h Function 7303h Get_ExtFreeSpace (FAT32)
{-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-}
function GetDiskFreeSpaceFAT32(Drive: PChar; var SectorsperCluster,
BytesperSector, FreeClusters, TotalClusters: DWORD): boolean;
const
VWIN32_DIOC_DOS_IOCTL = 6;
var
DevIoHandle : THandle;
BytesReturned : DWord;
Reg : TDevIoCtl_Registers;
ExtGetDskFreSpcStruc: TExtGetDskFreSpcStruc;
begin
result := false;
FillChar(ExtGetDskFreSpcStruc, sizeof(TExtGetDskFreSpcStruc),0);
FillChar(Reg, sizeof(TDevIoCtl_Registers),0);
with Reg do begin
reg_EAX := $7303;
reg_EDX := DWord(Drive); //DS:DX
Reg_EDI := DWord(@ExtGetDskFreSpcStruc); //ES:DI
reg_ECX := sizeof(TExtGetDskFreSpcStruc);
reg_Flags := 1; //set carry flag to assume error.
end;
if IsUnicode then
DevIoHandle := CreateFileW_VST( '\\.\vwin32', Generic_Read,
File_Share_Read or File_Share_Write, nil, Open_Existing, File_Attribute_Normal, 0)
else
DevIoHandle := CreateFile( '\\.\vwin32', Generic_Read,
File_Share_Read or File_Share_Write, nil, Open_Existing, File_Attribute_Normal, 0);
if DevIoHandle <> Invalid_Handle_Value then begin
result := DeviceIoControl(DevIoHandle, VWIN32_DIOC_DOS_IOCTL,
@Reg, SizeOf(Reg), @Reg, SizeOf(Reg), BytesReturned, nil);
CloseHandle(DevIoHandle);
if not result then
begin
exit //error
end
else if (Reg.reg_Flags and 1 <> 0) then begin
result := false; //If carry flag not cleared then => error
exit;
end
else with ExtGetDskFreSpcStruc do begin
BytesperSector := ExtFree_BytesPerSector;
SectorsperCluster := ExtFree_SectorsPerCluster;
TotalClusters := ExtFree_TotalClusters;
FreeClusters := ExtFree_AvailableClusters;
result := true;
end;
end;
end; {GetDiskFreeSpaceFAT32}
{ ----------------------------------------------------------------------------- }
{ ----------------------------------------------------------------------------- }
function LoadShell32Functions: Boolean;
var
ShellDLL: HMODULE;
begin
{ Don't see a point in making this all WideString compatible }
ShellDLL := GetModuleHandle(PChar(Shell32));
// ShellDLL := LoadLibrary(PChar(Shell32));
if ShellDll <> 0 then
begin
AnimateWindow := GetProcAddress(GetModuleHandle('user32'), 'AnimateWindow');
ShellILIsEqual := GetProcAddress(ShellDLL, PChar(21));
ShellILIsParent := GetProcAddress(ShellDLL, PChar(23));
SHLimitInputEdit := GetProcAddress(ShellDLL, PChar(747));
Result := Assigned(ShellILIsEqual) and Assigned(ShellILIsParent)
end else
Result := False;
end;
{ ----------------------------------------------------------------------------- }
{ TNamespace }
function TNamespace.CanCopyAll(NamespaceArray: TNamespaceArray): Boolean;
var
i: integer;
begin
if Assigned(NamespaceArray) then
begin
Result := True;
i := 0;
while Result and (i < Length(NamespaceArray)) do
begin
Result := NamespaceArray[i].CanCopy;
Inc(i)
end
end else
Result := False
end;
function TNamespace.CanCutAll(NamespaceArray: TNamespaceArray): boolean;
begin
Result := CanDeleteAll(NamespaceArray)
end;
function TNamespace.CanDeleteAll(NamespaceArray: TNamespaceArray): Boolean;
var
i: integer;
begin
if Assigned(NamespaceArray) then
begin
Result := True;
i := 0;
while Result and (i < Length(NamespaceArray)) do
begin
Result := NamespaceArray[i].CanDelete;
Inc(i)
end
end else
Result := False
end;
function TNamespace.CanPasteToAll(NamespaceArray: TNamespaceArray): Boolean;
begin
Result := False;
if Assigned(NamespaceArray) then
if Length(NamespaceArray) > 0 then
Result := True // Can try to paste to anything?
end;
function TNamespace.CanShowPropertiesOfAll(NamespaceArray: TNamespaceArray): Boolean;
var
i: integer;
begin
if Assigned(NamespaceArray) then
begin
Result := True;
i := 0;
while Result and (i < Length(NamespaceArray)) do
begin
Result := NamespaceArray[i].HasPropSheet;
Inc(i)
end
end else
Result := False
end;
function TNamespace.Clone(ReleasePIDLOnDestroy: Boolean): TNameSpace;
begin
// This is not really a true clone since we don't copy the parent, but it is
// dangerous to do that. Be careful using this function since things can
// potentially change in the shell.
Result := TNamespace.Create(PIDLMgr.CopyPIDL(AbsolutePIDL), nil);
Result.FreePIDLOnDestroy := ReleasePIDLOnDestroy;
end;
function TNamespace.ComparePIDL(PIDLToCompare: PItemIDList;
IsAbsolutePIDL: Boolean; Column: Integer = 0): ShortInt;
// Encapsulation of the CompareID Function of IShellFolder
// Returns > 0 if PIDLToCompare > RelativePIDL
// 0 if PIDLToCompare = RelativePIDL
// < 0 if PIDLToCompare < RelativePIDL
var
PIDL: PItemIDList;
{$IFDEF VIRTUALNAMESPACES}
PIDL1Virtual, PIDL2Virtual: Boolean;
TempNS: TNamespace;
TempPIDL: PItemIdList;
{$ENDIF}
begin
if Assigned(PIDLToCompare) then
begin
if Column < 0 then
Column := 0;
PIDL := PIDLMgr.GetPointerToLastID(PIDLToCompare);
if Assigned(ParentShellFolder) then
begin
{$IFDEF VIRTUALNAMESPACES}
// First check to see if the PIDLs are one of our own. It is possible that
// VET may try to compare Virtual with Real PIDL
PIDL1Virtual := NamespaceExtensionFactory.IsVirtualPIDL(PIDL);
PIDL2Virtual := NamespaceExtensionFactory.IsVirtualPIDL(RelativePIDL);
if (PIDL1Virtual and PIDL2Virtual) or (not PIDL1Virtual and (not PIDL2Virtual)) then
Result := ShortInt(ParentShellFolder.CompareIDs(Column, PIDL, RelativePIDL))
else begin
if Assigned(Parent) then
begin
// If here one is virtual and one is not
TempPIDL := PIDLMgr.GetPointerToLastID(PIDLToCompare);
TempNS := TNamespace.Create(PIDLMgr.AppendPIDL(Parent.AbsolutePIDL, TempPIDL), nil);
if TempNS.Folder and not Folder then
Result := -1
else
if Folder and not TempNS.Folder
then
Result := 1
else begin
if PIDL1Virtual then
Result := 1
else
Result := -1;
end;
TempNS.Free;
end else
Result := -1;
end;
{$ELSE}
Result := ShortInt(ParentShellFolder.CompareIDs(Column, PIDL, RelativePIDL))
{$ENDIF}
end else
Result := 0
end else
Result := -1 // If the pidl is not assigned then we clearly are greater!
end;
function TNamespace.ContextMenuItemHelp(MenuItemID: LongWord): WideString;
const
BufferLen = 128;
var
S: string;
Found: Boolean;
P: Pointer;
begin
Found := False;
if Assigned(CurrentContextMenu) and (MenuItemID <> $FFFFFFFF) and (MenuItemID > 0)then
begin
if IsUnicode then
begin
SetLength(Result, BufferLen);
{ Keep D6 from complaining about suspicious PChar cast }
P := @Result[1];
Found := CurrentContextMenu.GetCommandString(MenuItemID-1, GCS_HELPTEXTW, nil, PChar(P),
BufferLen) = NOERROR
end;
if not Found then
begin
SetLength(S, BufferLen);
if CurrentContextMenu.GetCommandString(MenuItemID-1, GCS_HELPTEXTA, nil, PChar(S),
BufferLen) <> NOERROR
then
Result := ''
else begin
SetLength(S, StrLen( PChar(S)));
Result := S
end
end else
SetLength(Result, lstrlenW(PWideChar( Result)))
end;
end;
function TNamespace.ContextMenuVerb(MenuItemID: Longword): WideString;
{ Returns the cononical (or not) verb that is equal to the MenuItemID, which is }
{ the HMenu identifer for a menu item. }
const
BufferLen = 128;
var
S: string;
Found: Boolean;
P: Pointer;
begin
Found := False;
if Assigned(CurrentContextMenu) and (MenuItemID <> $FFFFFFFF) and (MenuItemID > 0) then
begin
if IsUnicode then
begin
SetLength(Result, BufferLen);
{ Keep D6 from complaining about suspicious PChar cast }
P := @Result[1];
Found := CurrentContextMenu.GetCommandString(MenuItemID-1, GCS_VERBW, nil, PChar(P),
BufferLen) = NOERROR
end;
if not Found then
begin
SetLength(S, BufferLen);
if CurrentContextMenu.GetCommandString(MenuItemID-1, GCS_VERBA, nil, PChar(S),
BufferLen) <> NOERROR
then
Result := ''
else begin
SetLength(S, StrLen( PChar(S)));
Result := S
end
end else
SetLength(Result, lstrlenW(PWideChar( Result)))
end;
end;
function TNamespace.Copy(NamespaceArray: TNamespaceArray): Boolean;
begin
Result := False;
if VerifyPIDLRelationship(NamespaceArray) then
Result := ExecuteContextMenuVerb('copy', NamespaceToRelativePIDLArray(NamespaceArray))
end;
constructor TNamespace.Create(PIDL: PItemIdList; AParent: TNamespace);
{ Pass the PIDL of a Namespace Object Folder to create along with its parent }
{ to create a new TNamespace. }
begin
inherited Create;
FParent := AParent;
FShellCache.Data.SmallIcon := -1;
FShellCache.Data.SmallOpenIcon := -1;
FShellCache.Data.OverlayIndex := -1;
FShellCache.Data.OverlayIconIndex := -1;
Include(FStates, nsShellDetailsSupported); // Be optomistic
Include(FStates, nsShellFolder2Supported); // Be optomistic
Include(FStates, nsShellOverlaySupported); // Be optomistic
FreePIDLOnDestroy := True;
FNamespaceID := SHELL_NAMESPACE_ID;
{ It is the Root Folder since it has no parent }
if not Assigned(AParent) then
begin
{ Either a nil for PID or if the PID is the Desktop PIDL means a full tree }
if not Assigned(PIDL) or PIDLMgr.IsDesktopFolder(PIDL) then
begin
{ If PID is already assigned then use it }
if not Assigned(PIDL) then
SHGetSpecialFolderLocation(Application.Handle, CSIDL_DESKTOP, FRelativePIDL)
else
FRelativePIDL := PIDL;
FAbsolutePIDL := FRelativePIDL;
end else
{ The PIDL is the Root PIDL but is NOT the Desktop namespace it is a }
{ FULLY QUALIFIED PIDL to a namespace that is to be the Root. }
begin
FAbsolutePIDL := PIDL;
FRelativePIDL := PIDLMgr.GetPointerToLastID(FAbsolutePIDL);
end;
end else
{ If the folder is a child of the desktop special conditions apply see above }
if PIDLMgr.IsDesktopFolder(AParent.AbsolutePIDL) then
begin
FRelativePIDL := PIDL;
FAbsolutePIDL := PIDL;
end else
{ Normal building of the PIDLs and Shells }
begin
FAbsolutePIDL := PIDLMgr.AppendPIDL(AParent.FAbsolutePIDL, PIDL);
FRelativePIDL := PIDLMgr.GetPointerToLastID(FAbsolutePIDL);
PIDLMgr.FreePIDL(PIDL);
end;
end;
constructor TNamespace.CreateCustomNamespace(CustomID: Integer; AParent: TNamespace);
begin
FShellCache.Data.SmallIcon := -1;
FShellCache.Data.SmallOpenIcon := -1;
Exclude(FStates, nsShellDetailsSupported);
Exclude(FStates, nsShellFolder2Supported);
FreePIDLOnDestroy := False;
FNamespaceID := CustomID;
FParent := AParent
end;
constructor TNamespace.CreateFromFileName(FileName: WideString);
var
PIDL: PItemIDList;
begin
PIDL := PathToPIDL(FileName);
if Assigned(PIDL) then
Create(PIDL, nil)
else
// This will be called often with the autocomplete component while debugging
// in the IDE
// To turn off exception break go to Tools>Debugger Options>Add and type in
// "EVSTInvalidFileName" without the quotes. Make sure that is is checked.
// This will keep delphi from breaking on this exception
raise EVSTInvalidFileName.Create('Trying to create a TNamespace on a non existant File object');
end;
function TNamespace.Cut(NamespaceArray: TNamespaceArray): Boolean;
begin
Result := False;
if CanCutAll(NamespaceArray) and VerifyPIDLRelationship(NamespaceArray) then
Result := ExecuteContextMenuVerb('cut', NamespaceToRelativePIDLArray(NamespaceArray))
end;
function TNamespace.DataObjectMulti(NamespaceArray: TNamespaceArray): IDataObject;
begin
Result := InternalGetDataObjectInterface(NamespaceToRelativePIDLArray(NamespaceArray))
end;
function TNamespace.Delete(NamespaceArray: TNamespaceArray): Boolean;
begin
Result := False;
if CanDeleteAll(NamespaceArray) and VerifyPIDLRelationship(NamespaceArray) then
Result := ExecuteContextMenuVerb('delete', NamespaceToRelativePIDLArray(NamespaceArray))
end;
destructor TNamespace.Destroy;
begin
// Remember RelativePIDL points to end of AbsolutePIDL so only 1 actual PIDL.
if FreePIDLOnDestroy and Assigned(PIDLMgr) then
PIDLMgr.FreePIDL(FAbsolutePIDL);
if IsUnicode then
begin
if Assigned(FWin32FindDataW) then
FreeMem(FWin32FindDataW, SizeOf(TWin32FindDataW));
end else
if Assigned(FWin32FindDataA) then
FreeMem(FWin32FindDataA, SizeOf(TWin32FindDataA));
begin
end;
if Assigned(FSHGetFileInfoRec) then
begin
Finalize(FSHGetFileInfoRec^);
FreeMem(FSHGetFileInfoRec, SizeOf(TSHGetFileInfoRec));
end;
if (nsOwnsParent in States) and Assigned(Parent) then
Parent.Free;
FExtractImage.Free;
FShellLink.Free;
FShellFolder := nil;
FreeAndNIL(FImage);
inherited;
end;
function TNamespace.DetailsColumnTitle(ColumnIndex: integer): WideString;
{ Returns the Text that is in the Header of the Explorer Listview based on what }
{ the folder in the Treeview is displaying. Only implemented partially on }
{ different versions of Windows. It was undocumented until about Win98. }
{ Win2k implements this using IShellFolder2 }
{ Be careful of the reference point using DetailsXXXX functions. This method }
{ get the header titles a folder will show for its children. }
var
Details: TShellDetails;
Found: Boolean;
begin
FillChar(Details, SizeOf(Details), #0);
Found := False;
if DetailsValidIndex(ColumnIndex) then
begin
if Assigned(ShellFolder2) then
{ DO NOT PASS A FREAKING UNINITALIZED TSHELLDETAIL STRUCTURE TO THIS FUNCTION }
{ IT WILL CAUSE THE RESULT TO BE CORRECT BUT INTERLACED WITH GARBAGE. }
Found := ShellFolder2.GetDetailsOf(nil, UINT(ColumnIndex), Details) = S_OK;
if not Found and Assigned(ShellDetailsInterface) then
Found := ShellDetailsInterface.GetDetailsOf(nil, UINT(ColumnIndex), Details) = S_OK;
if Found then
Result := StrRetToStr(Details.str, RelativePIDL)
else
Result := DetailsDefaultColumnTitle(ColumnIndex)
end else
Result := ''
end;
function TNamespace.DetailsColumnTitleInfo(ColumnIndex: Integer): TDetailsColumnTitleInfo;
{ Returns the Text that is in the Header of the Explorer Listview based on what }
{ the folder in the Treeview is displaying. Only implemented partially on }
{ different versions of Windows. It was undocumented until about Win98. }
{ Win2k implements this using IShellFolder2 }
{ Be careful of the reference point using DetailsXXXX functions. This method }
{ get the header titles a folder will show for its children. }
var
Details: TShellDetails;
Found: Boolean;
begin
// Default
Result := tiLeftAlign;
FillChar(Details, SizeOf(Details), #0);
Found := False;
if DetailsValidIndex(ColumnIndex) then
begin
if Assigned(ShellFolder2) then
{ DO NOT PASS A FREAKING UNINITALIZED TSHELLDETAIL STRUCTURE TO THIS FUNCTION }
{ IT WILL CAUSE THE RESULT TO BE CORRECT BUT INTERLACED WITH GARBAGE. }
Found := ShellFolder2.GetDetailsOf(nil, UINT(ColumnIndex), Details) = S_OK;
if not Found and Assigned(ShellDetailsInterface) then
Found := ShellDetailsInterface.GetDetailsOf(nil, UINT(ColumnIndex), Details) = S_OK;
if Found then
begin
case Details.Fmt of
LVCFMT_CENTER: Result := tiCenterAlign;
LVCFMT_LEFT: Result := tiLeftAlign;
LVCFMT_RIGHT: Result := tiRightAlign;
LVCFMT_COL_HAS_IMAGES: Result := tiContainsImage
end
end
end
end;
function TNamespace.DetailsDefaultColumnTitle(ColumnIndex: integer): WideString;
{ If IShellDetails is not implemented then these are returned for the Header }
{ text as a default. Can be overridden. }
begin
case ColumnIndex of
-1, 0: Result := VET_COLUMN_NAMES[0];
1: Result := VET_COLUMN_NAMES[1];
2: Result := VET_COLUMN_NAMES[2];
3: Result := VET_COLUMN_NAMES[3];
4: Result := VET_COLUMN_NAMES[4];
5: Result := VET_COLUMN_NAMES[5];
6: Result := VET_COLUMN_NAMES[6];
7: Result := VET_COLUMN_NAMES[7];
8: Result := VET_COLUMN_NAMES[8];
9: Result := VET_COLUMN_NAMES[9];
end;
end;
function TNamespace.DetailsDefaultOf(ColumnIndex: integer): WideString;
{ If IShellDetail is not implemented the call to DetailsOf calls this and }
{ returns what it can to mimic the values in columns for a plain file, Name, }
{ size, type, date, attributes. }
var
IsSystemFolder: Boolean;
begin
Result := '';
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) then
{ This is totally undocumented. It works on Win98 will test on NT 4 soon }
{ Not a valid file so it has no size. #8 appears to mean "System File" }
IsSystemFolder := not ((FWin32FindDataW^.cFileName[0] = WideChar(#8)) or
(FWin32FindDataW^.cFileName[0] = WideChar(#0)) or
not FileSystem)
else
IsSystemFolder := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) then
{ This is totally undocumented. It works on Win98 will test on NT 4 soon }
{ Not a valid file so it has no size. #8 appears to mean "System File" }
IsSystemFolder := not ((FWin32FindDataA^.cFileName[0] = #8) or
(FWin32FindDataA^.cFileName[0] = #0) or
not FileSystem)
else
IsSystemFolder := False;
end;
case ColumnIndex of
-1, 0: Result := NameInFolder;
1: Result := SizeOfFileKB;
2: if IsSystemFolder then
Result := FileType
else
Result := STR_SYSTEMFOLDER;
3: Result := LastWriteTime;
4: Result := AttributesString;
else
Result := ''
end;
end;
function TNamespace.DetailsDefaultSupportedColumns: integer;
{ If IShellDetail is not implemented the call to SupportedColumns calls this }
{ and returns 5. It mimics the titles in the header for a plain file, Name, }
{ size, type, date, attributes. }
begin
Result := DefaultDetailColumns;
end;
function TNamespace.DetailsGetDefaultColumnState(ColumnIndex: integer): TSHColumnStates;
