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//
// Class for creating OLE automation controllers.
//
// CreateObject() creates an automation object
// Invoke() will call a property or method of the automation object.
// GetProperty() returns a property
// SetProperty() changes a property
// Method() invokes a method
//
// For example, the following VB code will control Microsoft Word:
//
// Private Sub Form_Load()
// Dim wb As Object
// Set wb = CreateObject("Word.Basic")
// wb.AppShow
// wb.FileNewDefault
// wb.Insert "This is a test"
// wb.FileSaveAs "c:\sample.doc)"
// End Sub
//
// A C++ automation controller that does the same can be written as follows:
// the helper functions:
//
// Void FormLoad ()
// {
// COleAutomationControl Aut;
// Aut.CreateObject("Word.Basic");
// Aut.Method ("AppShow");
// Aut.Method ("FileNewDefault");
// Aut.Method ("Insert", "s", (LPOLESTR) OLESTR ("This is a test"));
// Aut.Method ("FileSaveAs", "s", OLESTR ("c:\\sample.doc"));
// }
//
//
#include "stdafx.h"
#include <stdarg.h>
#include "oleaut.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
static bool CountArgsInFormat (LPCTSTR Format, UINT* nArgs);
static LPCTSTR GetNextVarType (LPCTSTR Format, VARTYPE* pVarType);
COleAutomationControl::COleAutomationControl ()
{
m_pDispatch = NULL;
m_hResult = NOERROR;
m_nErrArg = 0;
VariantInit (&m_VariantResult);
}
COleAutomationControl::~COleAutomationControl ()
{
DeleteObject ();
}
void COleAutomationControl::DeleteObject ()
{
if (m_pDispatch)
{
m_pDispatch->Release ();
m_pDispatch = NULL;
}
}
// Creates an instance of the Automation object and
// obtains it's IDispatch interface.
//
// Parameters:
// ProgId ProgID of Automation object
//
bool COleAutomationControl::CreateObject (char* ProgId)
{
CLSID ClsId; // CLSID of automation object
LPUNKNOWN pUnknown = NULL; // IUnknown of automation object
// Retrieve CLSID from the progID that the user specified
LPOLESTR OleProgId = TO_OLE_STR (ProgId);
m_hResult = CLSIDFromProgID (OleProgId, &ClsId);
if (FAILED (m_hResult))
goto error;
// Create an instance of the automation object and ask for the
// IDispatch interface
m_hResult = CoCreateInstance (ClsId, NULL, CLSCTX_SERVER,
IID_IUnknown, (void**) &pUnknown);
if (FAILED (m_hResult))
goto error;
m_hResult = pUnknown->QueryInterface (IID_IDispatch, (void**) &m_pDispatch);
if (FAILED (m_hResult))
goto error;
pUnknown->Release ();
return true;
error:
if (pUnknown)
pUnknown->Release ();
if (m_pDispatch)
m_pDispatch->Release ();
return false;
}
// Return the dispatch id of a named service
// This id can be used in subsequent calls to GetProperty (), SetProperty () and
// Method (). This is the preferred method when performance is important.
//
DISPID COleAutomationControl::GetDispatchId (char* Name)
{
DISPID DispatchId;
ASSERT (m_pDispatch);
// Get DISPID of property/method
LPOLESTR OleName = TO_OLE_STR (Name);
m_hResult = m_pDispatch->GetIDsOfNames (IID_NULL, &OleName, 1,
LOCALE_USER_DEFAULT, &DispatchId);
if (FAILED (m_hResult))
return NULL;
return DispatchId;
}
// The following functions use these parameters:
//
// Parameters:
//
// Name Name of property or method.
//
// Format Format string that describes the variable list of parameters that
// follows. The format string can contain the following characters.
// & = mark the following format character as VT_BYREF
// B = VT_BOOL
// i = VT_I2
// I = VT_I4
// r = VT_R2
// R = VT_R4
// c = VT_CY
// s = VT_BSTR (string pointer can be passed,
// BSTR will be allocated by this function).
// e = VT_ERROR
// d = VT_DATE
// v = VT_VARIANT. Use this to pass data types that are not described
// in the format string. (For example SafeArrays).
