Gdk::Window Class Reference

A Gdk::Window is a rectangular region on the screen. More...

Inherits Gdk::Drawable.

Collaboration diagram for Gdk::Window:
Collaboration graph
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List of all members.

Public Member Functions

virtual ~Window ()
GdkWindow* gobj ()
 Provides access to the underlying C GObject.
const GdkWindow* gobj () const
 Provides access to the underlying C GObject.
GdkWindow* gobj_copy ()
 Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
WindowType get_window_type () const
 Gets the type of the window.
void show ()
 Like gdk_window_show_unraised(), but also raises the window to the top of the window stack (moves the window to the front of the Z-order).
void hide ()
 For toplevel windows, withdraws them, so they will no longer be known to the window manager; for all windows, unmaps them, so they won't be displayed.
void withdraw ()
 Withdraws a window (unmaps it and asks the window manager to forget about it).
void show_unraised ()
 Shows a Gdk::Window onscreen, but does not modify its stacking order.
void move (int x, int y)
 Repositions a window relative to its parent window.
void resize (int width, int height)
 Resizes window; for toplevel windows, asks the window manager to resize the window.
void move_resize (int x, int y, int width, int height)
 Equivalent to calling gdk_window_move() and gdk_window_resize(), except that both operations are performed at once, avoiding strange visual effects.
void reparent (const Glib::RefPtr< Window >& new_parent, int x, int y)
 Reparents window into the given new_parent.
void clear ()
 Clears an entire window to the background color or background pixmap.
void clear_area (int x, int y, int width, int height)
 Clears an area of window to the background color or background pixmap.
void clear_area_e (int x, int y, int width, int height)
 Like gdk_window_clear_area(), but also generates an expose event for the cleared area.
void raise ()
 Raises window to the top of the Z-order (stacking order), so that other windows with the same parent window appear below window.
void lower ()
 Lowers window to the bottom of the Z-order (stacking order), so that other windows with the same parent window appear above window.
void restack (const Glib::RefPtr< Window >& sibling, bool above)
 Changes the position of window in the Z-order (stacking order), so that it is above sibling (if above is true) or below sibling (if above is false).
void restack (bool above)
 Changes the position of this window in the Z-order (stacking order).
void focus (guint32 timestamp)
 Sets keyboard focus to window.
void set_user_data (gpointer user_data)
 For most purposes this function is deprecated in favor of Glib::object_set_data().
void set_override_redirect (bool override_redirect=true)
 An override redirect window is not under the control of the window manager.
void add_filter (GdkFilterFunc function, gpointer data)
 Adds an event filter to window, allowing you to intercept events before they reach GDK.
void remove_filter (GdkFilterFunc function, gpointer data)
 Remove a filter previously added with gdk_window_add_filter().
void scroll (int dx, int dy)
 Scroll the contents of window, both pixels and children, by the given amount.
void move_region (const Region& region, int dx, int dy)
 Move the part of window indicated by region by dy pixels in the Y direction and dx pixels in the X direction.
bool ensure_native ()
 Tries to ensure that there is a window-system native window for this GdkWindow.
void shape_combine_mask (const Glib::RefPtr< Bitmap >& mask, int x, int y)
 Applies a shape mask to window.
void unset_shape_combine_mask ()
void shape_combine_region (const Region& shape_region, int offset_x, int offset_y)
 Makes pixels in window outside shape_region be transparent, so that the window may be nonrectangular.
void set_child_shapes ()
 Sets the shape mask of window to the union of shape masks for all children of window, ignoring the shape mask of window itself.
void set_composited (bool composited=TRUE)
 Sets a Gdk::Window as composited, or unsets it.
void merge_child_shapes ()
 Merges the shape masks for any child windows into the shape mask for window.
void input_shape_combine_mask (const Glib::RefPtr< Bitmap >& mask, int x, int y)
 Like gdk_window_shape_combine_mask(), but the shape applies only to event handling.
void input_shape_combine_region (const Region& shape_region, int offset_x, int offset_y)
 Like gdk_window_shape_combine_region(), but the shape applies only to event handling.
void set_child_input_shapes ()
 Sets the input shape mask of window to the union of input shape masks for all children of window, ignoring the input shape mask of window itself.
void merge_child_input_shapes ()
 Merges the input shape masks for any child windows into the input shape mask for window.
bool is_visible () const
 Checks whether the window has been mapped (with gdk_window_show() or gdk_window_show_unraised()).
bool is_viewable () const
 Check if the window and all ancestors of the window are mapped.
WindowState get_state () const
 Gets the bitwise OR of the currently active window state flags, from the Gdk::WindowState enumeration.
bool set_static_gravities (bool use_static=true)
 Set the bit gravity of the given window to static, and flag it so all children get static subwindow gravity.
void set_type_hint (WindowTypeHint hint)
 The application can use this call to provide a hint to the window manager about the functionality of a window.
WindowTypeHint get_type_hint ()
 This function returns the type hint set for a window.
void set_modal_hint (bool modal=true)
 The application can use this hint to tell the window manager that a certain window has modal behaviour.
void set_geometry_hints (const Geometry& geometry, WindowHints geom_mask)
 Sets the geometry hints for window.
void begin_paint_rect (Rectangle& rectangle)
 A convenience wrapper around gdk_window_begin_paint_region() which creates a rectangular region for you.
void begin_paint_region (const Region& region)
 Indicates that you are beginning the process of redrawing region.
void end_paint ()
 Indicates that the backing store created by the most recent call to gdk_window_begin_paint_region() should be copied onscreen and deleted, leaving the next-most-recent backing store or no backing store at all as the active paint region.
void flush ()
 Flush all outstanding cached operations on a window, leaving the window in a state which reflects all that has been drawn before.
void set_title (const Glib::ustring& title)
 Sets the title of a toplevel window, to be displayed in the titlebar.
void set_role (const Glib::ustring& role)
 When using GTK+, typically you should use gtk_window_set_role() instead of this low-level function.
void set_startup_id (const Glib::ustring& startup_id)
 When using GTK+, typically you should use gtk_window_set_startup_id() instead of this low-level function.
void set_transient_for (const Glib::RefPtr< Window >& parent)
 Indicates to the window manager that window is a transient dialog associated with the application window parent.
void set_background (const Color& color)
 Sets the background color of window.
void set_back_pixmap (const Glib::RefPtr< Pixmap >& pixmap, bool parent_relative=true)
 Sets the background pixmap of window.
void unset_back_pixmap ()
 Unsets the background pixmap of window so that the window will have no background.
void set_cursor (const Cursor& cursor)
 Sets the mouse pointer for a Gdk::Window.
void set_cursor ()
 Use the parent window's cursor.
void get_user_data (gpointer* data)
 Retrieves the user data for window, which is normally the widget that window belongs to.
void get_geometry (int& x, int& y, int& width, int& height, int& depth) const