{ Be careful of the reference point using DetailsXXXX functions. This function }
{ gets the GetDefaultColumnState of the folder for its children if it exposes }
{ IShellFolder2. If it does not it returns csOnByDefault so it will be shown }
var
Flags: Longword;
begin
Result := [];
if DetailsValidIndex(ColumnIndex) then
begin
if Assigned(ShellFolder2) then
begin
Flags := 0;
if ShellFolder2.GetDefaultColumnState(ColumnIndex, Flags) = NOERROR then
begin
if SHCOLSTATE_TYPE_STR and Flags <> 0 then Include(Result, csTypeString);
if SHCOLSTATE_TYPE_INT and Flags <> 0 then Include(Result, csTypeInt);
if SHCOLSTATE_TYPE_DATE and Flags <> 0 then Include(Result, csTypeDate);
if SHCOLSTATE_ONBYDEFAULT and Flags <> 0 then Include(Result, csOnByDefault);
if SHCOLSTATE_TYPE_SLOW and Flags <> 0 then Include(Result, csSlow);
if SHCOLSTATE_EXTENDED and Flags <> 0 then Include(Result, csExtended);
if SHCOLSTATE_SECONDARYUI and Flags <> 0 then Include(Result, csSecondaryUI);
if SHCOLSTATE_HIDDEN and Flags <> 0 then Include(Result, csHidden);
end else
{ Some of the old namespaces will expose ShellFolder2 but don't support }
{ it completely. These resort to IShellDetails so assume this is the case }
Result := [csOnByDefault];
end else
{ Some of the old namespaces don't expose ShellFolder2. These resort to }
{ IShellDetails so assume this is the case }
Result := [csOnByDefault];
end
end;
function TNamespace.DetailsOf(ColumnIndex: integer): WideString;
{ Returns the text for the desired column (detail view in the listview in }
{ Explorer) using IShellDetail or using information pulled from the namespace }
{ by other means. }
{ Be careful of the reference point using DetailsXXXX functions. This function }
{ gets the Details of the current namespace using its parent folder. }
var
Details: TShellDetails;
OldError: Integer;
begin
Result := '';
OldError := SetErrorMode(SEM_FAILCRITICALERRORS or SEM_NOOPENFILEERRORBOX);
try
{ Force parent namespace creation if necessary }
if Assigned(ParentShellFolder) and not IsDesktop then
begin
{ The parent is responsible for the columns }
if Parent.DetailsValidIndex(ColumnIndex) then
begin
FillChar(Details, SizeOf(Details), #0);
if Assigned(ParentShellFolder2) then
begin
{ DO NOT PASS A FREAKING UNINITALIZED TSHELLDETAIL STRUCTURE TO THIS FUNCTION }
{ IT WILL CAUSE THE RESULT TO BE CORRECT BUT INTERLACED WITH GARBAGE. }
if ParentShellFolder2.GetDetailsOf(RelativePIDL, UINT(ColumnIndex), Details) <> S_OK then
begin
if Assigned(ParentShellDetailsInterface) then
if ParentShellDetailsInterface.GetDetailsOf(RelativePIDL, UINT(ColumnIndex), Details) = S_OK then
Result := StrRetToStr(Details.Str, RelativePIDL)
else
Result := DetailsDefaultOf(ColumnIndex)
end else
Result := StrRetToStr(Details.Str, RelativePIDL)
end else
if Assigned(ParentShellDetailsInterface) then
begin
if ParentShellDetailsInterface.GetDetailsOf(RelativePIDL, UINT(ColumnIndex), Details) = S_OK then
Result := StrRetToStr(Details.Str, RelativePIDL);
end else
Result := DetailsDefaultOf(ColumnIndex)
end
end
finally
SetErrorMode(OldError);
end
end;
function TNamespace.DetailsOfEx(ColumnIndex: integer): WideString;
var
ColumnID: TSHColumnID;
V: OLEVariant;
ColState: TSHColumnStates;
// Date: TDateTime;
begin
Result := '';
V := Null;
if Assigned(ShellFolder2) then
begin
ColState := Parent.DetailsGetDefaultColumnState(ColumnIndex);
FillChar(ColumnID, SizeOf(ColumnID), #0);
if ParentShellFolder2.MapColumnToSCID(ColumnIndex, ColumnID) = NOERROR then
if ParentShellFolder2.GetDetailsEx(RelativePIDL, ColumnID, V) = NOERROR then
begin
if csTypeString in ColState then
Result := WideString(V)
else
if csTypeInt in ColState then
Result := IntToStr( Integer(V))
else
if csTypeInt in ColState then
Result := IntToStr(V)
else
// if csTypeDate in ColState then
// Date := V;
end else
Result := DetailsDefaultOf(ColumnIndex)
else
Result := DetailsDefaultOf(ColumnIndex)
end
end;
function TNamespace.DetailsSupportedColumns: integer;
{ If IShellDetail or IShellFolder2 is implemented the call to }
{ DetailsSupportedColumns returns total number of columns the namespace }
{ supports. This allows the header to change dynamiclly. }
{ Be careful of the reference point using DetailsXXXX functions. This function }
{ gets number of columns this folder will display for its children. }
const
{ ShellFolder2 is broken on WinME for "Scanners and Cameras" folders. }
{ It goes into an infinate loop. }
{ WinXP is just as broken. }
COLUMNLIMIT = 200; // Safely valve for namespaces that don't follow the rules
var
Details: TShellDetails;
Flags: DWord;
Found: Boolean;
begin
FillChar(Details, SizeOf(Details), #0);
if not (scSupportedColumns in ShellCache.ShellCacheFlags) then
begin
FShellCache.Data.SupportedColumns := 0;
if Assigned(ShellFolder2) then
begin
while (ShellFolder2.GetDefaultColumnState(FShellCache.Data.SupportedColumns, Flags) = NOERROR) and
(FShellCache.Data.SupportedColumns < COLUMNLIMIT) do
Inc(FShellCache.Data.SupportedColumns);
// Error detected, the namespace does not follow the rules
if FShellCache.Data.SupportedColumns = COLUMNLIMIT then
FShellCache.Data.SupportedColumns := 0;
Found := FShellCache.Data.SupportedColumns > 0;
{ Some folders support both methods but only work right with GetDetailsOf }
if not Found then
while (ShellFolder2.GetDetailsOf(nil, UINT(ShellCache.Data.SupportedColumns), Details) = S_OK) and
(FShellCache.Data.SupportedColumns < COLUMNLIMIT) do
Inc(FShellCache.Data.SupportedColumns);
// Error detected, the namespace does not follow the rules
if FShellCache.Data.SupportedColumns = COLUMNLIMIT then
FShellCache.Data.SupportedColumns := 0;
end;
{ Some folders support both but only work right with IShellDetials }
{ The History Folder is an example. }
Found := FShellCache.Data.SupportedColumns > 0;
{ DO NOT PASS A FREAKING UNINITALIZED TSHELLDETAIL STRUCTURE TO THIS FUNCTION }
{ IT WILL CAUSE THE RESULT TO BE CORRECT BUT INTERLACED WITH GARBAGE. }
if not Found and Assigned(ShellDetailsInterface) then
while ShellDetailsInterface.GetDetailsOf(nil, UINT(ShellCache.Data.SupportedColumns), Details) = S_OK do
Inc(FShellCache.Data.SupportedColumns);
if ShellCache.Data.SupportedColumns = 0 then
FShellCache.Data.SupportedColumns := DetailsDefaultSupportedColumns;
Include(FShellCache.ShellCacheFlags, scSupportedColumns);
end;
Result := ShellCache.Data.SupportedColumns
end;
function TNamespace.DetailsSupportedVisibleColumns: TVisibleColumnIndexArray;
// Returns and array of currently visible columns in details mode. Two bits of info
// are returned with this method.
// 1) The number of visible column: Length(DetailsSupportedVisibleColumns)
// 2) The indicies of visible columns: [0, 2, 4, 6] Details index 0, 2, 4, 6 are shown\
var
i: integer;
begin
Result := nil;
for i := 0 to DetailsSupportedColumns - 1 do
begin
if csOnByDefault in DetailsGetDefaultColumnState(i) then
begin
if DetailsColumnTitle(i) <> '' then
begin
SetLength(Result, Length(Result) + 1);
Result[Length(Result) - 1] := i
end
end
end;
end;
function TNamespace.DetailsValidIndex(DetailsIndex: integer): Boolean;
{ Test to see if the passed index is in the range of the number of detail }
{ columns the namespace has. }
begin
Result := (DetailsIndex > -1) and (DetailsIndex < DetailsSupportedColumns)
end;
function TNamespace.DragEffect(grfKeyState: integer): HRESULT;
{ Looks at the KeyState during a IDragDrop notification. The return value }
{ is the Effect that is desired by the user, using the GetDesiredDragEffect}
{ function, and what Effects are supported by the IDragSource }
function AvailableEffects: LongInt;
begin
Result := DROPEFFECT_NONE;
if CanMove then Result := DROPEFFECT_MOVE;
if CanCopy then Result := Result or DROPEFFECT_COPY;
if CanLink then Result := Result or DROPEFFECT_LINK;
end;
var
KeyEffect: HResult;
ValidEffects: Longword;
begin
// See what the user is requesting by looking at the key board
KeyEffect := RequestedDragEffect(grfKeyState);
// What effects do the namespace support?
ValidEffects := AvailableEffects;
// Let the users desires prevail
if KeyEffect and ValidEffects > 0 then Result := KeyEffect
else // If the users desires are undo-able pick the first effect avaiable
if ValidEffects and DROPEFFECT_MOVE > 1 then Result := DROPEFFECT_MOVE
else // Windows default is MOVE so check it first
if ValidEffects and DROPEFFECT_COPY > 1 then Result := DROPEFFECT_COPY
else
if ValidEffects and DROPEFFECT_LINK > 1 then Result := DROPEFFECT_LINK
else
Result := DROPEFFECT_NONE;
end;
function TNamespace.DisplayNameOf(Flags: Longword): WideString;
var
StrRet: TSTRRET;
begin
if Assigned(ParentShellFolder) then
begin
if ParentShellFolder.GetDisplayNameOf(RelativePIDL, Flags, StrRet) = NOERROR
then
Result := StrRetToStr(StrRet, RelativePIDL)
else
Result := '';
end else
Result := ''
end;
function TNamespace.DragEnter(const dataObj: IDataObject;
grfKeyState: Integer; pt: TPoint; var dwEffect: Integer): HResult;
{ Called when there is a pending COM drop on the namespace. The namespace will }
{ decide if it can handle the information passed. }
begin
if DropTarget and Assigned(DropTargetInterface) then
Result := DropTargetInterface.DragEnter(dataObj, grfKeyState, pt, dwEffect)
else begin
dwEffect := DROPEFFECT_NONE;
Result := S_OK
end
end;
function TNamespace.DragLeave: HResult;
{ Called when there is a pending COM drop on the namespace. The namespace will }
{ decide if it can handle the information passed. }
begin
if DropTarget and Assigned(DropTargetInterface) then
Result := DropTargetInterface.DragLeave
else
Result := S_OK
end;
function TNamespace.DragOver(grfKeyState: Integer; pt: TPoint;
var dwEffect: Integer): HResult;
{ Called when there is a pending COM drop on the namespace. The namespace will }
{ decide if it can handle the information passed. }
begin
if DropTarget and Assigned(DropTargetInterface) then
Result := DropTargetInterface.DragOver(grfKeyState, pt, dwEffect)
else begin
dwEffect := DROPEFFECT_NONE;
Result := S_OK
end
end;
function TNamespace.Drop(const dataObj: IDataObject; grfKeyState: Integer;
pt: TPoint; var dwEffect: Integer): HResult;
{ Called when there is a COM object is dropped on the namespace. The namespace }
{ will handle the action as well. }
begin
if DropTarget and Assigned(DropTargetInterface) then
Result := DropTargetInterface.Drop(dataObj, grfKeyState, pt, dwEffect)
else begin
dwEffect := DROPEFFECT_NONE;
Result := S_OK
end
end;
function TNamespace.EnumerateFolder(Folders, NonFolders,
IncludeHidden: Boolean; EnumFunc: TEnumFolderCallback;
UserData: Pointer): integer;
{ Enumerate a folder to get its subfolders. For each subfolder the the }
{ callback function is called so a new TNamespace may be created. }
{ You have a choice to receive Folders, NonFolders (files), and Hidden }
{ objects, UserData is useful to pass info back to the callback function. }
{ Encapsulates the IShellFolder.EnumObjects function }
{ The reciever of the Callback function is responsible for Freeing the PIDLs! }
{ Returns the number of objects in the folder. }
var
Enum: IEnumIDList;
Flags: Longword;
Fetched: Longword;
Item: PItemIDList;
Terminate: Boolean;
OldError: integer;
begin
Result := 0;
{ This fixed a problem Rik Baker had: }
{ "The error message is "C:\WINDOWS\SYSTEM\ODBCINST.DLL is not a valid }
{ Windows Image", however the file appears fine and I've now seen the same }
{ message on 9 different 2000 boxes spread across the country. }
OldError := SetErrorMode(SEM_FAILCRITICALERRORS or SEM_NOOPENFILEERRORBOX);
try
if Assigned(ShellFolder) then
begin
if Assigned(EnumFunc) then
begin
Flags := 0;
Terminate := False;
if Folders then
Flags := Flags or SHCONTF_FOLDERS;
if NonFolders then
Flags := Flags or SHCONTF_NONFOLDERS;
if IncludeHidden then
Flags := Flags or SHCONTF_INCLUDEHIDDEN;
// Flags := Flags or SHCONTF_INIT_ON_FIRST_NEXT or SHCONTF_NETPRINTERSRCH or
// SHCONTF_SHAREABLE or SHCONTF_STORAGE;
// Right now you can't mix custom items and real shell items in the same folder
ShellFolder.EnumObjects(0, Flags, Enum);
if Assigned(Enum) then
while (Enum.Next(1, Item, Fetched) = NOERROR) and not Terminate do
begin
if EnumFunc(Item, Self, UserData, Terminate) then
Inc(Result)
end
end
end
finally
SetErrorMode(OldError);
end
end;
{$IFDEF VIRTUALNAMESPACES}
function TNamespace.EnumerateFolderHook(Folders, NonFolders, IncludeHidden: Boolean;
EnumFunc: TEnumFolderCallback; UserData: pointer): Integer;
var
Enum: IEnumIDList;
Flags: Longword;
Fetched: Longword;
Item: PItemIDList;
Terminate: Boolean;
OldError: integer;
VHook: IShellFolder;
begin
Result := 0;
if IsHookedNamespace then
begin
{ This fixed a problem Rik Baker had: }
{ "The error message is "C:\WINDOWS\SYSTEM\ODBCINST.DLL is not a valid }
{ Windows Image", however the file appears fine and I've now seen the same }
{ message on 9 different 2000 boxes spread across the country. }
OldError := SetErrorMode(SEM_FAILCRITICALERRORS or SEM_NOOPENFILEERRORBOX);
try
VHook := NamespaceExtensionFactory.VirtualHook(AbsolutePIDL);
if Assigned(VHook) then
begin
if Assigned(EnumFunc) then
begin
Flags := 0;
Terminate := False;
if Folders then
Flags := Flags or SHCONTF_FOLDERS;
if NonFolders then
Flags := Flags or SHCONTF_NONFOLDERS;
if IncludeHidden then
Flags := Flags or SHCONTF_INCLUDEHIDDEN;
// Right now you can't mix custom items and real shell items in the same folder
VHook.EnumObjects(0, Flags, Enum);
if Assigned(Enum) then
while (Enum.Next(1, Item, Fetched) = NOERROR) and not Terminate do
begin
if EnumFunc(Item, Self, UserData, Terminate) then
Inc(Result)
end
end
end
finally
SetErrorMode(OldError);
end
end
end;
{$ENDIF}
function TNamespace.ExecuteContextMenuVerb(AVerb: WideString;
APIDLArray: TRelativePIDLArray; MessageWindowParent: HWnd = 0): Boolean;
const
MaxVerbLen = 128;
var
ContextMenu, ContextMenu2: IContextMenu;
Menu: hMenu;
InvokeInfo: TCMInvokeCommandInfoEx;
i: integer;
VerbA, AVerbA: string;
VerbW: WideString;
VerbFound, StrFound: Boolean;
MenuID: LongWord;
GenericVerb: Pointer;
begin
if Assigned(ParentShellFolder) then
begin
if Assigned(APIDLArray) then
ContextMenu := InternalGetContextMenuInterface(APIDLArray)
else
ContextMenu := ContextMenuInterface;
if Assigned(ContextMenu) then
ContextMenu.QueryInterface(IID_IContextMenu2, ContextMenu2);
Menu := CreatePopupMenu;
if Assigned(ContextMenu) or Assigned(ContextMenu2) then
begin
try
if Assigned(ContextMenu2) then
ContextMenu2.QueryContextMenu(Menu, 0, 1, $7FFF, CMF_NORMAL or CMF_EXPLORE)
else
ContextMenu.QueryContextMenu(Menu, 0, 1, $7FFF, CMF_NORMAL or CMF_EXPLORE);
FillChar(InvokeInfo, SizeOf(InvokeInfo), #0);
if IsUnicode then
begin
SetLength(VerbW, MaxVerbLen);
GenericVerb := @VerbW[1];
end
else begin
SetLength(VerbA, MaxVerbLen);
GenericVerb := @VerbA[1];;
AVerbA := AVerb
end;
VerbFound := False;
i := 0;
{ The result of using the 'verb' string and the MakeIntResource is }
{ different expecially on system folders. This forces it to use }
{ MakeIntResource if it can. }
while (i < GetMenuItemCount(Menu)) and not VerbFound do
begin
MenuID := GetMenuItemID(Menu, i);
if (MenuID <> $FFFFFFFF) and (MenuID > 0) then
begin
FillChar(GenericVerb^, Length(VerbW) * 2, #0);
if IsUnicode then
begin
if Assigned(ContextMenu2) then
StrFound := Succeeded(ContextMenu2.GetCommandString(MenuID-1, GCS_VERBW, nil, GenericVerb, MaxVerbLen))
else
StrFound := Succeeded(ContextMenu.GetCommandString(MenuID-1, GCS_VERBW, nil, GenericVerb, MaxVerbLen));
if StrFound then
begin
SetLength(VerbW, StrLenW(PWideChar( VerbW)));
if lstrcmpiW_VST(PWideChar(VerbW), PWideChar(AVerb)) = 0 then
begin
InvokeInfo.fMask := CMIC_MASK_UNICODE;
{ For some reason the lpVerbW won't work }
InvokeInfo.lpVerb := MakeIntResourceA(MenuID-1);
InvokeInfo.lpVerbW := MakeIntResourceW(MenuID-1);
VerbFound := True
end;
SetLength(VerbW, MaxVerbLen);
end
end else
begin
if Assigned(ContextMenu2) then
StrFound := Succeeded(ContextMenu2.GetCommandString(MenuID-1, GCS_VERB, nil, GenericVerb, MaxVerbLen))
else
StrFound := Succeeded(ContextMenu.GetCommandString(MenuID-1, GCS_VERB, nil, GenericVerb, MaxVerbLen));
if StrFound then
begin
SetLength(VerbA, StrLen(PChar( VerbA)));
if lstrcmpi(PChar( VerbA), PChar(AVerbA)) = 0 then
begin
InvokeInfo.lpVerb := MakeIntResourceA(MenuID-1);
VerbFound := True
end;
SetLength(VerbA, MaxVerbLen);
end
end
end;
Inc(i)
end;
if not VerbFound then
begin
if IsUnicode then
begin
InvokeInfo.fMask := CMIC_MASK_UNICODE;
InvokeInfo.lpVerbW := PWideChar( AVerb)
end else
InvokeInfo.lpVerb := PChar( AVerbA);
end;
if IsUnicode then
InvokeInfo.cbSize := SizeOf(TCMInvokeCommandInfoEx)
else
InvokeInfo.cbSize := SizeOf(TCMInvokeCommandInfo);
if MessageWindowParent = 0 then