// D = VT_DISPATCH
// U = VT_UNKNOWN
//
// ... Arguments of the property or method.
// Arguments are described by Format.
//
bool COleAutomationControl::GetProperty (char* Name)
{
return Invoke (DISPATCH_PROPERTYGET, Name, NULL, NULL);
}
bool COleAutomationControl::GetProperty (DISPID DispatchId)
{
return Invoke (DISPATCH_PROPERTYGET, DispatchId, NULL, NULL);
}
bool COleAutomationControl::PutProperty (char* Name, LPCTSTR Format, ...)
{
va_list ArgList;
va_start (ArgList, Format);
bool bRet = Invoke (DISPATCH_PROPERTYPUT, Name, Format, ArgList);
va_end (ArgList);
return bRet;
}
bool COleAutomationControl::PutProperty (DISPID DispatchId, LPCTSTR Format, ...)
{
va_list ArgList;
va_start (ArgList, Format);
bool bRet = Invoke (DISPATCH_PROPERTYPUT, DispatchId, Format, ArgList);
va_end (ArgList);
return bRet;
}
bool COleAutomationControl::Method (char* Name, LPCTSTR Format, ...)
{
va_list ArgList;
va_start (ArgList, Format);
bool bRet = Invoke (DISPATCH_METHOD, Name, Format, ArgList);
va_end (ArgList);
return bRet;
}
bool COleAutomationControl::Method (DISPID DispatchId, LPCTSTR Format, ...)
{
va_list ArgList;
va_start (ArgList, Format);
bool bRet = Invoke (DISPATCH_METHOD, DispatchId, Format, ArgList);
va_end (ArgList);
return bRet;
}
bool COleAutomationControl::Invoke (WORD Flags, char* Name,
LPCTSTR Format, va_list ArgList)
{
DISPID DispatchId = GetDispatchId (Name);
if (! DispatchId)
return false;
return Invoke (Flags, DispatchId, Format, ArgList);
}
bool COleAutomationControl::Invoke (WORD Flags, DISPID DispatchId,
LPCTSTR Format, va_list ArgList)
{
UINT ArgCount = 0;
VARIANTARG* ArgVector = NULL;
ASSERT (m_pDispatch);
DISPPARAMS DispatchParams;
memset (&DispatchParams, 0, sizeof (DispatchParams));
// Determine number of arguments
if (Format)
CountArgsInFormat (Format, &ArgCount);
// Property puts have a named argument that represents the value that
// the property is being assigned.
DISPID DispIdNamed = DISPID_PROPERTYPUT;
if (Flags & DISPATCH_PROPERTYPUT)
{
if (ArgCount == 0)
{
m_hResult = ResultFromScode (E_INVALIDARG);
return false;
}
DispatchParams.cNamedArgs = 1;
DispatchParams.rgdispidNamedArgs = &DispIdNamed;
}
if (ArgCount)
{
// Allocate memory for all VARIANTARG parameters
ArgVector = (VARIANTARG*) CoTaskMemAlloc (
ArgCount * sizeof (VARIANTARG));
if (! ArgVector)
{
m_hResult = ResultFromScode (E_OUTOFMEMORY);
return false;
}
memset (ArgVector, 0, sizeof (VARIANTARG) * ArgCount);