 Any of the return location arguments to this function may be 0, if you aren't interested in getting the value of that field.
void get_position (int& x, int& y) const
 Obtains the position of the window as reported in the most-recently-processed Gdk::EventConfigure.
int get_origin (int& x, int& y) const
 Obtains the position of a window in root window coordinates.
void get_root_coords (int x, int y, int& root_x, int& root_y)
 Obtains the position of a window position in root window coordinates.
void get_root_origin (int& x, int& y) const
 Obtains the top-left corner of the window manager frame in root window coordinates.
void get_frame_extents (Rectangle& rect)
 Obtains the bounding box of the window, including window manager titlebar/borders if any.
Glib::RefPtr< Window > get_pointer (int& x, int& y, ModifierType& mask)
 Obtains the current pointer position and modifier state.
Glib::RefPtr< Window > get_parent ()
 Obtains the parent of window, as known to GDK.
Glib::RefPtr< const Window > get_parent () const
 Obtains the parent of window, as known to GDK.
Glib::RefPtr< Window > get_toplevel ()
 Gets the toplevel window that's an ancestor of window.
Glib::RefPtr< const Window > get_toplevel () const
 Gets the toplevel window that's an ancestor of window.
Glib::ListHandle< Glib::RefPtr
< Window > > 		get_children ()
 Gets the list of children of window known to GDK.
Glib::ListHandle< Glib::RefPtr
< const Window > > 		get_children () const
 Gets the list of children of window known to GDK.
EventMask get_events () const
 Gets the event mask for window.
void set_events (EventMask event_mask)
 The event mask for a window determines which events will be reported for that window.
void set_icon_list (const Glib::ListHandle< Glib::RefPtr< Gdk::Pixbuf > >& pixbufs)
 Sets a list of icons for the window.
void set_icon (const Glib::RefPtr< Window >& icon_window, const Glib::RefPtr< Pixmap >& pixmap, const Glib::RefPtr< Bitmap >& mask)
 Sets the icon of window as a pixmap or window.
void set_icon (const Glib::RefPtr< Window >& icon_window, const Glib::RefPtr< Pixmap >& pixmap)
void unset_icon ()
void set_icon_name (const Glib::ustring& name)
 Windows may have a name used while minimized, distinct from the name they display in their titlebar.
void set_group (const Glib::RefPtr< Window >& leader)
 Sets the group leader window for window.
Glib::RefPtr< Window > get_group ()
 Returns the group leader window for window.
Glib::RefPtr< const Window > get_group () const
 Returns the group leader window for window.
void set_decorations (WMDecoration decorations)
 "Decorations" are the features the window manager adds to a toplevel Gdk::Window.
bool get_decorations (WMDecoration& decorations) const
 Returns the decorations set on the GdkWindow with gdk_window_set_decorations.
void set_functions (WMFunction functions)
 Sets hints about the window management functions to make available via buttons on the window frame.
void beep ()
 Emits a short beep associated to window in the appropriate display, if supported.
void iconify ()
 Asks to iconify (minimize) window.
void deiconify ()
 Attempt to deiconify (unminimize) window.
void stick ()
 "Pins" a window such that it's on all workspaces and does not scroll with viewports, for window managers that have scrollable viewports.
void unstick ()
 Reverse operation for gdk_window_stick(); see gdk_window_stick(), and gtk_window_unstick().
void maximize ()
 Maximizes the window.
void unmaximize ()
 Unmaximizes the window.
void register_dnd ()
void begin_resize_drag (WindowEdge edge, int button, int root_x, int root_y, guint32 timestamp)
 Begins a window resize operation (for a toplevel window).
void begin_move_drag (int button, int root_x, int root_y, guint32 timestamp)
 Begins a window move operation (for a toplevel window).
void invalidate_rect (const Rectangle& rect, bool invalidate_children)
 A convenience wrapper around invalidate_region() which invalidates a rectangular region.
void invalidate (bool invalidate_children)
 A convenience wrapper around invalidate_region() which invalidates the whole region.
void invalidate_region (const Region& region, bool invalidate_children=true)
 Adds region to the update area for window.
Region get_update_area ()
 Transfers ownership of the update area from window to the caller of the function.
void freeze_updates ()
 Temporarily freezes a window such that it won't receive expose events.
void thaw_updates ()
 Thaws a window frozen with Gdk::Window::freeze_updates().
void process_updates (bool update_children)
 Sends one or more expose events to window.
void get_internal_paint_info (Glib::RefPtr< Drawable >& real_drawable, int& x_offset, int& y_offset) const
void enable_synchronized_configure ()
 Indicates that the application will cooperate with the window system in synchronizing the window repaint with the window manager during resizing operations.
void configure_finished ()
 Signal to the window system that the application has finished handling Configure events it has received.
void set_skip_taskbar_hint (bool skips_taskbar=true)
 Toggles whether a window should appear in a task list or window list.
void set_skip_pager_hint (bool skips_pager=true)
 Toggles whether a window should appear in a pager (workspace switcher, or other desktop utility program that displays a small thumbnail representation of the windows on the desktop).
void set_urgency_hint (bool urgent=true)
 Toggles whether a window needs the user's urgent attention.
void fullscreen ()
 Moves the window into fullscreen mode.
void unfullscreen ()
 Moves the window out of fullscreen mode.
GrabStatus pointer_grab (bool owner_events, EventMask event_mask, const Glib::RefPtr< const Window >& confine_to, const Cursor& cursor, guint32 time_)
GrabStatus pointer_grab (bool owner_events, EventMask event_mask, const Cursor& cursor, guint32 timestamp)
 Grabs the pointer to a specific window.
GrabStatus pointer_grab (bool owner_events, EventMask event_mask, guint32 timestamp)
 Grabs the pointer to a specific window.
GrabStatus keyboard_grab (bool owner_events, guint32 timestamp)
void set_keep_above (bool setting=true)
 Set if window must be kept above other windows.
void set_keep_below (bool setting=true)
 Set if window must be kept below other windows.
void set_opacity (double opacity)
 Request the windowing system to make window partially transparent, with opacity 0 being fully transparent and 1 fully opaque.
void set_accept_focus (bool accept_focus=true)
 Setting accept_focus to false hints the desktop environment that the window doesn't want to receive input focus.
void set_focus_on_map (bool focus_on_map)
 Setting focus_on_map to false hints the desktop environment that the window doesn't want to receive input focus when it is mapped.
Glib::RefPtr< Pixmap > get_offscreen_pixmap ()
 Gets the offscreen pixmap that an offscreen window renders into.
Glib::RefPtr< const Pixmap > get_offscreen_pixmap () const
 Gets the offscreen pixmap that an offscreen window renders into.
Glib::RefPtr< Window > get_offscreen_embedder ()
 Gets the window that window is embedded in.
Glib::RefPtr< const Window > get_offscreen_embedder () const
 Gets the window that window is embedded in.
void set_offscreen_embedder (const Glib::RefPtr< Window >& embedder)
 Sets window to be embedded in embedder.
void redirect_to_drawable (const Glib::RefPtr< Drawable >& drawable, int src_x, int src_y, int dest_x, int dest_y, int width, int height)
 Redirects drawing into window so that drawing to the window in the rectangle specified by src_x, src_y, width and height is also drawn into drawable at dest_x, dest_y.
void remove_redirection ()
 Removes any active redirection started by gdk_window_redirect_to_drawable().
void geometry_changed ()
 This function informs GDK that the geometry of an embedded offscreen window has changed.