InvokeInfo.hWnd := Application.Handle
else
InvokeInfo.hWnd := MessageWindowParent;
InvokeInfo.nShow := SW_SHOWNORMAL;
if Assigned(ContextMenu2) then
Result := Succeeded(ContextMenu2.InvokeCommand(InvokeInfo))
else
Result := Succeeded(ContextMenu.InvokeCommand(InvokeInfo))
finally
if Menu <> 0 then
DestroyMenu(Menu);
end;
end else
Result := False
end else
Result := False
end;
function TNamespace.FolderSize(Invalidate: Boolean; RecurseFolder: Boolean = False): Int64;
begin
if not(scFolderSize in ShellCache.ShellCacheFlags) or Invalidate then
begin
if Folder and FileSystem then
FShellCache.Data.FolderSize := CalcuateFolderSize(NameForParsing, RecurseFolder);
Include(FShellCache.ShellCacheFlags, scFolderSize);
end;
Result := FShellCache.Data.FolderSize
end;
function TNamespace.ExplorerStyleAttributeStringList(CapitalLetters: Boolean): WideString;
begin
Result := '';
if Archive then
Result := Result + STR_ARCHIVE;
if Hidden then
Result := Result + STR_HIDDEN;
if ReadOnlyFile then
Result := Result + STR_READONLY;
if SystemFile then
Result := Result + STR_SYSTEM;
if Compressed then
Result := Result + STR_COMPRESS;
if not CapitalLetters then
Result := AnsiLowerCase(Result)
end;
function TNamespace.GetArchive: Boolean;
{ GETTER: Does the file attributes contain Archive? }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_ARCHIVE <> 0
else
Result := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_ARCHIVE <> 0
else
Result := False;
end
end;
function TNamespace.GetAttributesString: WideString;
begin
if FileSystem then
Result := ExplorerStyleAttributeStringList(True)
else
Result := ''
end;
function TNamespace.GetBrowsable: Boolean;
begin
Result := TestAttributesOf(SFGAO_BROWSABLE, False)
end;
function TNamespace.GetCanCopy: Boolean;
begin
if not (scCanCopy in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_CANCOPY, False) then
Include(FShellCache.Data.Attributes, caCanCopy);
Include(FShellCache.ShellCacheFlags, scCanCopy);
end;
Result := caCanCopy in ShellCache.Data.Attributes
end;
function TNamespace.GetCanDelete: Boolean;
{ GETTER: Can we delete the namespace? }
begin
if not (scCanDelete in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_CANDELETE, False) then
Include(FShellCache.Data.Attributes, caCanDelete);
Include(FShellCache.ShellCacheFlags, scCanDelete);
end;
Result := caCanDelete in ShellCache.Data.Attributes
end;
function TNamespace.GetCanLink: Boolean;
begin
if not (scCanLink in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_CANLINK, False) then
Include(FShellCache.Data.Attributes, caCanLink);
Include(FShellCache.ShellCacheFlags, scCanLink);
end;
Result := caCanLink in ShellCache.Data.Attributes
end;
function TNamespace.GetCanMove: Boolean;
begin
if not (scCanMove in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_CANMOVE, False) then
Include(FShellCache.Data.Attributes, caCanMove);
Include(FShellCache.ShellCacheFlags, scCanMove);
end;
Result := caCanMove in ShellCache.Data.Attributes
end;
function TNamespace.GetCanRename: Boolean;
{ GETTER: Can we Rename the namespace? }
begin
if not (scCanRename in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_CANRENAME, False) then
Include(FShellCache.Data.Attributes, caCanRename);
Include(FShellCache.ShellCacheFlags, scCanRename);
end;
Result := caCanRename in ShellCache.Data.Attributes
end;
function TNamespace.GetCLSID: TGUID;
var
DescriptionID: TSHDESCRIPTIONID;
PersistFolder: IPersistFolder;
begin
Result := GUID_NULL;
if Assigned(ParentShellFolder) then
if Succeeded(SHGetDataFromIDList(ParentShellFolder, RelativePIDL, SHGDFIL_DESCRIPTIONID, @DescriptionID, SizeOf(TSHDESCRIPTIONID))) then
Result := DescriptionID.Id;
if IsEqualGUID(Result, GUID_NULL) then
begin
if Succeeded(ShellFolder.QueryInterface(IPersistFolder, PersistFolder)) then
if not Succeeded(PersistFolder.GetClassID(Result)) then
Result := GUID_NULL;
end;
end;
function TNamespace.GetCompressed: Boolean;
{ GETTER: Does the file attributes contain Compressed? }
begin
if not (scCompressed in ShellCache.ShellCacheFlags) then
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
if FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_COMPRESSED <> 0 then
Include(FShellCache.Data.Attributes, caCompressed)
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
if FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_COMPRESSED <> 0 then
Include(FShellCache.Data.Attributes, caCompressed)
end;
Include(FShellCache.ShellCacheFlags, scCompressed);
end;
Result := caCompressed in ShellCache.Data.Attributes;
end;
function TNamespace.GetContextMenuInterface: IContextMenu;
var
PIDLArray: TRelativePIDLArray;
begin
if not Assigned(Result) then
begin
SetLength(PIDLArray, 1);
PIDLArray[0] := RelativePIDL;
Result := InternalGetContextMenuInterface(PIDLArray);
end
end;
function TNamespace.GetContextMenu2Interface: IContextMenu2;
var
Found: Boolean;
ContextMenu: IContextmenu;
begin
Found := False;
ContextMenu := ContextMenuInterface;
if Assigned(ContextMenu) then
begin
Found := ContextMenu.QueryInterface(IID_IContextMenu2, Pointer(Result)) <> E_NOINTERFACE;
CurrentContextMenu2 := Result
end;
if not Found then
Result := nil
end;
function TNamespace.GetContextMenu3Interface: IContextMenu3;
var
Found: Boolean;
ContextMenu: IContextmenu;
begin
Found := False;
ContextMenu := ContextMenuInterface;
if Assigned(ContextMenu) then
begin
Found := ContextMenu.QueryInterface(IContextMenu3, Pointer(Result)) <> E_NOINTERFACE;
CurrentContextMenu2 := Result
end;
if not Found then
Result := nil
end;
function TNamespace.GetCreationTime: WideString;
{ GETTER: Creation time of the file. }
begin
if not (scCreationTime in ShellCache.ShellCacheFlags) then
begin
{ The Shell only caches the LastWrite time in the PIDL }
GetFileTimes;
if IsUnicode then
begin
if Assigned(FWin32FindDataW) and FileSystem then
FShellCache.Data.CreationTime := ConvertTFileTimeToLocalStr(FWin32FindDataW^.ftCreationTime)
else
FShellCache.Data.CreationTime := '';
end else
begin
if Assigned(FWin32FindDataA) and FileSystem then
FShellCache.Data.CreationTime := ConvertTFileTimeToLocalStr(FWin32FindDataA^.ftCreationTime)
else
FShellCache.Data.CreationTime := '';
end;
Include(FShellCache.ShellCacheFlags, scCreationTime);
end;
Result := ShellCache.Data.CreationTime
end;
function TNamespace.GetCreationDateTime: TDateTime;
begin
Result := ConvertFileTimetoDateTime(CreationTimeRaw)
end;
function TNamespace.GetCreationTimeRaw: TFileTime;
begin
if IsUnicode then
begin
{ The Shell only caches the LastWrite time in the PIDL }
GetFileTimes;
if Assigned(FWin32FindDataW) then
Result := FWin32FindDataW^.ftCreationTime
else
FillChar(Result, SizeOf(Result), #0);
end else
begin
{ The Shell only caches the LastWrite time in the PIDL }
GetFileTimes;
if Assigned(FWin32FindDataA) then
Result := FWin32FindDataA^.ftCreationTime
else
FillChar(Result, SizeOf(Result), #0);
end
end;
procedure TNamespace.GetDataFromIDList;
{ Retrieves and caches the Data stored by the shell PIDL. }
var
Error: Boolean;
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) and not IsDesktop then
begin
if not (scInvalidIDListData in ShellCache.ShellCacheFlags) then
begin
Error := True;
try
if Assigned(ParentShellFolder) then
begin
GetMem(FWin32FindDataW, SizeOf(TWin32FindDataW));
FillChar(FWin32FindDataW^, SizeOf(FWin32FindDataW^), #0);
{ Children of the Desktop won't work if accessed from the Desktop }
{ ShellFolder, they must use the physical Desktop folder. }
if Assigned(Parent) and (Parent.IsDesktop) and Assigned(PhysicalDesktopFolder) then
begin
Error := SHGetDataFromIDListW_VST(PhysicalDesktopFolder.ShellFolder, RelativePIDL,
SHGDFIL_FINDDATA, FWin32FindDataW, SizeOf(TWin32FindDataW)) <> NOERROR;
end else
Error := SHGetDataFromIDListW_VST(ParentShellFolder, RelativePIDL, SHGDFIL_FINDDATA,
FWin32FindDataW, SizeOf(TWin32FindDataW)) <> NOERROR;
end
finally
if Error then
begin
if Assigned(FWin32FindDataW) then
FreeMem(FWin32FindDataW, SizeOf(TWin32FindDataW));
FWin32FindDataW := nil;
Include(FShellCache.ShellCacheFlags, scInvalidIDListData)
end
end;
end
end
end else
begin
if not Assigned(FWin32FindDataA) and not IsDesktop then
begin
if not (scInvalidIDListData in ShellCache.ShellCacheFlags) then
begin
Error := True;
try
if Assigned(ParentShellFolder) then
begin
GetMem(FWin32FindDataA, SizeOf(TWin32FindDataA));
FillChar(FWin32FindDataA^, SizeOf(TWin32FindDataA), #0);
{ Children of the Desktop won't work if accessed from the Desktop }
{ ShellFolder, they must use the physical Desktop folder. }
if Assigned(Parent) and (Parent.IsDesktop) and Assigned(PhysicalDesktopFolder) then
begin
Error := SHGetDataFromIDListA(PhysicalDesktopFolder.ShellFolder, RelativePIDL,
SHGDFIL_FINDDATA, FWin32FindDataA, SizeOf(TWin32FindDataA)) <> NOERROR;
end else
Error := SHGetDataFromIDListA(ParentShellFolder, RelativePIDL, SHGDFIL_FINDDATA,
FWin32FindDataA, SizeOf(TWin32FindDataA)) <> NOERROR;
end
finally
if Error then
begin
if Assigned(FWin32FindDataA) then
FreeMem(FWin32FindDataA, SizeOf(TWin32FindDataA));
FWin32FindDataA := nil;
Include(FShellCache.ShellCacheFlags, scInvalidIDListData)
end
end;
end
end
end
end;
function TNamespace.GetDataObjectInterface: IDataObject;
begin
Result := InternalGetDataObjectInterface(nil)
end;
function TNamespace.GetDescription: TObjectDescription;
var
DescriptionID: TSHDESCRIPTIONID;
begin
Result := odError;
if Assigned(ParentShellFolder) then
begin
if Succeeded(SHGetDataFromIDList(ParentShellFolder, RelativePIDL, SHGDFIL_DESCRIPTIONID, @DescriptionID, SizeOf(TSHDESCRIPTIONID))) then
Result := TObjectDescription(DescriptionID.dwDescriptionId)
end
end;
function TNamespace.GetDetailsSupported: Boolean;
begin
{ IShellDetails depends on the parent folder implementing the interface }
if Assigned(Parent) then
Result := Assigned(Parent.ShellFolder2) or Assigned(ParentShellDetailsInterface)
else
Result := False
end;
function TNamespace.GetDirectory: Boolean;
{ GETTER: Does the file attributes contain Directory? }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_DIRECTORY <> 0
else
Result := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_DIRECTORY <> 0
else
Result := False;
end
end;
function TNamespace.GetDropTarget: Boolean;
{ GETTER: Can we drop another object on this namespace? Note the Desktop is }
{ handled as a special case. The IDropTarget is mapped to the physical folder }
{ location in the DropTargetInterface property. }
begin
Result := TestAttributesOf(SFGAO_DROPTARGET, False) or
PIDLMgr.IsDesktopFolder(RelativePIDL);
end;
function TNamespace.GetDropTargetInterface: IDropTarget;
var
Found: Boolean;
{$IFDEF VIRTUALNAMESPACES}
Folder: IShellFolder;
{$ENDIF}
begin
if not Assigned(FDropTargetInterface) then
begin
{$IFDEF VIRTUALNAMESPACES}
Found := False;
if IsHookedNamespace then
begin
// Allow the VirtualNamespace to create a DropTarget on the Hooked namespace.
Folder := NamespaceExtensionFactory.VirtualHook(AbsolutePIDL);
Found := Succeeded(Folder.CreateViewObject(0, IID_IDropTarget, Pointer(FDropTargetInterface)));
end;
if not Found and Assigned(ParentShellFolder) then
Found := ParentShellFolder.GetUIObjectOf(0, 1, FRelativePIDL,
IID_IDropTarget, nil, Pointer(FDropTargetInterface)) = NOERROR;
if not Found and IsDesktop then
FDropTargetInterface := PhysicalDesktopFolder.DropTargetInterface;
{$ELSE}
Found := False;
if Assigned(ParentShellFolder) then
begin
Found := ParentShellFolder.GetUIObjectOf(0, 1, FRelativePIDL,
IID_IDropTarget, nil, Pointer(FDropTargetInterface)) = NOERROR;
end;
if not Found and IsDesktop then
FDropTargetInterface := PhysicalDesktopFolder.DropTargetInterface;
{$ENDIF}
end;
Result := FDropTargetInterface
end;
function TNamespace.GetExtension: WideString;
begin
Result := ExtractFileExtW(NameParseAddress)
end;
function TNamespace.GetExtractImage: TExtractImage;
begin
if not Assigned(FExtractImage) then
begin
FExtractImage := TExtractImage.Create;
FExtractImage.Owner := Self
end;
Result := FExtractImage
end;
function TNamespace.GetExtractIconAInterface: IExtractIcon;
var
Found: Boolean;
begin
if Assigned(ParentShellFolder) then
begin
Found := Succeeded(ParentShellFolder.GetUIObjectOf(0, 1, FRelativePIDL, IExtractIconA, nil, Pointer(Result)));
if not Found and Assigned(ShellFolder) then
Found := Succeeded(ShellFolder.CreateViewObject(0, IExtractIconA, Pointer(Result)));
if not Found then
Result := nil
end
end;
function TNamespace.GetExtractIconWInterface: IExtractIconW;
var
Found: Boolean;
begin
if Assigned(ParentShellFolder) then
begin
Found := Succeeded(ParentShellFolder.GetUIObjectOf(0, 1, FRelativePIDL, IExtractIconW, nil, Pointer(Result)));
if not Found and Assigned(ShellFolder) then
Found := Succeeded(ShellFolder.CreateViewObject(0, IExtractIconW, Pointer(Result)));
if not Found then
Result := nil
end
end;
function TNamespace.GetFileName: WideString;
{ GETTER: FileName from the file system (FindFirst) }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.cFileName
else
Result := '';
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.cFileName
else
Result := '';
end
end;
function TNamespace.GetFileSysAncestor: Boolean;
// Only works reliablely on Win2k and above
begin
if not (scFileSysAncestor in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_FILESYSANCESTOR, False) then
Include(FShellCache.Data.Attributes, caFileSysAncestor);
Include(FShellCache.ShellCacheFlags, scFileSysAncestor);
end;
Result := caFileSysAncestor in ShellCache.Data.Attributes
end;
function TNamespace.GetFileSystem: Boolean;
{ GETTER: Is the namespace part of the physical file system? }
begin
if not (scFileSystem in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_FILESYSTEM, False) then
Include(FShellCache.Data.Attributes, caFileSystem);
Include(FShellCache.ShellCacheFlags, scFileSystem);
end;
Result := caFileSystem in ShellCache.Data.Attributes
end;
procedure TNamespace.GetFileTimes;
var
Handle: THandle;
FileDataA: TWin32FindData;
FileDataW: TWin32FindDataW;
S: string;
begin
if not (scFileTimes in ShellCache.ShellCacheFlags) then
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
{ The Shell only caches the LastWrite time in the PIDL }
if FileSystem and Assigned(FWin32FindDataW) then
begin
FillChar(FileDataW, SizeOf(FileDataW), #0);
Handle := FindFirstFileW_VST(PWideChar( NameParseAddress), FileDataW);
if Handle <> INVALID_HANDLE_VALUE then
begin
Windows.FindClose(Handle); // There is no FindCloseW
FWin32FindDataW.ftLastAccessTime := FileDataW.ftLastAccessTime;
FWin32FindDataW.ftCreationTime := FileDataW.ftCreationTime;
FWin32FindDataW.ftLastWriteTime := FileDataW.ftLastWriteTime
end
end;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
{ The Shell only caches the LastWrite time in the PIDL }
if FileSystem and Assigned(FWin32FindDataA) then
begin
FillChar(FileDataA, SizeOf(FileDataA), #0);
S := NameParseAddress;
Handle := FindFirstFileA(PChar( S), FileDataA);
if Handle <> INVALID_HANDLE_VALUE then
begin
Windows.FindClose(Handle); // There is no ASCI and Wide version
FWin32FindDataA.ftLastAccessTime := FileDataA.ftLastAccessTime;
FWin32FindDataA.ftCreationTime := FileDataA.ftCreationTime;
FWin32FindDataA.ftLastWriteTime := FileDataA.ftLastWriteTime
end
end;
end;
Include(FShellCache.ShellCacheFlags, scFileTimes)
end;
end;
function TNamespace.GetFileType: WideString;
// File type string shown in column 3 of Explorer Listview
begin
if not (scFileType in ShellCache.ShellCacheFlags) then
begin
if not Assigned(FSHGetFileInfoRec) then
GetSHFileInfo;
if Assigned(FSHGetFileInfoRec) then
begin
FShellCache.Data.FileType := FSHGetFileInfoRec^.FileType;
{ NT only half-assed supports the SHGetFileInfo...only if the ext is }
{ associated with a program. So we build it ourselves }
if FShellCache.Data.FileType = '' then
FShellCache.Data.FileType := AnsiUpperCase(ExtractFileExtW(NameForParsing)) + STR_FILE;
end else
FShellCache.Data.FileType := '';
Include(FShellCache.ShellCacheFlags, scFileType);
end;
Result := ShellCache.Data.FileType
end;
function TNamespace.GetFolder: Boolean;
// Ask the Folder if it is a Folder, as opposed to files. Folders can contain
// other objects.
begin
if not (scFolder in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_FOLDER, False) then
Include(FShellCache.Data.Attributes, caFolder);
Include(FShellCache.ShellCacheFlags, scFolder);
end;
Result := caFolder in ShellCache.Data.Attributes;
end;
function TNamespace.GetFreePIDLOnDestroy: Boolean;
begin
Result := nsFreePIDLOnDestroy in States
end;
function TNamespace.GetGhosted: Boolean;
// Ask the Folder if it is a ghosted file object. Partially encapsulates the
// IShellFolder.GetAttributesOf function.