// Get ready to walk vararg list
LPCTSTR s = Format;
VARIANTARG *p = ArgVector + ArgCount - 1; // Params go in opposite order
for (;;)
{
VariantInit (p);
if (! (s = GetNextVarType (s, &p->vt)))
break;
if (p < ArgVector)
{
m_hResult = ResultFromScode (E_INVALIDARG);
goto Cleanup;
}
switch (p->vt)
{
case VT_I2:
V_I2 (p) = va_arg (ArgList, short);
break;
case VT_I4:
V_I4 (p) = va_arg (ArgList, long);
break;
case VT_R4:
V_R4 (p) = va_arg (ArgList, float);
break;
case VT_DATE:
case VT_R8:
V_R8 (p) = va_arg (ArgList, double);
break;
case VT_CY:
V_CY (p) = va_arg (ArgList, CY);
break;
case VT_BSTR:
V_BSTR (p) = SysAllocString (va_arg (ArgList,
OLECHAR*));
if (! p->bstrVal)
{
m_hResult = ResultFromScode (E_OUTOFMEMORY);
p->vt = VT_EMPTY;
goto Cleanup;
}
break;
case VT_DISPATCH:
V_DISPATCH (p) = va_arg (ArgList, LPDISPATCH);
break;
case VT_ERROR:
V_ERROR (p) = va_arg (ArgList, SCODE);
break;
case VT_BOOL:
V_BOOL (p) = va_arg (ArgList, BOOL) ? -1 : 0;
break;
case VT_VARIANT:
*p = va_arg (ArgList, VARIANTARG);
break;
case VT_UNKNOWN:
V_UNKNOWN (p) = va_arg (ArgList, LPUNKNOWN);
break;
case VT_I2 | VT_BYREF:
V_I2REF (p) = va_arg (ArgList, short*);
break;
case VT_I4 | VT_BYREF:
V_I4REF (p) = va_arg (ArgList, long*);
break;
case VT_R4 | VT_BYREF:
V_R4REF (p) = va_arg (ArgList, float*);
break;
case VT_R8 | VT_BYREF:
V_R8REF (p) = va_arg (ArgList, double*);
break;
case VT_DATE | VT_BYREF:
V_DATEREF (p) = va_arg (ArgList, DATE*);
break;
case VT_CY | VT_BYREF:
V_CYREF (p) = va_arg (ArgList, CY*);
break;
case VT_BSTR | VT_BYREF:
V_BSTRREF (p) = va_arg (ArgList, BSTR*);
break;
case VT_DISPATCH | VT_BYREF:
V_DISPATCHREF (p) = va_arg (ArgList, LPDISPATCH*);
break;
case VT_ERROR | VT_BYREF:
V_ERRORREF (p) = va_arg (ArgList, SCODE*);
break;
case VT_BOOL | VT_BYREF:
{
BOOL* pBool = va_arg (ArgList, BOOL*);
*pBool = 0;
V_BOOLREF (p) = (VARIANT_BOOL*) pBool;
}
break;
case VT_VARIANT | VT_BYREF:
V_VARIANTREF (p) = va_arg (ArgList, VARIANTARG*);
break;
case VT_UNKNOWN | VT_BYREF:
V_UNKNOWNREF (p) = va_arg (ArgList, LPUNKNOWN*);
break;
default:
{
m_hResult = ResultFromScode (E_INVALIDARG);
goto Cleanup;
}
break;
}
--p; // Get ready to fill next argument
}
}
DispatchParams.cArgs = ArgCount;
DispatchParams.rgvarg = ArgVector;
// Initialize return variant, in case caller forgot. Caller can pass
// NULL if return value is not expected.
VariantInit (&m_VariantResult);
// Make the call