Static Public Member Functions

static Glib::RefPtr< Window > create (const Glib::RefPtr< Window >& parent, GdkWindowAttr* attributes, int attributes_mask)
static void set_sm_client_id (const Glib::ustring& sm_client_id)
 Sets the SM_CLIENT_ID property on the application's leader window so that the window manager can save the application's state using the X11R6 ICCCM session management protocol.
static void unset_sm_client_id ()
static Glib::ListHandle
< Glib::RefPtr< Window > > 		get_toplevels ()
 Obtains a list of all toplevel windows known to GDK on the default screen (see gdk_window_get_toplevels_for_screen()).
static void process_all_updates ()
 Calls gdk_window_process_updates() for all windows (see Gdk::Window) in the application.
static void set_debug_updates (bool setting=true)
 With update debugging enabled, calls to gdk_window_invalidate_region() clear the invalidated region of the screen to a noticeable color, and GDK pauses for a short time before sending exposes to windows during gdk_window_process_updates().
static void constrain_size (const Geometry& geometry, guint flags, int width, int height, int& new_width, int& new_height)
 Constrains a desired width and height according to a set of geometry hints (such as minimum and maximum size).
static void pointer_ungrab (guint32 timestamp)
 Ungrabs the pointer on the default display, if it is grabbed by this application.
static void keyboard_ungrab (guint32 timestamp)
 Ungrabs the keyboard on the default display, if it is grabbed by this application.
static Glib::RefPtr< Window > get_default_root_window ()
 Obtains the root window (parent all other windows are inside) for the default display and screen.

Protected Member Functions

 Window (const Glib::RefPtr< Window >& parent, GdkWindowAttr* attributes, int attributes_mask)

Related Functions

(Note that these are not member functions.)



Glib::RefPtr< Gdk::Window > wrap (GdkWindowObject* object, bool take_copy=false)
 A Glib::wrap() method for this object.

Detailed Description

A Gdk::Window is a rectangular region on the screen.