begin
if not (scGhosted in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_GHOSTED, False) then
Include(FShellCache.Data.Attributes, caGhosted);
Include(FShellCache.ShellCacheFlags, scGhosted);
end;
Result := caGhosted in ShellCache.Data.Attributes
end;
function TNamespace.GetHasPropSheet: Boolean;
begin
Result := TestAttributesOf(SFGAO_HASPROPSHEET, False);
end;
function TNamespace.GetHasSubFolder: Boolean;
begin
Result := TestAttributesOf(SFGAO_HASSUBFOLDER, False);
end;
function TNamespace.GetHidden: Boolean;
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_HIDDEN <> 0
else
Result := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_HIDDEN <> 0
else
Result := False;
end
end;
function TNamespace.GetIconIndexChanged: Boolean;
begin
Result := nsIconIndexChanged in States
end;
function TNamespace.GetIconIndex(OpenIcon: Boolean; IconSize: TIconSize; ForceLoad: Boolean = True): integer;
{ Retrieve the Icon Index either selected or not selected (open folder or }
{ closed folder) }
function GetIconByIShellIcon(AnOpenIcon: Boolean; Size: TIconSize; var Index: integer): Boolean;
var
Flags: Longword;
begin
Result := False;
if Assigned(ShellIconInterface) then
begin
Flags := 0;
if Size = icLarge then
Flags := GIL_FORSHELL;
if AnOpenIcon then
Flags := GIL_OPENICON or Flags;
Result := ShellIconInterface.GetIconOf(RelativePIDL, Flags, Index) = NOERROR
end
end;
procedure GetIconBySHGetFileInfo(AnOpenIcon: Boolean; Size: TIconSize; var Index: Integer);
{ A little undocumented trick. If you use the SHGFI_USEFILEATTRIBUTES flags }
{ the SHGetFileInfo function does not fully access the object and is much }
{ faster. }
{ UPDATE: Unfortunatly this does not work well in Win98 :^( }
var
Flags: integer;
InfoA: TSHFileInfoA;
InfoW: TSHFileInfoW;
begin
Flags := SHGFI_PIDL or SHGFI_SYSICONINDEX or SHGFI_SHELLICONSIZE;
if IconSize = icLarge then
Flags := Flags or SHGFI_LARGEICON
else
Flags := Flags or SHGFI_SMALLICON;
if AnOpenIcon then
Flags := Flags or SHGFI_OPENICON;
if IsUnicode then
begin
FillChar(InfoW, SizeOf(InfoW), #0);
if SHGetFileInfoW_VST(PWideChar(AbsolutePIDL), 0, InfoW, SizeOf(InfoW), Flags) <> 0 then
Index := InfoW.iIcon
else
Index := 0
end else
begin
FillChar(InfoA, SizeOf(InfoA), #0);
if SHGetFileInfoA(PChar(AbsolutePIDL), 0, InfoA, SizeOf(InfoA), Flags) <> 0 then
Index := InfoA.iIcon
else
Index := 0
end
end;
function GetIcon(IsOpen: Boolean; IconSize: TIconSize): integer;
begin
if not GetIconByIShellIcon(IsOpen, IconSize, Result) then
GetIconBySHGetFileInfo(IsOpen, IconSize, Result);
end;
begin
if not OpenIcon then
begin
if not (scSmallIcon in ShellCache.ShellCacheFlags) or ForceLoad then
begin
FShellCache.Data.SmallIcon := GetIcon(False, icSmall);
Include(FShellCache.ShellCacheFlags, scSmallIcon);
end;
Result := ShellCache.Data.SmallIcon;
end else
begin
if not (scSmallOpenIcon in ShellCache.ShellCacheFlags) or ForceLoad then
begin
{ Some Control panel icons return 0 for open but have icons for not open }
{ and it looks bad to show the default icon when the item is selected. }
{ In NT4 some ControlPanel icons are the Mouse icons when selected! }
if Assigned(Parent) and Parent.IsControlPanel then
FShellCache.Data.SmallOpenIcon := GetIcon(False, icSmall)
else begin
FShellCache.Data.SmallOpenIcon := GetIcon(True, icSmall);
{ If it is 0 then try the normal icon }
if FShellCache.Data.SmallOpenIcon = 0 then
FShellCache.Data.SmallOpenIcon := GetIcon(False, icSmall)
end;
Include(FShellCache.ShellCacheFlags, scSmallOpenIcon)
end;
Result := ShellCache.Data.SmallOpenIcon;
end;
end;
function TNamespace.GetInfoTip: WideString;
{ Retrieves the text from the IInfoTip interface in Win2k. }
var
Buffer: PWideChar;
begin
Result := '';
if Assigned(QueryInfoInterface) then
begin
if QueryInfoInterface.GetInfoTip(0, Buffer) = S_OK then
begin
Result := Buffer;
PIDLMgr.FreeOLEStr(Buffer);
end;
end;
end;
function TNamespace.GetLastAccessTime: WideString;
{ GETTER: Last Access time of the file. }
begin
if not (scLastAccessTime in ShellCache.ShellCacheFlags) then
begin
{ The Shell only caches the LastWrite time in the PIDL }
GetFileTimes;
if IsUnicode then
begin
if Assigned(FWin32FindDataW) and FileSystem then
FShellCache.Data.LastAccessTime := ConvertTFileTimeToLocalStr(FWin32FindDataW^.ftLastAccessTime)
else
FShellCache.Data.LastAccessTime := '';
end else
begin
if Assigned(FWin32FindDataA) and FileSystem then
FShellCache.Data.LastAccessTime := ConvertTFileTimeToLocalStr(FWin32FindDataA^.ftLastAccessTime)
else
FShellCache.Data.LastAccessTime := '';
end;
Include(FShellCache.ShellCacheFlags, scLastAccessTime);
end;
Result := FShellCache.Data.LastAccessTime
end;
function TNamespace.GetLastAccessDateTime: TDateTime;
begin
Result := ConvertFileTimetoDateTime(LastAccessTimeRaw)
end;
function TNamespace.GetLastAccessTimeRaw: TFileTime;
begin
{ The Shell only caches the LastWrite time in the PIDL }
if IsUnicode then
begin
GetFileTimes;
if Assigned(FWin32FindDataW) then
Result := FWin32FindDataW^.ftLastAccessTime
else
FillChar(Result, SizeOf(Result), #0);
end else
begin
GetFileTimes;
if Assigned(FWin32FindDataA) then
Result := FWin32FindDataA^.ftLastAccessTime
else
FillChar(Result, SizeOf(Result), #0);
end
end;
function TNamespace.GetLastWriteTime: WideString;
{ GETTER: Last write time for the file. }
begin
if not (scLastWriteTime in ShellCache.ShellCacheFlags) then
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
FShellCache.Data.LastWriteTime := ConvertTFileTimeToLocalStr(FWin32FindDataW^.ftLastWriteTime)
else
FShellCache.Data.LastWriteTime := '';
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
FShellCache.Data.LastWriteTime := ConvertTFileTimeToLocalStr(FWin32FindDataA^.ftLastWriteTime)
else
FShellCache.Data.LastWriteTime := '';
end;
Include(FShellCache.ShellCacheFlags, scLastWriteTime);
end;
Result := FShellCache.Data.LastWriteTime
end;
function TNamespace.GetLastWriteDateTime: TDateTime;
begin
Result := ConvertFileTimetoDateTime(LastWriteTimeRaw)
end;
function TNamespace.GetLastWriteTimeRaw: TFileTime;
{ GETTER: Last Write time for the file in raw TFileTime format. }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) then
Result := FWin32FindDataW^.ftLastWriteTime
else
FillChar(Result, SizeOf(Result), #0);
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) then
Result := FWin32FindDataA^.ftLastWriteTime
else
FillChar(Result, SizeOf(Result), #0);
end
end;
function TNamespace.GetLink: Boolean;
begin
if not (scLink in ShellCache.ShellCacheFlags) then
begin
if TestAttributesOf(SFGAO_LINK, False) then
Include(FShellCache.Data.Attributes, caLink);
Include(FShellCache.ShellCacheFlags, scLink);
end;
Result := caLink in ShellCache.Data.Attributes
end;
function TNamespace.GetNameAddressbar: WideString;
begin
Result := DisplayNameOf(SHGDN_FORADDRESSBAR or SHGDN_NORMAL)
end;
function TNamespace.GetNameAddressbarInFolder: WideString;
begin
Result := DisplayNameOf(SHGDN_INFOLDER or SHGDN_FORADDRESSBAR)
end;
function TNamespace.GetNameForEditing: WideString;
begin
Result := DisplayNameOf(SHGDN_FOREDITING)
end;
function TNamespace.GetNameForEditingInFolder: WideString;
begin
Result := DisplayNameOf(SHGDN_FOREDITING or SHGDN_INFOLDER)
end;
function TNamespace.GetNameForParsing: WideString;
begin
// Early versions of Windows returned "Desktop" instead of the full path
if IsDesktop then
Result := PhysicalDesktopFolder.NameForParsing
else
Result := DisplayNameOf(SHGDN_FORPARSING or SHGDN_NORMAL)
end;
function TNamespace.GetNameForParsingInFolder: WideString;
begin
// Early versions of Windows returned "Desktop" instead of the full path
if IsDesktop then
Result := PhysicalDesktopFolder.NameForParsingInFolder
else
Result := DisplayNameOf(SHGDN_INFOLDER or SHGDN_FORPARSING)
end;
function TNamespace.GetNameInFolder: WideString;
begin
if not (scInFolderName in ShellCache.ShellCacheFlags) then
begin
FShellCache.Data.InFolderName := DisplayNameOf(SHGDN_INFOLDER);
Include(FShellCache.ShellCacheFlags, scInFolderName)
end;
Result := FShellCache.Data.InFolderName
end;
function TNamespace.GetNameNormal: WideString;
begin
if not (scNormalName in ShellCache.ShellCacheFlags) then
begin
FShellCache.Data.NormalName := DisplayNameOf(SHGDN_NORMAL);
Include(FShellCache.ShellCacheFlags, scNormalName)
end;
Result := FShellCache.Data.NormalName
end;
function TNamespace.GetNameParseAddress: WideString;
begin
if not (scParsedName in ShellCache.ShellCacheFlags) then
begin
FShellCache.Data.ParsedName := DisplayNameOf(SHGDN_FORADDRESSBAR or SHGDN_FORPARSING);
Include(FShellCache.ShellCacheFlags, scParsedName)
end;
Result := FShellCache.Data.ParsedName
end;
function TNamespace.GetNameParseAddressInFolder: WideString;
begin
Result := DisplayNameOf(SHGDN_FORADDRESSBAR or SHGDN_FORPARSING or SHGDN_INFOLDER)
end;
function TNamespace.GetNewContent: Boolean;
{ GETTER: Does this namespace contain new content? }
begin
Result := TestAttributesOf(SFGAO_NEWCONTENT, False);
end;
function TNamespace.GetNonEnumerated: Boolean;
{ GETTER: Is this namespace able to be enumerated? }
begin
Result := TestAttributesOf(SFGAO_NONENUMERATED, False);
end;
function TNamespace.GetNormal: Boolean;
{ GETTER: Does the file attributes contain Normal? }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_NORMAL <> 0
else
Result := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_NORMAL <> 0
else
Result := False;
end
end;
function TNamespace.GetOffLine: Boolean;
{ GETTER: Does the file attributes contain OffLine? }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_OFFLINE <> 0
else
Result := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_OFFLINE <> 0
else
Result := False;
end
end;
function TNamespace.GetImage: TBitmap;
begin
Result := FImage;
end;
procedure TNamespace.InvalidateThumbImage;
begin
FreeAndNIL(FImage);
Exclude(FStates, nsThreadedImageLoaded);
Exclude(FStates, nsThreadedImageLoading);
end;
function TNamespace.SubFoldersEx(Flags: Longword): Boolean;
begin
Result := InternalSubItems(Flags)
end;
function TNamespace.SubItemsEx(Flags: Longword): Boolean;
begin
Result := InternalSubItems(Flags)
end;
function TNamespace.GetOverlayIconIndex: Integer;
begin
if Assigned(Parent) then
begin
if Assigned(Parent.ShellIconOverlayInterface) then
begin
if FShellCache.Data.OverlayIconIndex < 0 then
begin
if Parent.ShellIconOverlayInterface.GetOverlayIconIndex(FRelativePIDL, FShellCache.Data.OverlayIconIndex) <> S_OK then
FShellCache.Data.OverlayIconIndex := -1;
end
end
end;
Result := FShellCache.Data.OverlayIconIndex
end;
function TNamespace.GetOverlayIndex: Integer;
begin
if Assigned(Parent) then
begin
if Assigned(Parent.ShellIconOverlayInterface) then
begin
if FShellCache.Data.OverlayIndex < 0 then
begin
if Parent.ShellIconOverlayInterface.GetOverlayIndex(FRelativePIDL, FShellCache.Data.OverlayIndex) <> S_OK then
FShellCache.Data.OverlayIndex := -1;
end
end
end;
Result := FShellCache.Data.OverlayIndex
end;
function TNamespace.GetCanMoniker: Boolean;
begin
Result := TestAttributesOf(SFGAO_CANMONIKER, False)
end;
function TNamespace.GetEncrypted: Boolean;
begin
Result := TestAttributesOf(SFGAO_ENCRYPTED, False)
end;
function TNamespace.GetHasStorage: Boolean;
begin
Result := TestAttributesOf(SFGAO_HASSTORAGE, False)
end;
function TNamespace.GetIsSlow: Boolean;
begin
Result := TestAttributesOf(SFGAO_ISSLOW, False)
end;
function TNamespace.GetStorage: Boolean;
begin
Result := TestAttributesOf(SFGAO_STORAGE, False)
end;
function TNamespace.GetStorageAncestor: Boolean;
begin
Result := TestAttributesOf(SFGAO_STORAGEANCESTOR, False)
end;
function TNamespace.GetStream: Boolean;
begin
Result := TestAttributesOf(SFGAO_STREAM, False)
end;
function TNamespace.GetParentShellDetailsInterface: {$IFNDEF CPPB_6_UP}IShellDetails{$ELSE}IShellDetailsBCB6{$ENDIF};
begin
{ This forces the Parent to be created if necessary }
if Assigned(ParentShellFolder) then
Result := Parent.ShellDetailsInterface
else
Result := ShellDetailsInterface
end;
function TNamespace.GetParentShellFolder: IShellFolder;
var
P: PItemIDList;
begin
Result := nil;
// 08.31.02
// Going to try to allow the Parent to persist if the namespace creates it itself.
// This is called a LOT more than I thought expecially for the ExplorerListview
if Assigned(Parent) then
begin
{$IFDEF VIRTUALNAMESPACES}
// If we are a RootNVS then we always get the Hook IShellFolder for the parent
// else get the parents IShellFolder
if IsRootVirtualNamespace then
begin
if not Assigned(Parent.FShellFolderHook) then
Parent.FShellFolderHook := NamespaceExtensionFactory.VirtualHook(Parent.AbsolutePIDL);
Result := Parent.FShellFolderHook
end else
Result := Parent.ShellFolder
{$ELSE}
Result := Parent.ShellFolder
{$ENDIF}
end else
if not IsDesktop then
begin
if Assigned(Parent) then
FreeAndNil(FParent);
P := PIDLMgr.CopyPIDL(AbsolutePIDL);
FParent := TNamespace.Create(PIDLMgr.StripLastID(P), nil);
if Assigned(Parent) then
begin
{$IFDEF VIRTUALNAMESPACES}
if IsRootVirtualNamespace then
begin
if not Assigned(Parent.FShellFolderHook) then
Parent.FShellFolderHook := NamespaceExtensionFactory.VirtualHook(Parent.AbsolutePIDL);
Result := Parent.FShellFolderHook
end else
Result := Parent.ShellFolder;
{$ELSE}
Result := Parent.ShellFolder;
{$ENDIF}
{ Since we created the parent we own it in case we have to destroy it in }
{ our destructor. }
Include(FStates, nsOwnsParent);
end
end else
Result := ShellFolder
end;
function TNamespace.GetParentShellFolder2: IShellFolder2;
begin
{ This flag keeps us from constantly trying to get FShellFolder2 if it is not }
{ supported by the namespace. }
{ This forces the Parent to be created if necessary }
if Assigned(ParentShellFolder) then
Result := Parent.ShellFolder2
else
Result := ShellFolder2
end;
function TNamespace.GetQueryInfoInterface: IQueryInfo;
var
Found: Boolean;
begin
if not Assigned(FQueryInfoInterface) then
begin
Found := False;
if Assigned(ParentShellFolder) then
begin
Found := ParentShellFolder.GetUIObjectOf(0, 1, FRelativePIDL,
IQueryInfo, nil, Pointer(FQueryInfoInterface)) = NOERROR;
end;
if not Found and Assigned(ShellFolder) then
begin
Found := ShellFolder.CreateViewObject(0, IQueryInfo,
Pointer(FQueryInfoInterface)) = NOERROR;
end;
if not Found and IsDesktop then
FQueryInfoInterface := PhysicalDesktopFolder.QueryInfoInterface;
end;
Result := FQueryInfoInterface
end;
function TNamespace.GetReadOnly: Boolean;
{ GETTER: Is this namespace ReadOnly? }
begin
Result := TestAttributesOf(SFGAO_READONLY, False);
end;
function TNamespace.GetReadOnlyFile: Boolean;
{ GETTER: Does the file attributes contain ReadOnly? }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_READONLY <> 0
else
Result := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_READONLY <> 0
else
Result := False;
end
end;
function TNamespace.GetRemovable: Boolean;
{ GETTER: Is this a removeable object? }
begin
Result := TestAttributesOf(SFGAO_REMOVABLE, False);
end;
function TNamespace.GetShellDetailsInterface: {$IFNDEF CPPB_6_UP}IShellDetails{$ELSE}IShellDetailsBCB6{$ENDIF};
var
Found: Boolean;
{$IFDEF VIRTUALNAMESPACES}
Dummy: PItemIDList;
Folder: IShellFolder;
{$ENDIF}
begin
{ This flag keeps us from constantly trying to get IShellDetails if it is not }
{ supported by the namespace. }
if (nsShellDetailsSupported in States) and not Assigned(FShellDetailsInterface) then
begin
Found := False;
{$IFDEF VIRTUALNAMESPACES}
// If the namespace (which is real) is Hard Hooked then we get the Details
// interface from our VNS implmementation. It knows that it is the HardHooked
// view by looking at the Child PIDL, it will be nil in this case
if IsHardHookedNamespace then
begin
Folder := NamespaceExtensionFactory.VirtualHook(AbsolutePIDL);
if Assigned(Folder) then
begin
Dummy := nil;
Found := Folder.GetUIObjectOf(0, 1, Dummy, IID_IShellDetails, nil,
Pointer(FShellDetailsInterface)) = NOERROR;
end
end;
{$ENDIF}
if not Found and Assigned(ShellFolder) then
Found := ShellFolder.CreateViewObject(0, IID_IShellDetails, Pointer(FShellDetailsInterface)) = NOERROR;
if not Found and Assigned(ParentShellFolder) then
Found := ParentShellFolder.GetUIObjectOf(0, 1, FRelativePIDL, IID_IShellDetails, nil,
Pointer(FShellDetailsInterface)) = NOERROR;
if Found then
Include(FStates, nsShellDetailsSupported)
else
begin
Exclude(FStates, nsShellDetailsSupported);
FShellDetailsInterface := nil
end
end;
Result := FShellDetailsInterface;
end;
function TNamespace.GetShellIconInterface: IShellIcon;
var
Found: Boolean;
begin
if not Assigned(FShellIconInterface) then
begin
Found := False;
if Assigned(ParentShellFolder) then