m_hResult = m_pDispatch->Invoke (DispatchId, IID_NULL, LOCALE_USER_DEFAULT,
Flags, &DispatchParams, &m_VariantResult,
&m_ExceptionInfo, &m_nErrArg);
Cleanup:
// Cleanup any arguments that need cleanup
if (ArgCount)
{
VARIANTARG* p = ArgVector;
while (ArgCount--)
{
switch (p->vt)
{
case VT_BSTR:
VariantClear (p);
break;
}
++p;
}
CoTaskMemFree (ArgVector);
}
return FAILED (m_hResult) ? false : true;
}
#define CASE_SCODE(sc) \
case sc: \
lstrcpy((char*)ErrName, (char*)#sc); \
break;
void COleAutomationControl::ErrDiag ()
{
char ErrName[200];
SCODE sc = GetScode (m_hResult);
switch (sc)
{
// SCODE's defined in SCODE.H
CASE_SCODE (S_OK)
CASE_SCODE (S_FALSE)
CASE_SCODE (E_UNEXPECTED)
CASE_SCODE (E_OUTOFMEMORY)
CASE_SCODE (E_INVALIDARG)
CASE_SCODE (E_NOINTERFACE)
CASE_SCODE (E_POINTER)
CASE_SCODE (E_HANDLE)
CASE_SCODE (E_ABORT)
CASE_SCODE (E_FAIL)
CASE_SCODE (E_ACCESSDENIED)
// SCODE's defined in OLE2.H
CASE_SCODE (OLE_E_OLEVERB)
CASE_SCODE (OLE_E_ADVF)
CASE_SCODE (OLE_E_ENUM_NOMORE)
CASE_SCODE (OLE_E_ADVISENOTSUPPORTED)
CASE_SCODE (OLE_E_NOCONNECTION)
CASE_SCODE (OLE_E_NOTRUNNING)
CASE_SCODE (OLE_E_NOCACHE)
CASE_SCODE (OLE_E_BLANK)
CASE_SCODE (OLE_E_CLASSDIFF)
CASE_SCODE (OLE_E_CANT_GETMONIKER)
CASE_SCODE (OLE_E_CANT_BINDTOSOURCE)
CASE_SCODE (OLE_E_STATIC)
CASE_SCODE (OLE_E_PROMPTSAVECANCELLED)
CASE_SCODE (OLE_E_INVALIDRECT)
CASE_SCODE (OLE_E_WRONGCOMPOBJ)
CASE_SCODE (OLE_E_INVALIDHWND)
CASE_SCODE (OLE_E_NOT_INPLACEACTIVE)
CASE_SCODE (OLE_E_CANTCONVERT)
CASE_SCODE (OLE_E_NOSTORAGE)
CASE_SCODE (DV_E_FORMATETC)
CASE_SCODE (DV_E_DVTARGETDEVICE)
CASE_SCODE (DV_E_STGMEDIUM)
CASE_SCODE (DV_E_STATDATA)
CASE_SCODE (DV_E_LINDEX)
CASE_SCODE (DV_E_TYMED)
CASE_SCODE (DV_E_CLIPFORMAT)
CASE_SCODE (DV_E_DVASPECT)
CASE_SCODE (DV_E_DVTARGETDEVICE_SIZE)
CASE_SCODE (DV_E_NOIVIEWOBJECT)
CASE_SCODE (OLE_S_USEREG)
CASE_SCODE (OLE_S_STATIC)
CASE_SCODE (OLE_S_MAC_CLIPFORMAT)
CASE_SCODE (CONVERT10_E_OLESTREAM_GET)
CASE_SCODE (CONVERT10_E_OLESTREAM_PUT)
CASE_SCODE (CONVERT10_E_OLESTREAM_FMT)
CASE_SCODE (CONVERT10_E_OLESTREAM_BITMAP_TO_DIB)
CASE_SCODE (CONVERT10_E_STG_FMT)
CASE_SCODE (CONVERT10_E_STG_NO_STD_STREAM)
CASE_SCODE (CONVERT10_E_STG_DIB_TO_BITMAP)
CASE_SCODE (CONVERT10_S_NO_PRESENTATION)
CASE_SCODE (CLIPBRD_E_CANT_OPEN)
CASE_SCODE (CLIPBRD_E_CANT_EMPTY)
CASE_SCODE (CLIPBRD_E_CANT_SET)
CASE_SCODE (CLIPBRD_E_BAD_DATA)
CASE_SCODE (CLIPBRD_E_CANT_CLOSE)
CASE_SCODE (DRAGDROP_E_NOTREGISTERED)
CASE_SCODE (DRAGDROP_E_ALREADYREGISTERED)