It's a low-level object, used to implement high-level objects such as Gtk::Widget and Gtk::Window on the GTK+ level. A Gtk::Window is a toplevel window, the thing a user might think of as a "window" with a titlebar and so on; a Gtk::Window may contain many Gdk::Windows. For example, each Gtk::Button has a Gdk::Window associated with it.

Constructor & Destructor Documentation

virtual Gdk::Window::~Window (  )  [virtual]
Gdk::Window::Window ( const Glib::RefPtr< Window >&  parent,
GdkWindowAttr *  attributes,
int  attributes_mask 
) [protected]

Member Function Documentation

void Gdk::Window::add_filter ( GdkFilterFunc  function,
gpointer  data 
)

Adds an event filter to window, allowing you to intercept events before they reach GDK.

This is a low-level operation and makes it easy to break GDK and/or GTK+, so you have to know what you're doing. Pass 0 for window to get all events for all windows, instead of events for a specific window.

See Gdk::Display::add_client_message_filter() if you are interested in X ClientMessage events.

Parameters:
function Filter callback.
data Data to pass to filter callback.
void Gdk::Window::beep (  ) 

Emits a short beep associated to window in the appropriate display, if supported.

Otherwise, emits a short beep on the display just as Gdk::Display::beep().

Since gtkmm 2.12:
void Gdk::Window::begin_move_drag ( int  button,
int  root_x,
int  root_y,
guint32  timestamp 
)

Begins a window move operation (for a toplevel window).

You might use this function to implement a "window move grip," for example. The function works best with window managers that support the <ulink url="http://www.freedesktop.org/Standards/wm-spec">Extended Window Manager Hints</ulink>, but has a fallback implementation for other window managers.

Parameters:
button The button being used to drag.
root_x Root window X coordinate of mouse click that began the drag.
root_y Root window Y coordinate of mouse click that began the drag.
timestamp Timestamp of mouse click that began the drag.
void Gdk::Window::begin_paint_rect ( Rectangle&  rectangle  ) 

A convenience wrapper around gdk_window_begin_paint_region() which creates a rectangular region for you.

See gdk_window_begin_paint_region() for details.

Parameters:
rectangle Rectangle you intend to draw to.
void Gdk::Window::begin_paint_region ( const Region&  region  ) 

Indicates that you are beginning the process of redrawing region.

A backing store (offscreen buffer) large enough to contain region will be created. The backing store will be initialized with the background color or background pixmap for window. Then, all drawing operations performed on window will be diverted to the backing store. When you call gdk_window_end_paint(), the backing store will be copied to window, making it visible onscreen. Only the part of window contained in region will be modified; that is, drawing operations are clipped to region.

The net result of all this is to remove flicker, because the user sees the finished product appear all at once when you call gdk_window_end_paint(). If you draw to window directly without calling gdk_window_begin_paint_region(), the user may see flicker as individual drawing operations are performed in sequence. The clipping and background-initializing features of gdk_window_begin_paint_region() are conveniences for the programmer, so you can avoid doing that work yourself.

When using GTK+, the widget system automatically places calls to gdk_window_begin_paint_region() and gdk_window_end_paint() around emissions of the expose_event signal. That is, if you're writing an expose event handler, you can assume that the exposed area in Gdk::EventExpose has already been cleared to the window background, is already set as the clip region, and already has a backing store. Therefore in most cases, application code need not call gdk_window_begin_paint_region(). (You can disable the automatic calls around expose events on a widget-by-widget basis by calling gtk_widget_set_double_buffered().)

If you call this function multiple times before calling the matching gdk_window_end_paint(), the backing stores are pushed onto a stack. gdk_window_end_paint() copies the topmost backing store onscreen, subtracts the topmost region from all other regions in the stack, and pops the stack. All drawing operations affect only the topmost backing store in the stack. One matching call to gdk_window_end_paint() is required for each call to gdk_window_begin_paint_region().

Parameters:
region Region you intend to draw to.
void Gdk::Window::begin_resize_drag ( WindowEdge  edge,
int  button,
int  root_x,
int  root_y,
guint32  timestamp 
)

Begins a window resize operation (for a toplevel window).

You might use this function to implement a "window resize grip," for example; in fact Gtk::Statusbar uses it. The function works best with window managers that support the <ulink url="http://www.freedesktop.org/Standards/wm-spec">Extended Window Manager Hints</ulink>, but has a fallback implementation for other window managers.

Parameters:
edge The edge or corner from which the drag is started.
button The button being used to drag.
root_x Root window X coordinate of mouse click that began the drag.
root_y Root window Y coordinate of mouse click that began the drag.
timestamp Timestamp of mouse click that began the drag (use gdk_event_get_time()).
void Gdk::Window::clear (  ) 

Clears an entire window to the background color or background pixmap.

void Gdk::Window::clear_area ( int  x,
int  y,
int  width,
int  height 
)

Clears an area of window to the background color or background pixmap.

Parameters:
x X coordinate of rectangle to clear.
y Y coordinate of rectangle to clear.
width Width of rectangle to clear.
height Height of rectangle to clear.
void Gdk::Window::clear_area_e ( int  x,
int  y,
int  width,
int  height 
)

Like gdk_window_clear_area(), but also generates an expose event for the cleared area.

This function has a stupid name because it dates back to the mists time, pre-GDK-1.0.

Parameters:
x X coordinate of rectangle to clear.
y Y coordinate of rectangle to clear.
width Width of rectangle to clear.
height Height of rectangle to clear.
void Gdk::Window::configure_finished (  ) 

Signal to the window system that the application has finished handling Configure events it has received.

Window Managers can use this to better synchronize the frame repaint with the application. GTK+ applications will automatically call this function when appropriate.