Found := ParentShellFolder.QueryInterface(IID_IShellIcon,
Pointer(FShellIconInterface)) <> E_NOINTERFACE;
if not Found then
FShellIconInterface := nil
end;
Result := FShellIconInterface
end;
function TNamespace.GetShellFolder: IShellFolder;
begin
if not Assigned(FShellFolder) then
begin
if not Assigned(FShellFolder) then
{$IFDEF VIRTUALNAMESPACES}
FShellFolder := NamespaceExtensionFactory.BindToVirtualObject(AbsolutePIDL)
{$ELSE}
if PIDLMgr.IsDesktopFolder(AbsolutePIDL) then
SHGetDesktopFolder(FShellFolder)
else
if Assigned(ParentShellFolder) then
begin
if not Succeeded(ParentShellFolder.BindToObject(FRelativePIDL, nil, IID_IShellFolder, Pointer(FShellFolder))) then
FShellFolder := nil
end else
FShellFolder := nil
{$ENDIF}
end;
Result := FShellFolder
end;
function TNamespace.GetShellFolder2: IShellFolder2;
begin
{ This flag keeps us from constantly trying to get FShellFolder2 if it is not }
{ supported by the namespace. }
{$IFDEF VIRTUALNAMESPACES}
if (nsShellFolder2Supported in States) and not Assigned(FShellFolder2) and not IsHardHookedNamespace then
{$ELSE}
if (nsShellFolder2Supported in States) and not Assigned(FShellFolder2) then
{$ENDIF}
begin
if Assigned(ShellFolder) then
if ShellFolder.QueryInterface(IID_IShellFolder2, Pointer(FShellFolder2)) = E_NOINTERFACE
then begin
FShellFolder2 := nil;
Exclude(FStates, nsShellFolder2Supported)
end else
Include(FStates, nsShellFolder2Supported)
end;
Result := FShellFolder2;
end;
function TNamespace.GetShellLink: TVirtualShellLink;
begin
if not Assigned(FShellLink) then
FShellLink := TVirtualShellLink.Create(nil);
FShellLink.ReadLink(NameParseAddress);
Result := FShellLink
end;
function TNamespace.GetSizeOfFile: WideString;
{ GETTER: Get the size of the file in string format. }
begin
if not (scFileSize in ShellCache.ShellCacheFlags) then
begin
if not Folder then
begin
FShellCache.Data.FileSize := AddCommas(IntToStrW(SizeOfFileInt64));
Include(FShellCache.ShellCacheFlags, scFileSize);
end else
FShellCache.Data.FileSize := ''
end;
Result := ShellCache.Data.FileSize
end;
function TNamespace.GetSizeOfFileDiskUsage: WideString;
var
Size: Int64;
Drive: string;
DriveW: WideString;
SectorsPerCluster,
BytesPerSector,
FreeClusters,
TotalClusters,
BytesPerCluster,
i : DWORD;
ValidData: Boolean;
begin
if not Folder then
begin
Size := SizeOfFileInt64;
DriveW := ExtractFileDriveW(Self.NameForParsing) + '\';
Drive := DriveW;
if DirExistsW(Drive) then
begin
if IsUnicode then
ValidData := GetDiskFreeSpaceW(
PWideChar( DriveW), SectorsPerCluster, BytesPerSector, FreeClusters, TotalClusters)
else
if not IsWin95_SR1 then
ValidData := GetDiskFreeSpaceFAT32(
PChar( Drive), SectorsPerCluster, BytesPerSector, FreeClusters, TotalClusters)
else
ValidData := GetDiskFreeSpaceA(
PChar( Drive), SectorsPerCluster, BytesPerSector, FreeClusters, TotalClusters);
if ValidData then
begin
BytesPerCluster := SectorsPerCluster * BytesPerSector;
if BytesPerCluster <> 0 then
begin
{ In the *rare* instance where the actual size is equal to multiple of }
{ the sector size don't do the math :^) }
if Size mod BytesPerCluster <> 0 then
i := 1
else
i := 0;
Result := AddCommas(IntToStrW(BytesPerCluster *(Size div BytesPerCluster + i)))
end else
Result := SizeOfFile
end else
Result := SizeOfFile
end else
Result := SizeOfFile
end;
end;
function TNamespace.GetSizeOfFileInt64: Int64;
{ GETTER: Get the file size in bytes. }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
with FWin32FindDataW^ do
Result := Int64(nFileSizeLow) + nFileSizeHigh shl 32
else
Result := 0
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
with FWin32FindDataA^do
Result := Int64(nFileSizeLow) + nFileSizeHigh shl 32
else
Result := 0
end
end;
function TNamespace.GetSizeOfFileKB: WideString;
{ GETTER: Get the file size in Explorer KiloByte format. }
begin
if not (scFileSizeKB in ShellCache.ShellCacheFlags) then
begin
if not Folder then
begin
FShellCache.Data.FileSizeKB := Format(STR_FILE_SIZE_IN_KB, [Int((SizeOfFileInt64) / 1024)]);
if FShellCache.Data.FileSizeKB = STR_ZERO_KB then
FShellCache.Data.FileSizeKB := STR_ONE_KB;
Include(FShellCache.ShellCacheFlags, scFileSizeKB)
end else
FShellCache.Data.FileSizeKB := '';
end;
Result := FShellCache.Data.FileSizeKB;
end;
function TNamespace.GetShare: Boolean;
begin
Result := TestAttributesOf(SFGAO_SHARE, False);
end;
procedure TNamespace.GetSHFileInfo;
{ Retrieves and caches the some information about the namespace with }
{ ShGetFileInfo. }
var
InfoA: TSHFileInfoA;
InfoW: TSHFileInfoW;
begin
if not Assigned(FSHGetFileInfoRec) then
begin
if IsUnicode then
begin
GetMem(FSHGetFileInfoRec, SizeOf(FSHGetFileInfoRec^));
Initialize(FSHGetFileInfoRec^.FileType);
if Assigned(FSHGetFileInfoRec) then
begin
SHGetFileInfoW_VST(PWideChar(AbsolutePIDL), 0, InfoW, SizeOf(InfoW), SHGFI_TYPENAME or SHGFI_PIDL);
FSHGetFileInfoRec^.FileType := InfoW.szTypeName;
{ NT only half-assed supports the SHGetFileInfo...only if the ext is }
{ associated with a program. So we build it ourselves }
if FSHGetFileInfoRec^.FileType = '' then
FSHGetFileInfoRec^.FileType := AnsiUpperCase(ExtractFileExtW(NameForParsing)) + STR_FILE;
end
end else
begin
GetMem(FSHGetFileInfoRec, SizeOf(FSHGetFileInfoRec^));
Initialize(FSHGetFileInfoRec^.FileType);
if Assigned(FSHGetFileInfoRec) then
begin
SHGetFileInfoA(PChar(AbsolutePIDL), 0, InfoA, SizeOf(InfoA), SHGFI_TYPENAME or SHGFI_PIDL);
FSHGetFileInfoRec^.FileType := InfoA.szTypeName;
{ NT only half-assed supports the SHGetFileInfo...only if the ext is }
{ associated with a program. So we build it ourselves }
if FSHGetFileInfoRec^.FileType = '' then
FSHGetFileInfoRec^.FileType := AnsiUpperCase(ExtractFileExtW(NameForParsing)) + STR_FILE;
end
end;
end;
end;
function TNamespace.GetShortFileName: WideString;
{ GETTER: Get the 8:3 short file name (DOS) }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
begin
Result := FWin32FindDataW^.cAlternateFileName;
if Result = '' then
Result := AnsiUpperCase(FWin32FindDataW^.CFileName)
end else
Result := '';
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
begin
Result := FWin32FindDataA^.cAlternateFileName;
if Result = '' then
Result := AnsiUpperCase(FWin32FindDataA^.CFileName)
end else
Result := '';
end
end;
function TNamespace.GetSubFolders: Boolean;
{ Tests to see if a namespace is a true folder and has at least one }
{ sub-namespace within it. }
begin
Result := InternalSubItems(SHCONTF_FOLDERS or SHCONTF_INCLUDEHIDDEN)
end;
function TNamespace.GetSubItems: Boolean;
{ Tests to see if a namespace is a true folder and has at least one }
{ sub-namespace within it. }
begin
Result := InternalSubItems(SHCONTF_FOLDERS or SHCONTF_NONFOLDERS or SHCONTF_INCLUDEHIDDEN)
end;
function TNamespace.GetSystem: Boolean;
{ GETTER: Does the file attributes contain System? }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_SYSTEM <> 0
else
Result := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_SYSTEM <> 0
else
Result := False;
end
end;
function TNamespace.GetTemporary: Boolean;
{ GETTER: Does the file attributes contain Temporary? }
begin
if IsUnicode then
begin
if not Assigned(FWin32FindDataW) then
GetDataFromIDList;
if Assigned(FWin32FindDataW) and FileSystem then
Result := FWin32FindDataW^.dwFileAttributes and FILE_ATTRIBUTE_TEMPORARY <> 0
else
Result := False;
end else
begin
if not Assigned(FWin32FindDataA) then
GetDataFromIDList;
if Assigned(FWin32FindDataA) and FileSystem then
Result := FWin32FindDataA^.dwFileAttributes and FILE_ATTRIBUTE_TEMPORARY <> 0
else
Result := False;
end
end;
function TNamespace.GetThreadedIconLoaded: Boolean;
begin
Result := nsThreadedIconLoaded in States
end;
function TNamespace.GetThreadIconLoading: Boolean;
begin
Result := nsThreadedIconLoading in States
end;
function TNamespace.GetShellIconOverlayInterface: IShellIconOverlay;
var
Found: Boolean;
begin
if (nsShellOverlaySupported in States) and not Assigned(FShellIconOverlayInterface) then
begin
Found := False;
if Assigned(ShellFolder) then
Found := ShellFolder.QueryInterface(IShellIconOverlay,
Pointer(FShellIconOverlayInterface)) <> E_NOINTERFACE;
if not Found then // Here we have to check again
begin
IF Assigned(ParentShellFolder) then
Found := ParentShellFolder.QueryInterface(IShellIconOverlay,
Pointer(FShellIconOverlayInterface)) <> E_NOINTERFACE;
end;
if not Found then
begin
Exclude(FStates, nsShellOverlaySupported);
FShellIconOverlayInterface := nil
end
end;
Result := FShellIconOverlayInterface
end;
{$IFDEF VIRTUALNAMESPACES}
function TNamespace.GetIsHookedNamespace: Boolean;
var
Index: Integer;
begin
if not (scHookedNamespace in ShellCache.ShellCacheFlags) then
begin
if NamespaceExtensionFactory.IsHookedPIDL(AbsolutePIDL, Index) then
Include(FShellCache.Data.Attributes, caHookedNamespace);
Include(FShellCache.ShellCacheFlags, scHookedNamespace);
end;
Result := caHookedNamespace in ShellCache.Data.Attributes
end;
function TNamespace.GetIsRootVirtualNamespace: Boolean;
begin
if not (scRootVirtualNamespace in ShellCache.ShellCacheFlags) then
begin
if NamespaceExtensionFactory.IsRootVirtualPIDL(AbsolutePIDL) then
Include(FShellCache.Data.Attributes, caRootVirtualNamespace);
Include(FShellCache.ShellCacheFlags, scRootVirtualNamespace);
end;
Result := caRootVirtualNamespace in ShellCache.Data.Attributes
end;
function TNamespace.GetIsVirtualHook: Boolean;
begin
if not (scVirtualHook in ShellCache.ShellCacheFlags) then
begin
if NamespaceExtensionFactory.IsVirtualPIDL(RelativePIDL) then
Include(FShellCache.Data.Attributes, caVirtualHook);
Include(FShellCache.ShellCacheFlags, scVirtualHook);
end;
Result := caVirtualHook in ShellCache.Data.Attributes
end;
function TNamespace.GetIsVirtualNamespace: Boolean;
begin
if not (scVirtualNamespace in ShellCache.ShellCacheFlags) then
begin
if NamespaceExtensionFactory.IsVirtualPIDL(RelativePIDL) then
Include(FShellCache.Data.Attributes, caVirtualNamespace);
Include(FShellCache.ShellCacheFlags, scVirtualNamespace);
end;
Result := caVirtualNamespace in ShellCache.Data.Attributes
end;
function TNamespace.GetIsHardHookedNamespace: Boolean;
begin
if not (scHardHookedNamespace in ShellCache.ShellCacheFlags) then
begin
if NamespaceExtensionFactory.IsHardHookedPIDL(AbsolutePIDL) then
Include(FShellCache.Data.Attributes, caHardHookedNamespace);
Include(FShellCache.ShellCacheFlags, scHardHookedNamespace);
end;
Result := caHardHookedNamespace in ShellCache.Data.Attributes
end;
{$ENDIF}
procedure TNamespace.HandleContextMenuMsg(Msg, wParam, lParam: Longint; var Result: LRESULT);
{ This is called when the ContextMenu calls back to its owner window to ask }
{ questions to implement the addition of icons to the menu. The messages sent }
{ to the owner window are: WM_INITMENUPOPUP, WM_DRAWITEM, or WM_MEASUREITEM. }
{ Which must be passed on to the ContextMenu2 interface to display items with }
{ icons. }
var
ContextMenu3: IContextMenu3;
begin
if Assigned(CurrentContextMenu2) then
if CurrentContextMenu2.QueryInterface(IContextMenu3, ContextMenu3) <> E_NOINTERFACE then
ContextMenu3.HandleMenuMsg2(Msg, wParam, lParam, Result)
else
CurrentContextMenu2.HandleMenuMsg(Msg, wParam, lParam);
end;
function TNamespace.InjectCustomSubMenu(Menu: HMenu; Caption: string; PopupMenu: TPopupMenu;
var SubMenu: HMenu): TMenuItemIDArray;
const
MENUMASK = MIIM_CHECKMARKS or MIIM_DATA or MIIM_ID or MIIM_STATE or MIIM_TYPE;
{ Searchs through the passed menu looking for an item identifer that is not }
{ currently being used. }
function FindUniqueMenuID(AMenu: HMenu; StartID: cardinal): cardinal;
var
ItemCount, i: integer;
Duplicate, Done: Boolean;
begin
ItemCount := GetMenuItemCount(Menu);
Duplicate := True;
Result := StartID;
while Duplicate do
begin
i := 0;
Done := False;
while (i < ItemCount) and not Done do
begin
Done := GetMenuItemID(Menu, i) = Result;
Inc(i);
end;
Duplicate := Done;
if Duplicate then
Inc(Result)
end;
end;
var
ItemCount, i: integer;
ItemInfo: TMenuItemInfo;
LastID: cardinal;
begin
Result := nil;
SubMenu := 0;
LastID := 0;
ItemCount := GetMenuItemCount(Menu);
SubMenu := CreatePopupMenu;
FillChar(ItemInfo, SizeOf(ItemInfo), #0);
ItemInfo.cbSize := SizeOf(ItemInfo);
ItemInfo.fmask := MIIM_TYPE;
ItemInfo.fType := MFT_SEPARATOR;
InsertMenuItem(Menu, ItemCount, True, ItemInfo);
FillChar(ItemInfo, SizeOf(ItemInfo), #0);
ItemInfo.cbSize := SizeOf(ItemInfo);
ItemInfo.fmask := MIIM_SUBMENU or MIIM_TYPE;
ItemInfo.hSubMenu := SubMenu;
ItemInfo.dwTypeData := PChar(Caption);
// Insert the Root Menu Item
if InsertMenuItem(Menu, ItemCount + 1, True, ItemInfo) then
begin
SetLength(Result, PopupMenu.Items.Count);
for i := PopupMenu.Items.Count - 1 downto 0 do
begin
FillChar(ItemInfo, SizeOf(ItemInfo), #0);
ItemInfo.cbSize := SizeOf(ItemInfo);
ItemInfo.fmask := MENUMASK;
if PopupMenu.Items[i].Caption <> '-' then
ItemInfo.fType := MFT_STRING
else
ItemInfo.fType := MFT_SEPARATOR;
if PopupMenu.Items[i].RadioItem then
ItemInfo.fType := ItemInfo.fType or MFT_RADIOCHECK;
if PopupMenu.BiDiMode = bdRightToLeft then
ItemInfo.fType := ItemInfo.fType or MFT_RIGHTJUSTIFY;
if PopupMenu.Items[i].Break = mbBreak then
ItemInfo.fType := ItemInfo.fType or MFT_MENUBREAK;
if PopupMenu.Items[i].Break = mbBarBreak then
ItemInfo.fType := ItemInfo.fType or MFT_MENUBARBREAK;
if PopupMenu.Items[i].Checked then
ItemInfo.fState := ItemInfo.fState or MFS_CHECKED
else
ItemInfo.fState := ItemInfo.fState or MFS_UNCHECKED;
if PopupMenu.Items[i].Default then
ItemInfo.fState := ItemInfo.fState or MFS_DEFAULT;
if PopupMenu.Items[i].Enabled then
ItemInfo.fState := ItemInfo.fState or MFS_ENABLED
else
ItemInfo.fState := ItemInfo.fState or MFS_DISABLED;
ItemInfo.wID := FindUniqueMenuID(Menu, LastID + 1);
LastID := ItemInfo.wID;
Result[i] := ItemInfo.wID;
// Store the TMenuItem so we can get it later
ItemInfo.dwItemData := Cardinal( PopupMenu.Items[i]);
if not( ItemInfo.fType and MFT_SEPARATOR <> 0) then
ItemInfo.dwTypeData := PChar(PopupMenu.Items[i].Caption);
InsertMenuItem(SubMenu, 0, True, ItemInfo)
end
end
end;
function TNamespace.InternalGetContextMenuInterface(PIDLArray: TRelativePIDLArray): IContextMenu;
var
Found: Boolean;
begin
Found := False;
CurrentContextMenu2 := nil; // Clear since not sure if it is avaiable yet
if Assigned(PIDLArray) then
begin
if Assigned(ParentShellFolder) then
begin
Found := Succeeded(ParentShellFolder.GetUIObjectOf(0,
Length(PIDLArray), PItemIDList( PIDLArray[0]),
IID_IContextMenu, nil, Pointer(Result)))
end;
if not Found and Assigned(ShellFolder) and (Length(PIDLArray) = 1) then
begin
Found := ShellFolder.CreateViewObject(0, IID_IContextMenu,
Pointer(Result)) = NOERROR;
end;
if not Found then
Result := nil
end else
Result := nil
end;
function TNamespace.InternalGetDataObjectInterface(PIDLArray: TRelativePIDLArray): IDataObject;
{ Creates an IDataObject using the passed relative PIDLs (actually siblings of }
{ the TNamespace) If a nil is passed for PIDLArray a single object based on }
{ TNamespace is created. }
var
Found: Boolean;
begin
if not Assigned(PIDLArray) then
begin
SetLength(PIDLArray, 1);
PIDLArray[0] := RelativePIDL
end;
Found := False;
if Assigned(PIDLArray) then
begin
if Assigned(ParentShellFolder) then
begin
Found := ParentShellFolder.GetUIObjectOf(0,
Length(PIDLArray), PItemIDList( PIDLArray[0]),
IDataObject, nil, Pointer(Result)) = NOERROR;
end;
if not Found and Assigned(ShellFolder) and (Length(PIDLArray) = 1) then
begin
Found := ShellFolder.CreateViewObject(0, IDataObject,
Pointer(Result)) = NOERROR;
end;
if not Found then
Result := nil
end else
Result := nil
end;
function TNamespace.InternalShowContextMenu(Owner: TWinControl;
ContextMenuCmdCallback: TContextMenuCmdCallback;
ContextMenuShowCallback: TContextMenuShowCallback;
ContextMenuAfterCmdCallback: TContextMenuAfterCmdCallback;
PIDLArray: TRelativePIDLArray; Position: PPoint; CustomShellSubMenu: TPopupMenu;
CustomSubMenuCaption: WideString; ForceFromDesktop: Boolean): Boolean;
// Displays the ContextMenu of the namespace.
const
MaxVerbLen = 128;
var
Menu: hMenu;
InvokeInfo: TCMInvokeCommandInfoEx;
MenuCmd: Cardinal;
x, y, i: integer;
OldErrorMode: integer;
VerbA: string;
VerbW: WideString;
GenericVerb: Pointer;
Handled, AllowShow: Boolean;
Flags: Longword;
ContextMenu: IContextMenu;
ContextMenu2: IContextMenu2;
ContextMenu3: IContextMenu3;
MenuIDs: TMenuItemIDArray;
ItemInfo: TMenuItemInfo;
SubMenu: HMenu;
Desktop: IShellFolder;
begin
MenuIDs := nil;
Result := False;
FOldWndProcForContextMenu := Owner.WindowProc;
try
// Hook the owner for the Window message for owner draw menus like
// Send To..