CASE_SCODE (DRAGDROP_E_INVALIDHWND)
CASE_SCODE (DRAGDROP_S_DROP)
CASE_SCODE (DRAGDROP_S_CANCEL)
CASE_SCODE (DRAGDROP_S_USEDEFAULTCURSORS)
CASE_SCODE (OLEOBJ_E_NOVERBS)
CASE_SCODE (OLEOBJ_E_INVALIDVERB)
CASE_SCODE (OLEOBJ_S_INVALIDVERB)
CASE_SCODE (OLEOBJ_S_CANNOT_DOVERB_NOW)
CASE_SCODE (OLEOBJ_S_INVALIDHWND)
CASE_SCODE (INPLACE_E_NOTUNDOABLE)
CASE_SCODE (INPLACE_E_NOTOOLSPACE)
CASE_SCODE (INPLACE_S_TRUNCATED)
// SCODE's defined in COMPOBJ.H
CASE_SCODE (CO_E_NOTINITIALIZED)
CASE_SCODE (CO_E_ALREADYINITIALIZED)
CASE_SCODE (CO_E_CANTDETERMINECLASS)
CASE_SCODE (CO_E_CLASSSTRING)
CASE_SCODE (CO_E_IIDSTRING)
CASE_SCODE (CO_E_APPNOTFOUND)
CASE_SCODE (CO_E_APPSINGLEUSE)
CASE_SCODE (CO_E_ERRORINAPP)
CASE_SCODE (CO_E_DLLNOTFOUND)
CASE_SCODE (CO_E_ERRORINDLL)
CASE_SCODE (CO_E_WRONGOSFORAPP)
CASE_SCODE (CO_E_OBJNOTREG)
CASE_SCODE (CO_E_OBJISREG)
CASE_SCODE (CO_E_OBJNOTCONNECTED)
CASE_SCODE (CO_E_APPDIDNTREG)
CASE_SCODE (CLASS_E_NOAGGREGATION)
CASE_SCODE (CLASS_E_CLASSNOTAVAILABLE)
CASE_SCODE (REGDB_E_READREGDB)
CASE_SCODE (REGDB_E_WRITEREGDB)
CASE_SCODE (REGDB_E_KEYMISSING)
CASE_SCODE (REGDB_E_INVALIDVALUE)
CASE_SCODE (REGDB_E_CLASSNOTREG)
CASE_SCODE (REGDB_E_IIDNOTREG)
CASE_SCODE (RPC_E_CALL_REJECTED)
CASE_SCODE (RPC_E_CALL_CANCELED)
CASE_SCODE (RPC_E_CANTPOST_INSENDCALL)
CASE_SCODE (RPC_E_CANTCALLOUT_INASYNCCALL)
CASE_SCODE (RPC_E_CANTCALLOUT_INEXTERNALCALL)
CASE_SCODE (RPC_E_CONNECTION_TERMINATED)
CASE_SCODE (RPC_E_SERVER_DIED)
CASE_SCODE (RPC_E_CLIENT_DIED)
CASE_SCODE (RPC_E_INVALID_DATAPACKET)
CASE_SCODE (RPC_E_CANTTRANSMIT_CALL)
CASE_SCODE (RPC_E_CLIENT_CANTMARSHAL_DATA)
CASE_SCODE (RPC_E_CLIENT_CANTUNMARSHAL_DATA)
CASE_SCODE (RPC_E_SERVER_CANTMARSHAL_DATA)
CASE_SCODE (RPC_E_SERVER_CANTUNMARSHAL_DATA)
CASE_SCODE (RPC_E_INVALID_DATA)
CASE_SCODE (RPC_E_INVALID_PARAMETER)
CASE_SCODE (RPC_E_CANTCALLOUT_AGAIN)
CASE_SCODE (RPC_E_UNEXPECTED)
// SCODE's defined in DVOBJ.H
CASE_SCODE (DATA_S_SAMEFORMATETC)
CASE_SCODE (VIEW_E_DRAW)
CASE_SCODE (VIEW_S_ALREADY_FROZEN)
CASE_SCODE (CACHE_E_NOCACHE_UPDATED)
CASE_SCODE (CACHE_S_FORMATETC_NOTSUPPORTED)
CASE_SCODE (CACHE_S_SAMECACHE)
CASE_SCODE (CACHE_S_SOMECACHES_NOTUPDATED)
// SCODE's defined in STORAGE.H
CASE_SCODE (STG_E_INVALIDFUNCTION)
CASE_SCODE (STG_E_FILENOTFOUND)
CASE_SCODE (STG_E_PATHNOTFOUND)
CASE_SCODE (STG_E_TOOMANYOPENFILES)
CASE_SCODE (STG_E_ACCESSDENIED)
CASE_SCODE (STG_E_INVALIDHANDLE)
CASE_SCODE (STG_E_INSUFFICIENTMEMORY)
CASE_SCODE (STG_E_INVALIDPOINTER)