This function can only be called if gdk_window_enable_synchronized_configure() was called previously.

Since gtkmm 2.6:
static void Gdk::Window::constrain_size ( const Geometry&  geometry,
guint  flags,
int  width,
int  height,
int &  new_width,
int &  new_height 
) [static]

Constrains a desired width and height according to a set of geometry hints (such as minimum and maximum size).

Parameters:
geometry A Gdk::Geometry structure.
flags A mask indicating what portions of geometry are set.
width Desired width of window.
height Desired height of the window.
new_width Location to store resulting width.
new_height Location to store resulting height.
static Glib::RefPtr<Window> Gdk::Window::create ( const Glib::RefPtr< Window >&  parent,
GdkWindowAttr *  attributes,
int  attributes_mask 
) [static]
void Gdk::Window::deiconify (  ) 

Attempt to deiconify (unminimize) window.

On X11 the window manager may choose to ignore the request to deiconify. When using GTK+, use gtk_window_deiconify() instead of the Gdk::Window variant. Or better yet, you probably want to use gtk_window_present(), which raises the window, focuses it, unminimizes it, and puts it on the current desktop.

void Gdk::Window::enable_synchronized_configure (  ) 

Indicates that the application will cooperate with the window system in synchronizing the window repaint with the window manager during resizing operations.

After an application calls this function, it must call gdk_window_configure_finished() every time it has finished all processing associated with a set of Configure events. Toplevel GTK+ windows automatically use this protocol.

On X, calling this function makes window participate in the _NET_WM_SYNC_REQUEST window manager protocol.

Since gtkmm 2.6:
void Gdk::Window::end_paint (  ) 

Indicates that the backing store created by the most recent call to gdk_window_begin_paint_region() should be copied onscreen and deleted, leaving the next-most-recent backing store or no backing store at all as the active paint region.

See gdk_window_begin_paint_region() for full details. It is an error to call this function without a matching gdk_window_begin_paint_region() first.

bool Gdk::Window::ensure_native (  ) 

Tries to ensure that there is a window-system native window for this GdkWindow.

This may fail in some situations, returning false.

Offscreen window and children of them can never have native windows.

Some backends may not support native child windows.

Since gtkmm 2.18:
Returns:
true if the window has a native window, false otherwise.
void Gdk::Window::flush (  ) 

Flush all outstanding cached operations on a window, leaving the window in a state which reflects all that has been drawn before.

Gdk uses multiple kinds of caching to get better performance and nicer drawing. For instance, during exposes all paints to a window using double buffered rendering are keep on a pixmap until the last window has been exposed. It also delays window moves/scrolls until as long as possible until next update to avoid tearing when moving windows.

Normally this should be completely invisible to applications, as we automatically flush the windows when required, but this might be needed if you for instance mix direct native drawing with gdk drawing. For Gtk widgets that don't use double buffering this will be called automatically before sending the expose event.

Since gtkmm 2.18:
void Gdk::Window::focus ( guint32  timestamp  ) 

Sets keyboard focus to window.

In most cases, gtk_window_present() should be used on a Gtk::Window, rather than calling this function.

Parameters:
timestamp Timestamp of the event triggering the window focus.
void Gdk::Window::freeze_updates (  ) 

Temporarily freezes a window such that it won't receive expose events.

The window will begin receiving expose events again when Gdk::Window::thaw_updates() is called. If Gdk::Window::freeze_updates() has been called more than once, Gdk::Window::thaw_updates() must be called an equal number of times to begin processing exposes.

void Gdk::Window::fullscreen (  ) 

Moves the window into fullscreen mode.

This means the window covers the entire screen and is above any panels or task bars.

If the window was already fullscreen, then this function does nothing.

On X11, asks the window manager to put window in a fullscreen state, if the window manager supports this operation. Not all window managers support this, and some deliberately ignore it or don't have a concept of "fullscreen"; so you can't rely on the fullscreenification actually happening. But it will happen with most standard window managers, and GDK makes a best effort to get it to happen.

Since gtkmm 2.2:
void Gdk::Window::geometry_changed (  ) 

This function informs GDK that the geometry of an embedded offscreen window has changed.

This is necessary for GDK to keep track of which offscreen window the pointer is in.

Since gtkmm 2.18:
Glib::ListHandle< Glib::RefPtr<const Window> > Gdk::Window::get_children (  )  const

Gets the list of children of window known to GDK.

This function only returns children created via GDK, so for example it's useless when used with the root window; it only returns windows an application created itself.

The returned list must be freed, but the elements in the list need not be.

Returns:
List of child windows inside window.
Glib::ListHandle< Glib::RefPtr<Window> > Gdk::Window::get_children (  ) 

Gets the list of children of window known to GDK.

This function only returns children created via GDK, so for example it's useless when used with the root window; it only returns windows an application created itself.

The returned list must be freed, but the elements in the list need not be.

Returns:
List of child windows inside window.
bool Gdk::Window::get_decorations ( WMDecoration&  decorations  )  const

Returns the decorations set on the GdkWindow with gdk_window_set_decorations.

Parameters:
decorations The window decorations will be written here.
Returns:
true if the window has decorations set, false otherwise.
static Glib::RefPtr<Window> Gdk::Window::get_default_root_window (  )  [static]

Obtains the root window (parent all other windows are inside) for the default display and screen.

Returns:
The default root window.
EventMask Gdk::Window::get_events (  )  const

Gets the event mask for window.

See gdk_window_set_events().