Owner.WindowProc := WindowProcForContextMenu;
if Assigned(PIDLArray) then
begin
ContextMenu := nil;
ContextMenu2 := nil;
ContextMenu3 := nil;
Result := False;
if Assigned(Position) then
begin
x := Position.x;
y := Position.y
end else
begin
x := Mouse.CursorPos.X; // Snag these fast. The mouse can move a fair amount
y := Mouse.CursorPos.Y; // before the popup menu is shown.
end;
FillChar(InvokeInfo, SizeOf(InvokeInfo), #0);
Menu := CreatePopupMenu;
OldErrorMode := SetErrorMode(SEM_FAILCRITICALERRORS or SEM_NOOPENFILEERRORBOX);
try
{ The application must handle a rename, rename makes no sense for more than 1 item }
if Assigned(ContextMenuCmdCallback) and (Length(PIDLArray) = 1) then
Flags := CMF_CANRENAME or CMF_NORMAL or CMF_EXPLORE
else
Flags := CMF_NORMAL or CMF_EXPLORE;
if GetKeyState(VK_SHIFT) and $8000 <> 0 then
Flags := Flags or CMF_EXTENDEDVERBS;
if ForceFromDesktop then
begin
// In this case PIDLArray is AbsolutePIDLs
SHGetDesktopFolder(Desktop);
Desktop.GetUIObjectOf(0, Length(PIDLArray), PItemIDList(PIDLArray[0]), IID_IContextMenu, nil, Pointer(ContextMenu));
end else
begin
if Assigned(PIDLArray) then
ContextMenu := InternalGetContextMenuInterface(PIDLArray)
else
ContextMenu := ContextMenuInterface;
end;
CurrentContextMenu := ContextMenu;
CurrentContextMenu2 := nil; // not sure it is available yet
if Assigned(ContextMenu) then
begin
if ContextMenu.QueryInterface(IContextMenu3, Pointer(ContextMenu3)) = E_NOINTERFACE then
begin
if ContextMenu.QueryInterface(IID_IContextMenu2, Pointer(ContextMenu2)) <> E_NOINTERFACE then
CurrentContextMenu2 := ContextMenu2;
end else
CurrentContextMenu2 := ContextMenu3;
if Assigned(ContextMenu3) then
ContextMenu3.QueryContextMenu(Menu, 0, 1, $7FFF, Flags)
else
if Assigned(ContextMenu2) then
ContextMenu2.QueryContextMenu(Menu, 0, 1, $7FFF, Flags)
else
if Assigned(ContextMenu) then
ContextMenu.QueryContextMenu(Menu, 0, 1, $7FFF, Flags);
// Inject our custom menu item
if Assigned(CustomShellSubMenu) then
MenuIDs := InjectCustomSubMenu(Menu, CustomSubMenuCaption, CustomShellSubMenu, SubMenu);
AllowShow := True;
if Assigned(ContextMenuShowCallback) then
ContextMenuShowCallback(Self, Menu, AllowShow);
if AllowShow then
MenuCmd := Cardinal( TrackPopupMenuEx(
Menu,
TPM_LEFTALIGN or TPM_RETURNCMD or TPM_RIGHTBUTTON,
x, y, Owner.Handle, nil))
else
MenuCmd := 0;
if MenuCmd <> 0 then
begin
if IsUnicode then
begin
SetLength(VerbW, MaxVerbLen);
GenericVerb := @VerbW[1];
Flags := GCS_VERBW
end else
begin
SetLength(VerbA, MaxVerbLen);
GenericVerb := @VerbA[1];
Flags := GCS_VERBA
end;
if Assigned(ContextMenu3) then
Result := Succeeded(ContextMenu3.GetCommandString(MenuCmd-1, Flags, nil, GenericVerb, MaxVerbLen))
else
if Assigned(ContextMenu2) then
Result := Succeeded(ContextMenu2.GetCommandString(MenuCmd-1, Flags, nil, GenericVerb, MaxVerbLen))
else
if Assigned(ContextMenu) then
Result := Succeeded(ContextMenu.GetCommandString(MenuCmd-1, Flags, nil, GenericVerb, MaxVerbLen));
if IsUnicode then
SetLength(VerbW, StrLenW(PWideChar( VerbW)))
else begin
SetLength(VerbA, StrLen(PChar( VerbA)));
VerbW := VerbA
end;
if not Result then
VerbW := STR_UNKNOWNCOMMAN;
Handled := False;
for i := 0 to Length(MenuIDs) - 1 do
begin
if MenuCmd = MenuIDs[i] then
begin
if SubMenu <> 0 then
begin
Handled := True;
FillChar(ItemInfo, SizeOf(ItemInfo), #0);
ItemInfo.cbSize := SizeOf(TMenuItemInfo);
ItemInfo.fMask := MIIM_DATA;
GetMenuItemInfo(SubMenu, i, True, ItemInfo);
if ItemInfo.dwItemData <> 0 then
TMenuItem(ItemInfo.dwItemData).Click
end
end
end;
if not Handled then
if Assigned(ContextMenuCmdCallback) then
ContextMenuCmdCallBack(Self, VerbW, MenuCmd, Handled);
if not Handled then
begin
FillChar(InvokeInfo, SizeOf(InvokeInfo), #0);
with InvokeInfo do
begin
{ For some reason the lpVerbW won't work }
lpVerb := MakeIntResourceA(MenuCmd-1);
if IsUnicode then
begin
fMask := CMIC_MASK_UNICODE;
lpVerbW := MakeIntResourceW(MenuCmd-1)
end;
// Win95 get confused if size = TCMInvokeCommandInfoEx
if IsUnicode then
cbSize := SizeOf(TCMInvokeCommandInfoEx)
else
cbSize := SizeOf(TCMInvokeCommandInfo);
hWnd := Application.Handle;
nShow := SW_SHOWNORMAL;
end;
if Assigned(ContextMenu3) then
Result := Succeeded(ContextMenu3.InvokeCommand(InvokeInfo))
else
if Assigned(ContextMenu2) then
Result := Succeeded(ContextMenu2.InvokeCommand(InvokeInfo))
else
if Assigned(ContextMenu) then
Result := Succeeded(ContextMenu.InvokeCommand(InvokeInfo));
if Assigned(ContextMenuAfterCmdCallback) then
ContextMenuAfterCmdCallback(Self, VerbW, MenuCmd, Result);
end
end
end;
finally
{ Don't access any properties or field of the object. If the verb is }
{ 'delete' the component using this class could have freed the instance }
{ of the object through a ShellNotifyRegister or some other way. }
DestroyMenu(Menu);
SetErrorMode(OldErrorMode);
CurrentContextMenu := nil;
CurrentContextMenu2 := nil; // not sure it is available yet
end
end
finally
Owner.WindowProc := FOldWndProcForContextMenu;
FOldWndProcForContextMenu := nil;
end
end;
function TNamespace.InternalSubItems(Flags: Longword): Boolean;
{ Tests to see if a namespace is a true folder and has at least one }
{ sub-namespace within it. }
var
Enum: IEnumIDList;
Fetched: Longword;
Item: PItemIDList;
begin
Result := False;
{ The recycle bin enumerates slow if it is full. VT will InitNode for various }
{ reasons eventhough the node is not expanded. We will always assume there is }
{ is something in the bin. If not when it is clicked it will clear the "+" }
if IsRecycleBin then
Result := True
else
// if ILIsParent(HistoryFolder.AbsolutePIDL, AbsolutePIDL, False) then
// Result := True
// else
begin
if Folder and Assigned(ShellFolder) then
begin
ShellFolder.EnumObjects(0, Flags, Enum);
if Assigned(Enum) then
Result := Enum.Next(1, Item, Fetched) = NOERROR
end
end
end;
procedure TNamespace.InvalidateCache;
{ Forces the class to reload any cached data the next time it is retrieved. }
begin
FShellCache.Data.InFolderName := '';
FShellCache.Data.NormalName := '';
FShellCache.Data.ParsedName := '';
FShellCache.Data.SmallIcon := -1;
FShellCache.Data.SmallOpenIcon := -1;
FShellCache.Data.OverlayIndex := -1;
FShellCache.Data.OverlayIconIndex := -1;
FShellCache.Data.CreationTime := '';
FShellCache.Data.LastAccessTime := '';
FShellCache.Data.LastWriteTime := '';
FShellCache.Data.FileSize := '';
FShellCache.Data.FileSizeKB := '';
FShellCache.Data.FileType := '';
FShellCache.Data.SupportedColumns := 0;
FShellCache.Data.Attributes := [];
FShellCache.ShellCacheFlags := [];
FreeAndNil(FExtractImage);
FreeAndNil(FShellLink);
InvalidateThumbImage
end;
procedure TNamespace.InvalidateNamespace(RefreshIcon: Boolean = True);
var
Icon1, Icon2: integer;
Icon1Initialized, Icon2Initialized: Boolean;
begin
Icon1 := 0;
Icon2 := 0;
Icon1Initialized := False;
Icon2Initialized := False;
if not RefreshIcon then
begin
if scSmallIcon in FShellCache.ShellCacheFlags then
begin
Icon1Initialized := True;
Icon1 := FShellCache.Data.SmallIcon;
end;
if scSmallOpenIcon in FShellCache.ShellCacheFlags then
begin
Icon2Initialized := True;
Icon2 := FShellCache.Data.SmallOpenIcon;
end;
end else
begin
// Flush the thread state so the icon is reloaded by the thread
States := States - [nsThreadedIconLoading];
States := States - [nsThreadedIconLoaded];
end;
InvalidateCache;
if nsOwnsParent in States then
begin
Parent.Free;
FParent := nil;
end;
FDropTargetInterface := nil;
FShellDetailsInterface := nil;
FShellIconOverlayInterface := nil;
FShellFolder := nil;
if Assigned(Parent) then
if Parent.IsDesktop then
PhysicalDesktopFolder.InvalidateNamespace;
if IsUnicode then
begin
if Assigned(FWin32FindDataW) then
FreeMem(FWin32FindDataW, SizeOf(TWin32FindDataW));
FWin32FindDataW := nil;
end else
begin
if Assigned(FWin32FindDataA) then
FreeMem(FWin32FindDataA, SizeOf(TWin32FindDataA));
FWin32FindDataA := nil;
end;
if Assigned(FSHGetFileInfoRec) then
begin
Finalize(FSHGetFileInfoRec^);
FreeMem(FSHGetFileInfoRec, SizeOf(TSHGetFileInfoRec));
end;
FSHGetFileInfoRec := nil;
Include(FStates, nsShellDetailsSupported); // Be optomistic
Include(FStates, nsShellFolder2Supported); // Be optomistic
FQueryInfoInterface := nil;
FShellIconInterface := nil;
FCurrentContextMenu2 := nil;
if not RefreshIcon then
begin
if Icon1Initialized then
begin
Include(FShellCache.ShellCacheFlags, scSmallIcon);
FShellCache.Data.SmallIcon := Icon1;
end;
if Icon2Initialized then
begin
Include(FShellCache.ShellCacheFlags, scSmallOpenIcon);
FShellCache.Data.SmallOpenIcon := Icon2;
end;
end;
end;
procedure TNamespace.InvalidateRelativePIDL(Folders, NonFolders, IncludeHidden: Boolean);
var
Enum: IEnumIDList;
Flags: Longword;
Fetched: Longword;
Item: PItemIDList;
Done: Boolean;
begin
if Assigned(ParentShellFolder) then
begin
Flags := 0;
if Folders then
Flags := Flags or SHCONTF_FOLDERS;
if NonFolders then
Flags := Flags or SHCONTF_NONFOLDERS;
if IncludeHidden then
Flags := Flags or SHCONTF_INCLUDEHIDDEN;
Done := False;
ParentShellFolder.EnumObjects(0, Flags, Enum);
if Assigned(Enum) then
while (Enum.Next(1, Item, Fetched) = NOERROR) and not Done do
begin
if ComparePIDL(Item, False) = 0 then
begin
PIDLMgr.FreePIDL(FAbsolutePIDL);
FAbsolutePIDL := PIDLMgr.AppendPIDL(Parent.AbsolutePIDL, Item);
FRelativePIDL := PIDLMgr.GetPointerToLastID(FAbsolutePIDL);
InvalidateNamespace;
Done := True
end
end
end
end;
function TNamespace.IsChildByNamespace(TestNamespace: TNamespace;
Immediate: Boolean): Boolean;
{ Returns True if the TestNamespace is a child of the namespace. Immediate }
{ forces function to be true only of the passed PIDL is the immidiate child }
{ of the namespace. }
begin
Result := Boolean( ILIsParent(FAbsolutePIDL, TestNamespace.FAbsolutePIDL, Immediate));
end;
function TNamespace.IsChildByPIDL(TestPIDL: PItemIDList;
Immediate: Boolean): Boolean;
{ Returns True if the TestPIDL is a child of the namespace. Immediate forces }
{ function to be true only of the passed PIDL is the immidiate child of the }
{ namespace. }
begin
Result := Boolean( ILIsParent(FAbsolutePIDL, TestPIDL, Immediate));
end;
function TNamespace.IsChildOfRemovableDrive: Boolean;
// Checks to see if the namespace is a child of a removable drive. If the drive
// is removed then ILIsParent fails because the drive is no longer valid so any
// PIDL walking routines will fail and the PIDL is orphaned
var
NS: TNamespace;
PIDL, NewPIDL: PItemIDList;
OldCB: Word;
begin
Result := False;
if PIDLMgr.IDCount(AbsolutePIDL) > 1 then
begin
PIDL := PIDLMgr.NextID(FAbsolutePIDL);
PIDL := PIDLMgr.NextID(PIDL); // Now we have the Drive
PIDL := PIDLMgr.NextID(PIDL); // Now we have the one past the Drive
OldCb := PIDL.mkid.cb;
PIDL.mkid.cb := 0;
NewPIDL := PIDLMgr.CopyPIDL(FAbsolutePIDL);
PIDL.mkid.cb := OldCB;
// NS is now a TNamespace to the Drive
NS := TNamespace.Create(NewPIDL, nil);
Result := NS.Removable;
NS.Free
end
end;
function TNamespace.IsControlPanel: Boolean;
begin
if Assigned(ControlPanelFolder) then
Result := ILIsEqual(AbsolutePIDL, ControlPanelFolder.AbsolutePIDL)
else
Result := False
end;
function TNamespace.IsControlPanelChildFolder: Boolean;
begin
if Assigned(ControlPanelFolder) then
Result := ILIsParent(ControlPanelFolder.AbsolutePIDL, AbsolutePIDL, True)
else
Result := False
end;
function TNamespace.IsDesktop: Boolean;
begin
Result := PIDLMgr.IsDesktopFolder(AbsolutePIDL)
end;
function TNamespace.IsMyComputer: Boolean;
begin
if Assigned(DrivesFolder) then
Result := ILIsEqual(DrivesFolder.AbsolutePIDL, AbsolutePIDL)
else
Result := False;
end;
function TNamespace.IsNetworkNeighborhood: Boolean;
begin
if Assigned(NetworkNeighborHoodFolder) then
Result := ILIsEqual(NetworkNeighborHoodFolder.AbsolutePIDL, AbsolutePIDL)
else
Result := False;
end;
function TNamespace.IsNetworkNeighborhoodChild: Boolean;
begin
if Assigned(NetworkNeighborHoodFolder) then
Result := ILIsParent(NetworkNeighborHoodFolder.AbsolutePIDL, AbsolutePIDL, False)
else
Result := False;
end;
function TNamespace.IsParentByNamespace(TestNamespace: TNamespace;
Immediate: Boolean): Boolean;
{ Returns True if the TestNamespace is a parent of the namespace. Immediate }
{ forces function to be true only of the passed PIDL is the immidiate parent }
{ of the namespace. }
begin
Result := Boolean( ILIsParent(TestNamespace.FAbsolutePIDL, FAbsolutePIDL, Immediate));
end;
function TNamespace.IsParentByPIDL(TestPIDL: PItemIDList;
Immediate: Boolean): Boolean;
{ Returns True if the TestPIDL is a parent of the namespace. Immediate forces }
{ function to be true only of the passed PIDL is the immidiate parent of the }
{ namespace. }
begin
Result := Boolean( ILIsParent(TestPIDL, FAbsolutePIDL, Immediate));
end;
function TNamespace.IsRecycleBin: Boolean;
begin
{ RecycleBin may not be avaiable if System Administrator has removed it in Win2k at least }
if Assigned(RecycleBinFolder) and not (nsRecycleBinChecked in States) then
begin
if ILIsEqual(AbsolutePIDL, RecycleBinFolder.AbsolutePIDL) then
Include(FStates, nsIsRecycleBin)
else
Exclude(FStates, nsIsRecycleBin);
Include(FStates, nsRecycleBinChecked);
end;
Result := nsIsRecycleBin in States;
end;
function TNamespace.ParseDisplayName: PItemIDList;
begin
Result := ParseDisplayName(NameForParsing)
end;
function TNamespace.ParseDisplayName(Path: WideString): PItemIDList;
var
chEaten: ULONG;
Attrib: ULONG;
Desktop: IShellFolder;
begin
Result := nil;
Attrib := 0;
SHGetDesktopFolder(Desktop);
if Assigned(Desktop) then
begin
if Desktop.ParseDisplayName(0, nil, PWideChar( Path),
chEaten, Result, Attrib) <> NOERROR
then
Result := nil;
end
end;
function TNamespace.Paste(NamespaceArray: TNamespaceArray): Boolean;
var
NSA: TNamespaceArray;
i: integer;
begin
Result := False;
if CanPasteToAll(NamespaceArray) then
begin
if IsDesktop then
begin
SetLength(NSA, Length(NamespaceArray));
// Convert the virtual Desktop based TNamespaces to the Physical Desktop Folder based TNamespaces
for i := 0 to Length(NSA) - 1 do
NSA[i] := TNamespace.Create(PathToPIDL(NamespaceArray[i].NameForParsing), nil);
Result := PhysicalDesktopFolder.Paste(NSA);
end else
begin
if VerifyPIDLRelationship(NamespaceArray) then
Result := ExecuteContextMenuVerb('paste', NamespaceToRelativePIDLArray(NamespaceArray))
end
end
end;
procedure TNamespace.SetFreePIDLOnDestroy(const Value: Boolean);
begin
if Value then
Include(FStates, nsFreePIDLOnDestroy)
else
Exclude(FStates, nsFreePIDLOnDestroy)
end;
procedure TNamespace.SetIconIndexChanged(const Value: Boolean);
// Sets or resets if the index changed. Currently the SetIconIndexByThread method sets
// this flag. It is not reset automaticlly it is up to the application to reset then
// when it has detected and used it.
begin
if Value then
Include(FStates, nsIconIndexChanged)
else
Exclude(FStates, nsIconIndexChanged);
end;
procedure TNamespace.SetIconIndexByThread(IconIndex: Integer; ClearThreadLoading: Boolean);
begin
Include(FStates, nsThreadedIconLoaded); // Small Normal Icon is now Cached
FShellCache.Data.SmallIcon := IconIndex;
Include(FShellCache.ShellCacheFlags, scSmallIcon);
if ClearThreadLoading then
Exclude(FStates, nsThreadedIconLoading);
IconIndexChanged := True;
end;
procedure TNamespace.SetImageByThread(Bitmap: TBitmap;
ClearThreadLoading: Boolean);
begin
Include(FStates, nsThreadedImageLoaded); // Small Normal Icon is now Cached
FImage := Bitmap;
if ClearThreadLoading then
Exclude(FStates, nsThreadedImageLoading);
end;
function TNamespace.SetNameOf(NewName: WideString): Boolean;
const
ALL_FOLDERS = SHCONTF_FOLDERS or SHCONTF_NONFOLDERS or SHCONTF_INCLUDEHIDDEN;
var
P, NewPIDL, NewAbsPIDL: PItemIDList;
Oldcb: Word;
OldCursor: TCursor;
begin
Result := False;
if CanRename and Assigned(ParentShellFolder) then
begin
OldCursor := Screen.Cursor;
Screen.Cursor := crHourglass;
try
{ The shell frees the PIDL so we need a copy }
P := PIDLMgr.CopyPIDL(FRelativePIDL);
NewPIDL := nil;
if Succeeded(ParentShellFolder.SetNameOf(0, P, PWideChar(NewName), ALL_FOLDERS, NewPIDL)) then
begin
// Win98 will return success but never touch NewPIDL when trying to change name
// of dialup connection. Not sure how do it if this fails though??