CASE_SCODE (STG_E_NOMOREFILES)
CASE_SCODE (STG_E_DISKISWRITEPROTECTED)
CASE_SCODE (STG_E_SEEKERROR)
CASE_SCODE (STG_E_WRITEFAULT)
CASE_SCODE (STG_E_READFAULT)
CASE_SCODE (STG_E_SHAREVIOLATION)
CASE_SCODE (STG_E_LOCKVIOLATION)
CASE_SCODE (STG_E_FILEALREADYEXISTS)
CASE_SCODE (STG_E_INVALIDPARAMETER)
CASE_SCODE (STG_E_MEDIUMFULL)
CASE_SCODE (STG_E_ABNORMALAPIEXIT)
CASE_SCODE (STG_E_INVALIDHEADER)
CASE_SCODE (STG_E_INVALIDNAME)
CASE_SCODE (STG_E_UNKNOWN)
CASE_SCODE (STG_E_UNIMPLEMENTEDFUNCTION)
CASE_SCODE (STG_E_INVALIDFLAG)
CASE_SCODE (STG_E_INUSE)
CASE_SCODE (STG_E_NOTCURRENT)
CASE_SCODE (STG_E_REVERTED)
CASE_SCODE (STG_E_CANTSAVE)
CASE_SCODE (STG_E_OLDFORMAT)
CASE_SCODE (STG_E_OLDDLL)
CASE_SCODE (STG_E_SHAREREQUIRED)
CASE_SCODE (STG_E_NOTFILEBASEDSTORAGE)
CASE_SCODE (STG_E_EXTANTMARSHALLINGS)
CASE_SCODE (STG_S_CONVERTED)
// SCODE's defined in STORAGE.H
CASE_SCODE (MK_E_CONNECTMANUALLY)
CASE_SCODE (MK_E_EXCEEDEDDEADLINE)
CASE_SCODE (MK_E_NEEDGENERIC)
CASE_SCODE (MK_E_UNAVAILABLE)
CASE_SCODE (MK_E_SYNTAX)
CASE_SCODE (MK_E_NOOBJECT)
CASE_SCODE (MK_E_INVALIDEXTENSION)
CASE_SCODE (MK_E_INTERMEDIATEINTERFACENOTSUPPORTED)
CASE_SCODE (MK_E_NOTBINDABLE)
CASE_SCODE (MK_E_NOTBOUND)
CASE_SCODE (MK_E_CANTOPENFILE)
CASE_SCODE (MK_E_MUSTBOTHERUSER)
CASE_SCODE (MK_E_NOINVERSE)
CASE_SCODE (MK_E_NOSTORAGE)
CASE_SCODE (MK_E_NOPREFIX)
CASE_SCODE (MK_S_REDUCED_TO_SELF)
CASE_SCODE (MK_S_ME)
CASE_SCODE (MK_S_HIM)
CASE_SCODE (MK_S_US)
CASE_SCODE (MK_S_MONIKERALREADYREGISTERED)
// SCODE's defined in DISPATCH.H
CASE_SCODE (DISP_E_UNKNOWNINTERFACE)
CASE_SCODE (DISP_E_MEMBERNOTFOUND)
CASE_SCODE (DISP_E_PARAMNOTFOUND)
CASE_SCODE (DISP_E_TYPEMISMATCH)
CASE_SCODE (DISP_E_UNKNOWNNAME)
CASE_SCODE (DISP_E_NONAMEDARGS)
CASE_SCODE (DISP_E_BADVARTYPE)
CASE_SCODE (DISP_E_EXCEPTION)
CASE_SCODE (DISP_E_OVERFLOW)
CASE_SCODE (DISP_E_BADINDEX)
CASE_SCODE (DISP_E_UNKNOWNLCID)
CASE_SCODE (DISP_E_ARRAYISLOCKED)
CASE_SCODE (DISP_E_BADPARAMCOUNT)
CASE_SCODE (DISP_E_PARAMNOTOPTIONAL)
CASE_SCODE (DISP_E_BADCALLEE)
CASE_SCODE (DISP_E_NOTACOLLECTION)
CASE_SCODE (TYPE_E_BUFFERTOOSMALL)
CASE_SCODE (TYPE_E_INVDATAREAD)
CASE_SCODE (TYPE_E_UNSUPFORMAT)
CASE_SCODE (TYPE_E_REGISTRYACCESS)
CASE_SCODE (TYPE_E_LIBNOTREGISTERED)
CASE_SCODE (TYPE_E_UNDEFINEDTYPE)
CASE_SCODE (TYPE_E_QUALIFIEDNAMEDISALLOWED)
CASE_SCODE (TYPE_E_INVALIDSTATE)
CASE_SCODE (TYPE_E_WRONGTYPEKIND)
CASE_SCODE (TYPE_E_ELEMENTNOTFOUND)
CASE_SCODE (TYPE_E_AMBIGUOUSNAME)