Returns:
Event mask for window.
void Gdk::Window::get_frame_extents ( Rectangle&  rect  ) 

Obtains the bounding box of the window, including window manager titlebar/borders if any.

The frame position is given in root window coordinates. To get the position of the window itself (rather than the frame) in root window coordinates, use gdk_window_get_origin().

Parameters:
rect Rectangle to fill with bounding box of the window frame.
void Gdk::Window::get_geometry ( int &  x,
int &  y,
int &  width,
int &  height,
int &  depth 
) const

Any of the return location arguments to this function may be 0, if you aren't interested in getting the value of that field.

The X and Y coordinates returned are relative to the parent window of window, which for toplevels usually means relative to the window decorations (titlebar, etc.) rather than relative to the root window (screen-size background window).

On the X11 platform, the geometry is obtained from the X server, so reflects the latest position of window; this may be out-of-sync with the position of window delivered in the most-recently-processed Gdk::EventConfigure. gdk_window_get_position() in contrast gets the position from the most recent configure event.

<note> If window is not a toplevel, it is <emphasis>much</emphasis> better to call gdk_window_get_position() and Gdk::Drawable::get_size() instead, because it avoids the roundtrip to the X server and because Gdk::Drawable::get_size() supports the full 32-bit coordinate space, whereas gdk_window_get_geometry() is restricted to the 16-bit coordinates of X11. </note>

Parameters:
x Return location for X coordinate of window (relative to its parent).
y Return location for Y coordinate of window (relative to its parent).
width Return location for width of window.
height Return location for height of window.
depth Return location for bit depth of window.
Glib::RefPtr<const Window> Gdk::Window::get_group (  )  const

Returns the group leader window for window.

See gdk_window_set_group().

Since gtkmm 2.4:
Returns:
The group leader window for window.
Glib::RefPtr<Window> Gdk::Window::get_group (  ) 

Returns the group leader window for window.

See gdk_window_set_group().

Since gtkmm 2.4:
Returns:
The group leader window for window.
void Gdk::Window::get_internal_paint_info ( Glib::RefPtr< Drawable >&  real_drawable,
int &  x_offset,
int &  y_offset 
) const
Glib::RefPtr<const Window> Gdk::Window::get_offscreen_embedder (  )  const

Gets the window that window is embedded in.

Since gtkmm 2.18:
Parameters:
window A Gdk::Window.
Returns:
The embedding Gdk::Window, or 0 if window is not an embedded offscreen window.
Glib::RefPtr<Window> Gdk::Window::get_offscreen_embedder (  ) 

Gets the window that window is embedded in.

Since gtkmm 2.18:
Parameters:
window A Gdk::Window.
Returns:
The embedding Gdk::Window, or 0 if window is not an embedded offscreen window.
Glib::RefPtr<const Pixmap> Gdk::Window::get_offscreen_pixmap (  )  const

Gets the offscreen pixmap that an offscreen window renders into.

If you need to keep this around over window resizes, you need to add a reference to it.

Since gtkmm 2.18:
Parameters:
window A Gdk::Window.
Returns:
The offscreen pixmap, or 0 if not offscreen.
Glib::RefPtr<Pixmap> Gdk::Window::get_offscreen_pixmap (  ) 

Gets the offscreen pixmap that an offscreen window renders into.

If you need to keep this around over window resizes, you need to add a reference to it.

Since gtkmm 2.18:
Parameters:
window A Gdk::Window.
Returns:
The offscreen pixmap, or 0 if not offscreen.
int Gdk::Window::get_origin ( int &  x,
int &  y 
) const

Obtains the position of a window in root window coordinates.

(Compare with gdk_window_get_position() and gdk_window_get_geometry() which return the position of a window relative to its parent window.)

Parameters:
x Return location for X coordinate.
y Return location for Y coordinate.
Returns:
Not meaningful, ignore.
Glib::RefPtr<const Window> Gdk::Window::get_parent (  )  const

Obtains the parent of window, as known to GDK.

Does not query the X server; thus this returns the parent as passed to gdk_window_new(), not the actual parent. This should never matter unless you're using Xlib calls mixed with GDK calls on the X11 platform. It may also matter for toplevel windows, because the window manager may choose to reparent them.

Returns:
Parent of window.
Glib::RefPtr<Window> Gdk::Window::get_parent (  ) 

Obtains the parent of window, as known to GDK.

Does not query the X server; thus this returns the parent as passed to gdk_window_new(), not the actual parent. This should never matter unless you're using Xlib calls mixed with GDK calls on the X11 platform. It may also matter for toplevel windows, because the window manager may choose to reparent them.

Returns:
Parent of window.
Glib::RefPtr<Window> Gdk::Window::get_pointer ( int &  x,
int &  y,
ModifierType&  mask 
)

Obtains the current pointer position and modifier state.

The position is given in coordinates relative to the upper left corner of window.

Parameters:
x Return location for X coordinate of pointer or 0 to not return the X coordinate.
y Return location for Y coordinate of pointer or 0 to not return the Y coordinate.
mask Return location for modifier mask or 0 to not return the modifier mask.
Returns:
The window containing the pointer (as with gdk_window_at_pointer()), or 0 if the window containing the pointer isn't known to GDK.
void Gdk::Window::get_position ( int &  x,
int &  y 
) const

Obtains the position of the window as reported in the most-recently-processed Gdk::EventConfigure.

Contrast with gdk_window_get_geometry() which queries the X server for the current window position, regardless of which events have been received or processed.

The position coordinates are relative to the window's parent window.