if Assigned(NewPIDL) then
begin
Result := True;
{ Temporary shortening of AbsolutePIDL }
Oldcb := RelativePIDL.mkid.cb;
RelativePIDL.mkid.cb := 0;
NewAbsPIDL := PIDLMgr.AppendPIDL(AbsolutePIDL, NewPIDL);
RelativePIDL.mkid.cb := Oldcb;
PIDLMgr.FreePIDL(FAbsolutePIDL); // Remember Relative PIDL overlays AbsPIDL
FAbsolutePIDL := NewAbsPIDL;
FRelativePIDL := PIDLMgr.GetPointerToLastID(AbsolutePIDL);
end
end
finally
Screen.Cursor := OldCursor
end
end;
end;
procedure TNamespace.SetThreadIconLoading(const Value: Boolean);
begin
if Value then
Include(FStates, nsThreadedIconLoading)
else
Exclude(FStates, nsThreadedIconLoading)
end;
function TNamespace.GetThreadedImageLoaded: Boolean;
begin
Result := nsThreadedImageLoaded in States
end;
function TNamespace.GetThreadedImageLoading: Boolean;
begin
Result := nsThreadedImageLoading in States
end;
procedure TNamespace.SetThreadImageLoading(const Value: Boolean);
begin
if Value then
Include(FStates, nsThreadedImageLoading)
else
Exclude(FStates, nsThreadedImageLoading)
end;
function TNamespace.ShellExecuteNamespace(WorkingDir, CmdLineArguments: WideString;
ExecuteFolder: Boolean = False; ExecuteFolderShortCut: Boolean = False): Boolean;
{ Attempts execute the object that the namespace is representing. WorkingDir }
{ is the directory that will be the current directory of the application that }
{ is being executed. If the directory does not exist the directory where the }
{ file being executed resides. CmdLineArguments are any switches or parameters }
{ that can be added to the file being executed. }
{ ExecuteFolder stops the call from being performed if the namespace is a folder}
{ Doing so usually opens an explorer window to Explore the folder. }
var
ShellExecuteInfo: TShellExecuteInfo;
ShellExecuteInfoW: TShellExecuteInfoW;
ShortWorkingDir, ShortCmdLine: string;
DoExecute: Boolean;
ShellLink: TVirtualShellLink;
begin
Result := False;
DoExecute := True;
if not ExecuteFolder then
DoExecute := not Folder;
if not ExecuteFolderShortCut and DoExecute then
begin
if Link then
begin
ShellLink := TVirtualShellLink.Create(nil);
try
ShellLink.ReadLink(NameParseAddress);
DoExecute := not DirExistsW(ShellLink.TargetPath);
finally
ShellLink.Free
end
end
end;
if DoExecute then
begin
if Win32Platform = VER_PLATFORM_WIN32_NT then
begin
FillChar(ShellExecuteInfoW, SizeOf(TShellExecuteInfoW), #0);
if DirExistsW(WorkingDir) then
ShellExecuteInfoW.lpDirectory := PWideChar(WorkingDir)
else // This should always be a file not a folder so this is ok
ShellExecuteInfoW.lpDirectory := PWideChar( ExtractFileDirW(NameParseAddress));
ShellExecuteInfoW.cbSize := SizeOf(TShellExecuteInfoW);
ShellExecuteInfoW.fMask := SEE_MASK_INVOKEIDLIST or SEE_MASK_NOCLOSEPROCESS;
ShellExecuteInfoW.Wnd:= Application.Handle;
ShellExecuteInfoW.nShow := SW_SHOWNORMAL;
ShellExecuteInfoW.lpIDList:= AbsolutePIDL;
ShellExecuteInfoW.lpParameters := PWideChar(CmdLineArguments);
Result := ShellExecuteExW_VST(@ShellExecuteInfoW);
end else
begin
FillChar(ShellExecuteInfo, SizeOf(TShellExecuteInfo), #0);
if DirExistsW(WorkingDir) then
ShortWorkingDir := WorkingDir
else
ShortWorkingDir := ExtractFileDir(NameParseAddress);
ShellExecuteInfo.lpDirectory := PChar(ShortWorkingDir);
ShellExecuteInfo.cbSize := SizeOf(TShellExecuteInfo);
ShellExecuteInfo.fMask := SEE_MASK_INVOKEIDLIST or SEE_MASK_NOCLOSEPROCESS;
ShellExecuteInfo.Wnd:= Application.Handle;
ShellExecuteInfo.nShow := SW_SHOWNORMAL;
ShellExecuteInfo.lpIDList:= AbsolutePIDL;
ShortCmdLine := CmdLineArguments;
ShellExecuteInfo.lpParameters := PChar(ShortCmdLine);
Result := ShellExecuteEx(@ShellExecuteInfo);
end
end
end;
function TNamespace.ShowContextMenu(Owner: TWinControl;
ContextMenuCmdCallback: TContextMenuCmdCallback;
ContextMenuShowCallback: TContextMenuShowCallback;
ContextMenuAfterCmdCallback: TContextMenuAfterCmdCallback;
Position: PPoint = nil;
CustomShellSubMenu: TPopupMenu = nil;
CustomSubMenuCaption: WideString = ''): Boolean;
{ Displays the ContextMenu of the namespace. }
var
PIDLArray: TRelativePIDLArray;
begin
SetLength(PIDLArray, 1);
PIDLArray[0] := RelativePIDL;
Result := InternalShowContextMenu(Owner, ContextMenuCmdCallback, ContextMenuShowCallback,
ContextMenuAfterCmdCallback, PIDLArray, Position, CustomShellSubMenu, CustomSubMenuCaption,
False);
end;
function TNamespace.ShowContextMenuMulti(Owner: TWinControl;
ContextMenuCmdCallback: TContextMenuCmdCallback;
ContextMenuShowCallback: TContextMenuShowCallback;
ContextMenuAfterCmdCallback: TContextMenuAfterCmdCallback;
NamespaceArray: TNamespaceArray;
Position: PPoint = nil;
CustomShellSubMenu: TPopupMenu = nil;
CustomSubMenuCaption: WideString = '';
ForceFromDesktop: Boolean = False): Boolean;
begin
if ForceFromDesktop then
begin
Result := InternalShowContextMenu(Owner, ContextMenuCmdCallBack,
ContextMenuShowCallback, ContextMenuAfterCmdCallback,
NamespaceToAbsolutePIDLArray(NamespaceArray), Position, CustomShellSubMenu,
CustomSubMenuCaption, ForceFromDesktop)
end else
begin
// 12.5.02
// Let PIDLs be collected (although incorrectly) from various folders
// it is the apps responsiblity to parse out the right selection.
// See the FileFind demo
//if VerifyPIDLRelationship(NamespaceArray) then
Result := InternalShowContextMenu(Owner, ContextMenuCmdCallBack,
ContextMenuShowCallback, ContextMenuAfterCmdCallback,
NamespaceToRelativePIDLArray(NamespaceArray), Position, CustomShellSubMenu,
CustomSubMenuCaption, ForceFromDesktop)
//else
// Result := False
end
end;
procedure TNamespace.ShowPropertySheet;
var
NamespaceArray: TNamespaceArray;
begin
if HasPropSheet then
begin
SetLength(NamespaceArray, 1);
NamespaceArray[0] := Self;
if VerifyPIDLRelationship(NamespaceArray) then
ExecuteContextMenuVerb('properties', NamespaceToRelativePIDLArray(NamespaceArray))
end
end;
procedure TNamespace.ShowPropertySheetMulti(NamespaceArray: TNamespaceArray);
var
APIDLArray: TPIDLArray;
IDO: IDataObject;
begin
APIDLArray := nil;
if CanShowPropertiesOfAll(NamespaceArray) then
// Call SHMultiFileProperties_VST to show the property sheet when the
// APIDLArray items are from different folders.
// Minimum OS: Win2k
if Assigned(SHMultiFileProperties_VST) then
begin
// APIDLArray to IDataObject, use the DesktopFolder!!!
APIDLArray := NamespaceToAbsolutePIDLArray(NamespaceArray);
if DesktopFolder.ShellFolder.GetUIObjectOf(0, Length(APIDLArray), PItemIDList(APIDLArray[0]),
IDataObject, nil, Pointer(IDO)) = NOERROR then
begin
SHMultiFileProperties_VST(IDO, 0);
end;
end
else
if VerifyPIDLRelationship(NamespaceArray) then
ExecuteContextMenuVerb('properties', NamespaceToRelativePIDLArray(NamespaceArray));
end;
function TNamespace.TestAttributesOf(Flags: Longword; FlushCache: Boolean; SoftFlush: Boolean = False): Boolean;
// Pass any of the flags for IShellFolder.GetAttributesOf to see if they exist
// for the Folder. FlushCache forces the shell to reload the information on the
// namespace. Useful to handle the bug where the shell caches the icon for a
// CD drive and never changes it. Flushing it will force it to reload the Index
// Note this is dangerous with 3rd party namespaces. M$ suggests this method for
// their namespaces but at least Hummingbird network namespace crashes with this
// they apparently don't check for 0 PIDL's
// Soft Flush add the SFGAO_VALIDATE flag to get the fresh info
var
x: Longword;
begin
if Assigned(ParentShellFolder) then
begin
x := Flags;
if FlushCache then
begin
x := x or SFGAO_VALIDATE;
ParentShellFolder.GetAttributesOf(0, FRelativePIDL, x);
end else
if SoftFlush then
begin
x := x or SFGAO_VALIDATE;
ParentShellFolder.GetAttributesOf(1, FRelativePIDL, x)
end else
ParentShellFolder.GetAttributesOf(1, FRelativePIDL, x);
Result := Flags and x = Flags;
end else
Result := False;
end;
function TNamespace.VerifyPIDLRelationship(NamespaceArray: TNamespaceArray): Boolean;
var
i: integer;
begin
Result := True;
i := 0;
while (i < Length(NamespaceArray)) and Result do
begin
{ TNamespace is based off using the parent to access the data so it is }
{ correct to do the test for childPIDLs relative from the parent. }
if Assigned(Parent) then
Result := ILIsParent(Parent.AbsolutePIDL, NamespaceArray[i].AbsolutePIDL, True)
else begin
if (Length(NamespaceArray) = 1) and NamespaceArray[0].IsDesktop then
Result := True
else
Result := False;
end;
Inc(i)
end;
if not Result and not IsDesktop then
ShowWideMessage(Application.Handle, S_ERROR, STR_ERR_BAD_PIDL_RELATIONSHIP);
end;
procedure TNamespace.WindowProcForContextMenu(var Message: TMessage);
begin
FOldWndProcForContextMenu(Message); // Call the OldWindProc of the ContextMenu owner
case Message.Msg of
WM_DRAWITEM, WM_INITMENUPOPUP, WM_MEASUREITEM, WM_MENUCHAR:
HandleContextMenuMsg(Message.Msg, Message.WParam, Message.LParam, Message.Result);
end;
end;
function TNamespace.GetCategoryProviderInterface: ICategoryProvider;
begin
if not Assigned(FCategoryProviderInterface) and Folder and Assigned(ShellFolder) then
begin
if not Succeeded(ShellFolder.CreateViewObject(0, IID_ICategoryProvider, Pointer(FCategoryProviderInterface))) then
FCategoryProviderInterface := nil
end;
Result := FCategoryProviderInterface
end;
function TNamespace.GetCategoryAlphabetical: ICategorizer;
begin
Result := CreateCategory(CLSID_AlphabeticalCategorizer)
end;
function TNamespace.GetCategoryDriveSize: ICategorizer;
begin
Result := CreateCategory(CLSID_DriveSizeCategorizer)
end;
function TNamespace.GetCategoryDriveType: ICategorizer;
begin
Result := CreateCategory(CLSID_DriveTypeCategorizer)
end;
function TNamespace.GetCategoryFreeSpace: ICategorizer;
begin
Result := CreateCategory(CLSID_FreeSpaceCategorizer)
end;
function TNamespace.GetCategorySize: ICategorizer;
begin
Result := CreateCategory(CLSID_SizeCategorizer)
end;
function TNamespace.GetCategoryTime: ICategorizer;
begin
Result := CreateCategory(CLSID_TimeCategorizer)
end;
function TNamespace.CreateCategory(GUID: TGUID): ICategorizer;
begin
Result := nil;
if Assigned(CategoryProviderInterface) then
begin
if not Succeeded(CategoryProviderInterface.CreateCategory(GUID, IID_ICategorizer, Result)) then
Result := nil;
end
end;
function TNamespace.GetBrowserFrameOptionsInterface: IBrowserFrameOptions;
var
Found: Boolean;
begin
if not Assigned(FBrowserFrameOptionsInterface) then
begin
Found := False;
if Assigned(Parent) then
begin
Found := Succeeded(Parent.ShellFolder.GetUIObjectOf(0, 1, FRelativePIDL, IBrowserFrameOptions, nil, Pointer(FBrowserFrameOptionsInterface)));
if not Found and Folder then
begin
Found := Succeeded(ShellFolder.CreateViewObject(0, IBrowserFrameOptions, Pointer(FBrowserFrameOptionsInterface)));
if not Found then
Found := Succeeded(ShellFolder.QueryInterface(IBrowserFrameOptions, Pointer(FBrowserFrameOptionsInterface)))
end
end;
if not Found then
FBrowserFrameOptionsInterface := nil
end;
Result := FBrowserFrameOptionsInterface
end;
function TNamespace.GetQueryAssociationsInterface: IQueryAssociations;
var
Found: Boolean;
begin
if not Assigned(FQueryAssociationsInterface) then
begin
Found := False;
if Assigned(Parent) then
begin
Found := Succeeded(Parent.ShellFolder.GetUIObjectOf(0, 1, FRelativePIDL, IQueryAssociations, nil, Pointer(FQueryAssociationsInterface)));
if not Found and Folder then
begin
Found := Succeeded(ShellFolder.CreateViewObject(0, IQueryAssociations, Pointer(FQueryAssociationsInterface)));
if not Found then
Found := Succeeded(ShellFolder.QueryInterface(IQueryAssociations, Pointer(FQueryAssociationsInterface)))
end
end;
if not Found then
FQueryAssociationsInterface := nil
end;
Result := FQueryAssociationsInterface
end;
{ TExtractImage }
constructor TExtractImage.Create;
begin
FWidth := 200;
FHeight := 200;
FColorDepth := 32;
FFlags := IEIFLAG_SCREEN;
end;
function TExtractImage.GetImage: TBitmap;
var
Bits: HBITMAP;
begin
Bits := 0;
Result := nil;
if Assigned(ExtractImageInterface) then
if Succeeded(ExtractImageInterface.Extract(Bits)) then
begin
Result := TBitmap.Create;
Result.Handle := Bits;
end
end;
function TExtractImage.GetExtractImageInterface2: IExtractImage2;
var
Found: Boolean;
begin
if not Assigned(FExtractImage2Interface) then
begin
Found := False;
if Assigned(ExtractImageInterface) then
Found := ExtractImageInterface.QueryInterface(IID_IExtractImage2,
Pointer(FExtractImage2Interface)) <> E_NOINTERFACE;
if not Found then
FExtractImage2Interface := nil
end;
Result := FExtractImage2Interface
end;
function TExtractImage.GetExtractImageInterface: IExtractImage;
var
Found: Boolean;
begin
if not Assigned(FExtractImageInterface) then
begin
Found := False;
if Assigned(Owner.ParentShellFolder) then
begin
Found := Owner.ParentShellFolder.GetUIObjectOf(0, 1, Owner.FRelativePIDL,
IExtractImage, nil, Pointer(FExtractImageInterface)) = NOERROR;
end;
if not Found and Assigned(Owner.ShellFolder) then
begin
Found := Owner.ShellFolder.CreateViewObject(0, IExtractImage,
Pointer(FExtractImageInterface)) = NOERROR;
end;
if not Found then
FExtractImageInterface := nil
end;
Result := FExtractImageInterface
end;
function TExtractImage.GetImagePath: WideString;
var
Size: TSize;
Buffer: PWideChar;
begin
if Assigned(ExtractImageInterface) then
begin
GetMem(Buffer, MAX_PATH * 4);
try
try
Size.cx := Width;
Size.cy := Height;
if ExtractImageInterface.GetLocation(Buffer, MAX_PATH, FPriority, Size,
ColorDepth, FFlags) = NOERROR then
begin
Result := Buffer;
PathExtracted := True
end else
Result := '';
finally
FreeMem(Buffer);
end except
Result := ''
end
end;
end;
{ ----------------------------------------------------------------------------- }
{ Encapsulation of IShellLink }
{ ----------------------------------------------------------------------------- }
{ TVirtualShellLink }
destructor TVirtualShellLink.Destroy;
begin
FreeTargetIDList;
inherited;
end;
procedure TVirtualShellLink.FreeTargetIDList;
var
Malloc: IMalloc;
PIDL: PItemIDList;
begin
if Assigned(TargetIDList) then
begin
PIDL := TargetIDLIst;
TargetIDList := nil;
SHGetMalloc(Malloc);
Malloc.Free(PIDL);
end;
end;
function TVirtualShellLink.GetShellLinkAInterface: IShellLink;
begin
if not Assigned(FShellLinkA) then
begin
if not Succeeded(CoCreateInstance(CLSID_ShellLink, nil, CLSCTX_INPROC_SERVER,
IShellLinkA, FShellLinkA))
then
FShellLinkA := nil;
end;
Result := FShellLinkA
end;
function TVirtualShellLink.GetShellLinkWInterface: IShellLinkW;
begin
if not Assigned(FShellLinkW) then
begin
if not Succeeded(CoCreateInstance(CLSID_ShellLink, nil, CLSCTX_INPROC_SERVER,
IShellLinkW, FShellLinkW))
then
FShellLinkW := nil
end;
Result := FShellLinkW
end;
function TVirtualShellLink.ReadLink(LinkFileName: WideString): Boolean;
const
BUFFERSIZE = 1024;
var
Success: Boolean;
S: string;
PersistFile: IPersistFile;
pwHotKey: Word;
Cmd: integer;
FindData: WIN32_FIND_DATA;
FindDataW: WIN32_FIND_DATAW;
begin
Result := False;
Success := False;
if Assigned(ShellLinkWInterface) then
begin
if Supports(ShellLinkWInterface, IPersistFile, PersistFile) then
begin
FFileName := LinkFileName;
Success := Succeeded(PersistFile.Load(PWideChar(FileName), STGM_READWRITE));
if Success then
begin
Result := True;
SetLength(FTargetPath, BUFFERSIZE);
Success := Succeeded(ShellLinkWInterface.GetPath(PWideChar( FTargetPath), MAX_PATH, FindDataW, SLGP_UNCPRIORITY));
if Success then
SetLength(FTargetPath, lstrlenW(PWideChar( FTargetPath)));
SetLength(FArguments, BUFFERSIZE);
Success := Succeeded(ShellLinkWInterface.GetArguments(PWideChar( FArguments), BUFFERSIZE));
if Success then
SetLength(FArguments, lstrlenW(PWideChar( FArguments)));
SetLength(FDescription, BUFFERSIZE);