CASE_SCODE (TYPE_E_NAMECONFLICT)
CASE_SCODE (TYPE_E_UNKNOWNLCID)
CASE_SCODE (TYPE_E_DLLFUNCTIONNOTFOUND)
CASE_SCODE (TYPE_E_BADMODULEKIND)
CASE_SCODE (TYPE_E_SIZETOOBIG)
CASE_SCODE (TYPE_E_DUPLICATEID)
CASE_SCODE (TYPE_E_TYPEMISMATCH)
CASE_SCODE (TYPE_E_OUTOFBOUNDS)
CASE_SCODE (TYPE_E_IOERROR)
CASE_SCODE (TYPE_E_CANTCREATETMPFILE)
CASE_SCODE (TYPE_E_CANTLOADLIBRARY)
CASE_SCODE (TYPE_E_INCONSISTENTPROPFUNCS)
CASE_SCODE (TYPE_E_CIRCULARTYPE)
default:
lstrcpy (ErrName, "UNKNOWN SCODE");
}
char Buf[256];
sprintf (Buf, "An OLE error occured:\r\nCode = %s\r\nResult = %lx.",
(char*) ErrName, m_hResult);
MessageBox (NULL, Buf, "OLE Error", MB_OK);
}
static bool CountArgsInFormat (LPCTSTR Format, UINT* pArgCount)
{
*pArgCount = 0;
if (! Format)
return true;
while (*Format)
{
if (*Format == '&')
Format++;
switch (*Format)
{
case 'b':
case 'i':
case 'I':
case 'r':
case 'R':
case 'c':
case 's':
case 'e':
case 'd':
case 'v':
case 'D':
case 'U':
++ (*pArgCount);
Format++;
break;
case '\0':
default:
return false;
}
}
return true;
}
static LPCTSTR GetNextVarType (LPCTSTR Format, VARTYPE* pVarType)
{
*pVarType = 0;
if (*Format == '&')
{
*pVarType = VT_BYREF;
Format++;
if (!*Format)
return NULL;
}
switch (*Format)
{
case 'b':
*pVarType |= VT_BOOL;
break;
case 'i':
*pVarType |= VT_I2;
break;
case 'I':
*pVarType |= VT_I4;
break;
case 'r':
*pVarType |= VT_R4;
break;
case 'R':
*pVarType |= VT_R8;
break;
case 'c':
*pVarType |= VT_CY;
break;
case 's':
*pVarType |= VT_BSTR;
break;
case 'e':
*pVarType |= VT_ERROR;
break;
case 'd':
*pVarType |= VT_DATE;
break;
case 'v':
*pVarType |= VT_VARIANT;
break;
case 'U':
*pVarType |= VT_UNKNOWN;
break;
case 'D':
*pVarType |= VT_DISPATCH;
break;
case '\0':
return NULL; // End of Format string
default:
return NULL;
}
return ++Format;
}
#ifndef UNICODE
char* ConvertToAnsi (OLECHAR* sUnicode)
{
static char BufAscii[MAX_OLE_STR];
return ConvertToAnsiBuf (sUnicode, BufAscii);
}
char* ConvertToAnsiBuf (OLECHAR* sUnicode, char* BufAscii)
{
WideCharToMultiByte (CP_ACP, 0, sUnicode, -1, BufAscii, MAX_OLE_STR, NULL, NULL);
return BufAscii;
}
OLECHAR* ConvertToUnicode (char* sAscii)
{
static OLECHAR BufUnicode[MAX_OLE_STR];
return ConvertToUnicodeBuf (sAscii, BufUnicode);
}
OLECHAR* ConvertToUnicodeBuf (char* sAscii, OLECHAR* BufUnicode)
{
MultiByteToWideChar (CP_ACP, 0, sAscii, -1, BufUnicode, MAX_OLE_STR);
return BufUnicode;
}
#endif
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