Parameters:
x X coordinate of window.
y Y coordinate of window.
void Gdk::Window::get_root_coords ( int  x,
int  y,
int &  root_x,
int &  root_y 
)

Obtains the position of a window position in root window coordinates.

This is similar to gdk_window_get_origin() but allows you go pass in any position in the window, not just the origin.

Since gtkmm 2.18:
Parameters:
x X coordinate in window.
y Y coordinate in window.
root_x Return location for X coordinate.
root_y Return location for Y coordinate.
void Gdk::Window::get_root_origin ( int &  x,
int &  y 
) const

Obtains the top-left corner of the window manager frame in root window coordinates.

Parameters:
x Return location for X position of window frame.
y Return location for Y position of window frame.
WindowState Gdk::Window::get_state (  )  const

Gets the bitwise OR of the currently active window state flags, from the Gdk::WindowState enumeration.

Returns:
Window state bitfield.
Glib::RefPtr<const Window> Gdk::Window::get_toplevel (  )  const

Gets the toplevel window that's an ancestor of window.

Any window type but Gdk::WINDOW_CHILD is considered a toplevel window, as is a Gdk::WINDOW_CHILD window that has a root window as parent.

Returns:
The toplevel window containing window.
Glib::RefPtr<Window> Gdk::Window::get_toplevel (  ) 

Gets the toplevel window that's an ancestor of window.

Any window type but Gdk::WINDOW_CHILD is considered a toplevel window, as is a Gdk::WINDOW_CHILD window that has a root window as parent.

Returns:
The toplevel window containing window.
static Glib::ListHandle< Glib::RefPtr<Window> > Gdk::Window::get_toplevels (  )  [static]

Obtains a list of all toplevel windows known to GDK on the default screen (see gdk_window_get_toplevels_for_screen()).

A toplevel window is a child of the root window (see gdk_get_default_root_window()).

Returns:
List of toplevel windows.
WindowTypeHint Gdk::Window::get_type_hint (  ) 

This function returns the type hint set for a window.

Since gtkmm 2.10:
Returns:
The type hint set for window.
Region Gdk::Window::get_update_area (  ) 

Transfers ownership of the update area from window to the caller of the function.

That is, after calling this function, window will no longer have an invalid/dirty region; the update area is removed from window and handed to you. If a window has no update area, get_update_area() returns an invalid Region.

Returns:
The update area for window.
void Gdk::Window::get_user_data ( gpointer *  data  ) 

Retrieves the user data for window, which is normally the widget that window belongs to.

See gdk_window_set_user_data().

Parameters:
data Return location for user data.
WindowType Gdk::Window::get_window_type (  )  const

Gets the type of the window.

See Gdk::WindowType.

Returns:
Type of window.
const GdkWindow* Gdk::Window::gobj (  )  const [inline]

Provides access to the underlying C GObject.

Reimplemented from Gdk::Drawable.

GdkWindow* Gdk::Window::gobj (  )  [inline]

Provides access to the underlying C GObject.

Reimplemented from Gdk::Drawable.

GdkWindow* Gdk::Window::gobj_copy (  ) 

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

Reimplemented from Gdk::Drawable.

void Gdk::Window::hide (  ) 

For toplevel windows, withdraws them, so they will no longer be known to the window manager; for all windows, unmaps them, so they won't be displayed.

Normally done automatically as part of gtk_widget_hide().

void Gdk::Window::iconify (  ) 

Asks to iconify (minimize) window.

The window manager may choose to ignore the request, but normally will honor it. Using gtk_window_iconify() is preferred, if you have a Gtk::Window widget.

This function only makes sense when window is a toplevel window.

void Gdk::Window::input_shape_combine_mask ( const Glib::RefPtr< Bitmap >&  mask,
int  x,
int  y 
)

Like gdk_window_shape_combine_mask(), but the shape applies only to event handling.

Mouse events which happen while the pointer position corresponds to an unset bit in the mask will be passed on the window below window.

An input shape is typically used with RGBA windows. The alpha channel of the window defines which pixels are invisible and allows for nicely antialiased borders, and the input shape controls where the window is "clickable".

On the X11 platform, this requires version 1.1 of the shape extension.

On the Win32 platform, this functionality is not present and the function does nothing.

Since gtkmm 2.10:
Parameters:
mask Shape mask, or 0.
x X position of shape mask with respect to window.
y Y position of shape mask with respect to window.
void Gdk::Window::input_shape_combine_region ( const Region&  shape_region,
int  offset_x,
int  offset_y 
)

Like gdk_window_shape_combine_region(), but the shape applies only to event handling.

Mouse events which happen while the pointer position corresponds to an unset bit in the mask will be passed on the window below window.

An input shape is typically used with RGBA windows. The alpha channel of the window defines which pixels are invisible and allows for nicely antialiased borders, and the input shape controls where the window is "clickable".

On the X11 platform, this requires version 1.1 of the shape extension.

On the Win32 platform, this functionality is not present and the function does nothing.

Since gtkmm 2.10:
Parameters:
shape_region Region of window to be non-transparent.
offset_x X position of shape_region in window coordinates.
offset_y Y position of shape_region in window coordinates.
void Gdk::Window::invalidate ( bool  invalidate_children  ) 

A convenience wrapper around invalidate_region() which invalidates the whole region.

See invalidate_region() for details.

Parameters:
invalidate_children Whether to also invalidate child windows.
void Gdk::Window::invalidate_rect ( const Rectangle&  rect,
bool  invalidate_children 
)

A convenience wrapper around invalidate_region() which invalidates a rectangular region.