Success := Succeeded(ShellLinkWInterface.GetDescription(PWideChar( FDescription), BUFFERSIZE));
if Success then
SetLength(FDescription, lstrlenW(PWideChar( FDescription)));
SetLength(FWorkingDirectory, BUFFERSIZE);
Success := Succeeded(ShellLinkWInterface.GetWorkingDirectory(PWideChar( FWorkingDirectory), BUFFERSIZE));
if Success then
SetLength(FWorkingDirectory, lstrlenW(PWideChar( FWorkingDirectory)));
SetLength(FIconLocation, BUFFERSIZE);
Success := Succeeded(ShellLinkWInterface.GetIconLocation(PWideChar( FIconLocation), BUFFERSIZE, FIconIndex));
if Success then
SetLength(FIconLocation, lstrlenW(PWideChar( FIconLocation)));
FreeTargetIDList;
ShellLinkWInterface.GetIDList(FTargetIDList);
Success := Succeeded(ShellLinkWInterface.GetHotKey(pwHotKey));
if Success then
begin
FHotKey := LoByte(pwHotKey);
FHotKeyModifiers := [];
if HiByte(pwHotKey) and HOTKEYF_ALT <> 0 then Include(FHotKeyModifiers, hkmAlt);
if HiByte(pwHotKey) and HOTKEYF_CONTROL <> 0 then Include(FHotKeyModifiers, hkmControl);
if HiByte(pwHotKey) and HOTKEYF_EXT <> 0 then Include(FHotKeyModifiers, hkmExtendedKey);
if HiByte(pwHotKey) and HOTKEYF_SHIFT <> 0 then Include(FHotKeyModifiers, hkmShift);
end;
Success := Succeeded(ShellLinkWInterface.GetShowCmd(Cmd));
if Success then
case Cmd of
SW_HIDE: ShowCmd := swHide;
SW_MAXIMIZE: ShowCmd := swMaximize;
SW_MINIMIZE: ShowCmd := swMinimize;
SW_RESTORE: ShowCmd := swRestore;
SW_SHOW: ShowCmd := swShow;
SW_SHOWDEFAULT: ShowCmd := swShowDefault;
SW_SHOWMINIMIZED: ShowCmd := swShowMinimized;
SW_SHOWMINNOACTIVE: ShowCmd := swShowMinNoActive;
SW_SHOWNA : ShowCmd := swShowNA;
SW_SHOWNOACTIVATE : ShowCmd := swShowNoActive;
SW_SHOWNORMAL: ShowCmd := swShowNormal;
end;
// Why was that here? Removed 11.12.02
// PersistFile.Save(PWideChar(FileName), True)
end else
FFileName := ''
end
end;
if not Success and Assigned(ShellLinkAInterface) then
begin
if Supports(ShellLinkAInterface, IPersistFile, PersistFile) then
begin
FFileName := LinkFileName;
Success := Succeeded(PersistFile.Load(PWideChar(FileName), STGM_READWRITE));
if Success then
begin
Result := True;
SetLength(S, BUFFERSIZE);
Success := Succeeded(ShellLinkAInterface.GetPath(PChar( S), MAX_PATH, FindData, SLGP_UNCPRIORITY));
if Success then
begin
SetLength(S, lstrlen(PChar( S)));
FTargetPath := S
end;
SetLength(S, BUFFERSIZE);
Success := Succeeded(ShellLinkAInterface.GetArguments(PChar( S), BUFFERSIZE));
if Success then
begin
SetLength(S, lstrlen(PChar( S)));
FArguments := S
end;
SetLength(S, BUFFERSIZE);
Success := Succeeded(ShellLinkAInterface.GetDescription(PChar( S), BUFFERSIZE));
if Success then
begin
SetLength(S, lstrlen(PChar( S)));
FDescription := S
end;
SetLength(S, BUFFERSIZE);
Success := Succeeded(ShellLinkAInterface.GetWorkingDirectory(PChar( S), BUFFERSIZE));
if Success then
begin
SetLength(S, lstrlen(PChar( S)));
FWorkingDirectory := S
end;
SetLength(S, BUFFERSIZE);
Success := Succeeded(ShellLinkAInterface.GetIconLocation(PChar( S), BUFFERSIZE, FIconIndex));
if Success then
begin
SetLength(S, lstrlen(PChar( S)));
FIconLocation := S
end;
FreeTargetIDList;
ShellLinkAInterface.GetIDList(FTargetIDList);
Success := Succeeded(ShellLinkAInterface.GetHotKey(pwHotKey));
if Success then
begin
FHotKey := LoByte(pwHotKey);
FHotKeyModifiers := [];
if HiByte(pwHotKey) and HOTKEYF_ALT <> 0 then Include(FHotKeyModifiers, hkmAlt);
if HiByte(pwHotKey) and HOTKEYF_CONTROL <> 0 then Include(FHotKeyModifiers, hkmControl);
if HiByte(pwHotKey) and HOTKEYF_EXT <> 0 then Include(FHotKeyModifiers, hkmExtendedKey);
if HiByte(pwHotKey) and HOTKEYF_SHIFT <> 0 then Include(FHotKeyModifiers, hkmShift);
end;
Success := Succeeded(ShellLinkAInterface.GetShowCmd(Cmd));
if Success then
case Cmd of
SW_HIDE: ShowCmd := swHide;
SW_MAXIMIZE: ShowCmd := swMaximize;
SW_MINIMIZE: ShowCmd := swMinimize;
SW_RESTORE: ShowCmd := swRestore;
SW_SHOW: ShowCmd := swShow;
SW_SHOWDEFAULT: ShowCmd := swShowDefault;
SW_SHOWMINIMIZED: ShowCmd := swShowMinimized;
SW_SHOWMINNOACTIVE: ShowCmd := swShowMinNoActive;
SW_SHOWNA : ShowCmd := swShowNA;
SW_SHOWNOACTIVATE : ShowCmd := swShowNoActive;
SW_SHOWNORMAL: ShowCmd := swShowNormal;
end;
PersistFile.Save(PWideChar(FileName), True)
end else
FFileName := '';
end
end
end;
function TVirtualShellLink.WriteLink(LinkFileName: WideString): Boolean;
var
S: string;
PersistFile: IPersistFile;
pwHotKey, pwHotKeyHi: Word;
KeyModifier: THotKeyModifiers;
Cmd: integer;
begin
Result := False;
if (TargetPath = '') and not Assigned(TargetIDList) and not SilentWrite then
ShowWideMessage(Application.Handle, S_NOTARGETDEFINED, S_ERROR)
else begin
if Assigned(ShellLinkWInterface) then
begin
if Supports(ShellLinkWInterface, IPersistFile, PersistFile) then
begin
FFileName := LinkFileName;
ShellLinkWInterface.SetPath(PWideChar( FTargetPath));
ShellLinkWInterface.SetArguments(PWideChar( FArguments));
ShellLinkWInterface.SetDescription(PWideChar( FDescription));
ShellLinkWInterface.SetPath(PWideChar( FTargetPath));
ShellLinkWInterface.SetWorkingDirectory(PWideChar( FWorkingDirectory));
ShellLinkWInterface.SetIconLocation(PWideChar( FIconLocation), FIconIndex);
if Assigned(FTargetIDList) then
ShellLinkWInterface.SetIDList(FTargetIDList);
pwHotKey := HotKey;
pwHotKeyHi := 0;
KeyModifier := HotKeyModifiers;
if hkmAlt in KeyModifier then pwHotKeyHi := pwHotKeyHi or HOTKEYF_ALT;
if hkmControl in KeyModifier then pwHotKeyHi := pwHotKeyHi or HOTKEYF_CONTROL;
if hkmExtendedKey in KeyModifier then pwHotKeyHi := pwHotKeyHi or HOTKEYF_EXT;
if hkmShift in KeyModifier then pwHotKeyHi := pwHotKeyHi or HOTKEYF_SHIFT;
pwHotKeyHi := pwHotKeyHi shl 8; // Make lower 8 bits the upper 8 bits
pwHotKeyHi := pwHotKeyHi and $FF00; // Make sure lower 8 bits clear
pwHotKey := pwHotKey or pwHotKeyHi;
ShellLinkWInterface.SetHotkey(pwHotKey);
case ShowCmd of
swHide: Cmd := SW_HIDE;
swMaximize: Cmd := SW_MAXIMIZE;
swMinimize: Cmd := SW_MINIMIZE;
swRestore: Cmd := SW_RESTORE;
swShow: Cmd := SW_SHOW;
swShowDefault: Cmd := SW_SHOWDEFAULT;
swShowMinimized: Cmd := SW_SHOWMINIMIZED;
swShowMinNoActive: Cmd := SW_SHOWMINNOACTIVE;
swShowNA: Cmd := SW_SHOWNA;
swShowNoActive: Cmd := SW_SHOWNOACTIVATE;
swShowNormal: Cmd := SW_SHOWNORMAL;
else
Cmd := SW_SHOWNORMAL
end;
ShellLinkWInterface.SetShowCmd(Cmd);
Result := Succeeded(PersistFile.Save(PWideChar(FileName), True))
end;
end;
if not Result and Assigned(ShellLinkAInterface) then
begin
if Supports(ShellLinkAInterface, IPersistFile, PersistFile) then
begin
FFileName := LinkFileName;
S := FTargetPath;
ShellLinkAInterface.SetPath(PChar( S));
S := FArguments;
ShellLinkAInterface.SetArguments(PChar(S));
S := FDescription;
ShellLinkAInterface.SetDescription(PChar( S));
S := FTargetPath;
ShellLinkAInterface.SetPath(PChar( S));
S := FWorkingDirectory;
ShellLinkAInterface.SetWorkingDirectory(PChar( S));
S := FIconLocation;
ShellLinkAInterface.SetIconLocation(PChar( S), FIconIndex);
if Assigned(FTargetIDList) then
ShellLinkAInterface.SetIDList(FTargetIDList);
pwHotKey := HotKey;
pwHotKeyHi := 0;
KeyModifier := HotKeyModifiers;
if hkmAlt in KeyModifier then pwHotKeyHi := pwHotKeyHi or HOTKEYF_ALT;
if hkmControl in KeyModifier then pwHotKeyHi := pwHotKeyHi or HOTKEYF_CONTROL;
if hkmExtendedKey in KeyModifier then pwHotKeyHi := pwHotKeyHi or HOTKEYF_EXT;
if hkmShift in KeyModifier then pwHotKeyHi := pwHotKeyHi or HOTKEYF_SHIFT;
pwHotKeyHi := pwHotKeyHi shl 8; // Make lower 8 bits the upper 8 bits
pwHotKeyHi := pwHotKeyHi and $FF00; // Make sure lower 8 bits clear
pwHotKey := pwHotKey or pwHotKeyHi;
ShellLinkAInterface.SetHotkey(pwHotKey);
case ShowCmd of
swHide: Cmd := SW_HIDE;
swMaximize: Cmd := SW_MAXIMIZE;
swMinimize: Cmd := SW_MINIMIZE;
swRestore: Cmd := SW_RESTORE;
swShow: Cmd := SW_SHOW;
swShowDefault: Cmd := SW_SHOWDEFAULT;
swShowMinimized: Cmd := SW_SHOWMINIMIZED;
swShowMinNoActive: Cmd := SW_SHOWMINNOACTIVE;
swShowNA: Cmd := SW_SHOWNA;
swShowNoActive: Cmd := SW_SHOWNOACTIVATE;
swShowNormal: Cmd := SW_SHOWNORMAL;
else
Cmd := SW_SHOWNORMAL
end;
ShellLinkAInterface.SetShowCmd(Cmd);
Result := Succeeded(PersistFile.Save(PWideChar(FileName), True))
end
end
end
end;
{ ----------------------------------------------------------------------------- }
{ TList that implements basic streaming }
{ ----------------------------------------------------------------------------- }
{ TStreamableList }
constructor TStreamableList.Create;
begin
FStreamVersion := STREAM_VERSION_DEFAULT
end;
procedure TStreamableList.LoadFromFile(FileName: WideString; Version: integer = 0;
ReadVerFromStream: Boolean = False);
var
FileStream: TWideFileStream;
begin
FileStream := nil;
try
FileStream := TWideFileStream.Create(FileName, fmOpenRead or fmShareExclusive);
LoadFromStream(FileStream);
finally
FileStream.Free
end;
end;
procedure TStreamableList.LoadFromStream(S: TStream; Version: integer;
ReadVerFromStream: Boolean);
begin
Clear;
if ReadVerFromStream then
S.ReadBuffer(FStreamVersion, Sizeof(FStreamVersion))
else
FStreamVersion := Version;
end;
procedure TStreamableList.SaveToFile(FileName: WideString; Version: integer = 0;
ReadVerFromStream: Boolean = False);
var
FileStream: TWideFileStream;
begin
FileStream := nil;
try
FileStream := TWideFileStream.Create(FileName, fmCreate or fmShareExclusive);
SaveToStream(FileStream);
finally
FileStream.Free
end;
end;
procedure TStreamableList.SaveToStream(S: TStream; Version: integer;
WriteVerToStream: Boolean);
begin
if WriteVerToStream then
S.WriteBuffer(Version, Sizeof(Version));
FStreamVersion := Version;
end;
{ ----------------------------------------------------------------------------- }
{ TClass that implements basic streaming }
{ ----------------------------------------------------------------------------- }
{ TStreamableClass }
constructor TStreamableClass.Create;
begin
FStreamVersion := STREAM_VERSION_DEFAULT
end;
procedure TStreamableClass.LoadFromFile(FileName: WideString; Version: integer = 0; ReadVerFromStream: Boolean = False);
var
FileStream: TWideFileStream;
begin
FileStream := nil;
try
FileStream := TWideFileStream.Create(FileName, fmOpenRead or fmShareExclusive);
LoadFromStream(FileStream, Version, ReadVerFromStream);
finally
FileStream.Free
end;
end;
procedure TStreamableClass.LoadFromStream(S: TStream; Version: integer;
ReadVerFromStream: Boolean);
begin
if ReadVerFromStream then
S.ReadBuffer(FStreamVersion, Sizeof(FStreamVersion))
else
FStreamVersion := Version;
end;
procedure TStreamableClass.SaveToFile(FileName: WideString; Version: integer = 0; ReadVerFromStream: Boolean = False);
var
FileStream: TWideFileStream;
begin
FileStream := nil;
try
FileStream := TWideFileStream.Create(FileName, fmCreate or fmShareExclusive);
SaveToStream(FileStream, Version, ReadVerFromStream);
finally
FileStream.Free
end;
end;
procedure TStreamableClass.SaveToStream(S: TStream; Version: integer;
WriteVerToStream: Boolean);
begin
if WriteVerToStream then
S.WriteBuffer(Version, Sizeof(Version));
FStreamVersion := Version;
end;
{ ----------------------------------------------------------------------------- }
{ Class that frees it self when the reference count goes to 0. Like a com }
{ object but the compiler does not inc/dec automaticlly }
{ ----------------------------------------------------------------------------- }
{ TReferenceCounted }
procedure TReferenceCounted.AddRef;
begin
InterlockedIncrement(FRefCount)
end;
procedure TReferenceCounted.Release;
begin
InterlockedDecrement (FRefCount);
if FRefCount <= 0 then
Free;
end;
{ ----------------------------------------------------------------------------- }
{ TList that frees it self when the reference count goes to 0. Like a com }
{ object but the compiler does not inc/dec automaticlly }
{ ----------------------------------------------------------------------------- }
{ TReferenceCountedList }
procedure TReferenceCountedList.AddRef;
begin
InterlockedIncrement(FRefCount)
end;
procedure TReferenceCountedList.Release;
begin
InterlockedDecrement (FRefCount);
if FRefCount <= 0 then
Free;
end;
{ TShellSortHelper }
function TShellSortHelper.CompareIDSort(SortColumn: integer; NS1,
NS2: TNamespace): Integer;
begin
if Assigned(NS1.ParentShellFolder) then
begin
{11.14.02}
// Result := ShortInt( NS1.ParentShellFolder.CompareIDs(
// SortColumn, NS1.RelativePIDL, NS2.RelativePIDL));
Result := NS2.ComparePIDL(NS1.RelativePIDL, False, SortColumn);
{11.14.02 END}
{ If we are not sorting the Name column then do a sub-sort on the name if }
{ the items are equal. }
if (SortColumn > 0) and (Result = 0) then
Result := StrCompW(PWideChar( NS1.NameNormal), PWideChar( NS2.NameNormal))
end else
Result := 0;
end;
function TShellSortHelper.DiscriminateFolders(NS1,
NS2: TNamespace): Integer;
begin
Result := 0;
if NS1.Folder xor NS2.Folder then
begin
if NS1.Folder and not NS2.Folder then
Result := -1
else
if not NS1.Folder and NS2.Folder then
Result := 1
end
end;
function TShellSortHelper.SortFileSize(NS1, NS2: TNamespace): Integer;
begin
Result := DiscriminateFolders(NS1, NS2);
if Result = 0 then
begin
if NS1.SizeOfFileInt64 > NS2.SizeOfFileInt64 then
Result := 1
else
if NS1.SizeOfFileInt64 < NS2.SizeOfFileInt64 then
Result := -1
else
Result := CompareIDSort(0, NS1, NS2)
end
end;
function TShellSortHelper.SortFileTime(FT1, FT2: TFileTime; NS1,
NS2: TNamespace): Integer;
begin
Result := DiscriminateFolders(NS1, NS2);
if Result = 0 then
begin
Result := CompareFileTime(FT1, FT2);
if Result = 0 then
Result := CompareIDSort(0, NS1, NS2)
end
end;
function TShellSortHelper.SortString(S1, S2: WideString; NS1,
NS2: TNamespace): Integer;
begin
Result := DiscriminateFolders(NS1, NS2);
if Result = 0 then
begin
Result := StrCompW(PWideChar( S1), PWideChar(S2));
if Result = 0 then
Result := CompareIDSort(0, NS1, NS2)
end
end;
function TShellSortHelper.SortType(NS1, NS2: TNamespace): Integer;
begin
if FileSort = fsFileType then
Result := SortString(NS1.FileType, NS2.FileType, NS1, NS2)
else begin
{ Must be fsFileExtension }
Result := DiscriminateFolders(NS1, NS2);
if Result = 0 then
begin
if NS1.FileSystem and NS2.FileSystem then
begin
Result := SortString(ExtractFileExt(NS1.NameParseAddress), ExtractFileExt(NS2.NameParseAddress), NS1, NS2);
if Result = 0 then
CompareIDSort(0, NS1, NS2); // Secondary sort
end;
end
end
end;
initialization
FileIconInit(True); // This MUST be before the Namespaces are created or it won't work because the IconCache may have an icon in from the namespace
if not LoadShell32Functions then
Halt(0);
PIDLMgr := TPIDLManager.Create;
DesktopFolder := CreateSpecialNamespace(CSIDL_DESKTOP);
RecycleBinFolder := CreateSpecialNamespace(CSIDL_BITBUCKET);
PhysicalDesktopFolder := CreateSpecialNamespace(CSIDL_DESKTOPDIRECTORY);
DrivesFolder := CreateSpecialNamespace(CSIDL_DRIVES);
PrinterFolder := CreateSpecialNamespace(CSIDL_PRINTERS);
HistoryFolder := CreateSpecialNamespace(CSIDL_HISTORY);
ControlPanelFolder := CreateSpecialNamespace(CSIDL_CONTROLS);
NetworkNeighborHoodFolder := CreateSpecialNamespace(CSIDL_NETWORK);
TemplatesFolder := CreateSpecialNamespace(CSIDL_TEMPLATES);
MyDocumentsFolder := CreateSpecialNamespace(CSIDL_PERSONAL);
FavoritesFolder := CreateSpecialNamespace(CSIDL_FAVORITES);
finalization
FreeAndNil(DesktopFolder);
FreeAndNil(RecycleBinFolder);
FreeAndNil(PhysicalDesktopFolder);
FreeAndNil(DrivesFolder);
FreeAndNil(HistoryFolder);
FreeAndNil(PrinterFolder);
FreeAndNil(ControlPanelFolder);
FreeAndNil(NetworkNeighborHoodFolder);
FreeAndNil(TemplatesFolder);
FreeAndNil(MyDocumentsFolder);
FreeAndNil(FavoritesFolder);
FreeAndNil(PIDLMgr);
end.
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