See invalidate_region() for details. See also the invalidate_rect() method overload with no rect parameter, to invalidate the whole region.

Parameters:
rect Rectangle to invalidate.
invalidate_children Whether to also invalidate child windows.
void Gdk::Window::invalidate_region ( const Region&  region,
bool  invalidate_children = true 
)

Adds region to the update area for window.

The update area is the region that needs to be redrawn, or "dirty region." The call gdk_window_process_updates() sends one or more expose events to the window, which together cover the entire update area. An application would normally redraw the contents of window in response to those expose events.

GDK will call gdk_window_process_all_updates() on your behalf whenever your program returns to the main loop and becomes idle, so normally there's no need to do that manually, you just need to invalidate regions that you know should be redrawn.

The invalidate_children parameter controls whether the region of each child window that intersects region will also be invalidated. If false, then the update area for child windows will remain unaffected. See gdk_window_invalidate_maybe_recurse if you need fine grained control over which children are invalidated.

Parameters:
region A Gdk::Region.
invalidate_children true to also invalidate child windows.
bool Gdk::Window::is_viewable (  )  const

Check if the window and all ancestors of the window are mapped.

(This is not necessarily "viewable" in the X sense, since we only check as far as we have GDK window parents, not to the root window.)

Returns:
true if the window is viewable.
bool Gdk::Window::is_visible (  )  const

Checks whether the window has been mapped (with gdk_window_show() or gdk_window_show_unraised()).

Returns:
true if the window is mapped.
GrabStatus Gdk::Window::keyboard_grab ( bool  owner_events,
guint32  timestamp 
)
static void Gdk::Window::keyboard_ungrab ( guint32  timestamp  )  [static]

Ungrabs the keyboard on the default display, if it is grabbed by this application.

Parameters:
timestamp A timestamp from a Gdk::Event, or Gdk::CURRENT_TIME if no timestamp is available.
void Gdk::Window::lower (  ) 

Lowers window to the bottom of the Z-order (stacking order), so that other windows with the same parent window appear above window.

This is true whether or not the other windows are visible.

If window is a toplevel, the window manager may choose to deny the request to move the window in the Z-order, gdk_window_lower() only requests the restack, does not guarantee it.

Note that gdk_window_show() raises the window again, so don't call this function before gdk_window_show(). (Try gdk_window_show_unraised().)

void Gdk::Window::maximize (  ) 

Maximizes the window.

If the window was already maximized, then this function does nothing.

On X11, asks the window manager to maximize window, if the window manager supports this operation. Not all window managers support this, and some deliberately ignore it or don't have a concept of "maximized"; so you can't rely on the maximization actually happening. But it will happen with most standard window managers, and GDK makes a best effort to get it to happen.

On Windows, reliably maximizes the window.

void Gdk::Window::merge_child_input_shapes (  ) 

Merges the input shape masks for any child windows into the input shape mask for window.

i.e. the union of all input masks for window and its children will become the new input mask for window. See gdk_window_input_shape_combine_mask().

This function is distinct from gdk_window_set_child_input_shapes() because it includes window's input shape mask in the set of shapes to be merged.

Since gtkmm 2.10:
void Gdk::Window::merge_child_shapes (  ) 

Merges the shape masks for any child windows into the shape mask for window.

i.e. the union of all masks for window and its children will become the new mask for window. See gdk_window_shape_combine_mask().

This function is distinct from gdk_window_set_child_shapes() because it includes window's shape mask in the set of shapes to be merged.

void Gdk::Window::move ( int  x,
int  y 
)

Repositions a window relative to its parent window.

For toplevel windows, window managers may ignore or modify the move; you should probably use gtk_window_move() on a Gtk::Window widget anyway, instead of using GDK functions. For child windows, the move will reliably succeed.

If you're also planning to resize the window, use gdk_window_move_resize() to both move and resize simultaneously, for a nicer visual effect.

Parameters:
x X coordinate relative to window's parent.
y Y coordinate relative to window's parent.
void Gdk::Window::move_region ( const Region&  region,
int  dx,
int  dy 
)

Move the part of window indicated by region by dy pixels in the Y direction and dx pixels in the X direction.

The portions of region that not covered by the new position of region are invalidated.

Child windows are not moved.

Since gtkmm 2.8:
Parameters:
region The Gdk::Region to move.
dx Amount to move in the X direction.
dy Amount to move in the Y direction.
void Gdk::Window::move_resize ( int  x,
int  y,
int  width,
int  height 
)

Equivalent to calling gdk_window_move() and gdk_window_resize(), except that both operations are performed at once, avoiding strange visual effects.

(i.e. the user may be able to see the window first move, then resize, if you don't use gdk_window_move_resize().)

Parameters:
x New X position relative to window's parent.
y New Y position relative to window's parent.
width New width.
height New height.
GrabStatus Gdk::Window::pointer_grab ( bool  owner_events,
EventMask  event_mask,
guint32  timestamp 
)

Grabs the pointer to a specific window.

Requires a corresponding call to pointer_ungrab().

Arguments:

Parameters:
owner_events Specifies whether events will be reported as is, or relative to the window.
event_mask Masks only interesting events.
timestamp Specifies the time.
GrabStatus Gdk::Window::pointer_grab ( bool  owner_events,
EventMask  event_mask,
const Cursor&  cursor,
guint32  timestamp 
)

Grabs the pointer to a specific window.

Requires a corresponding call to pointer_ungrab().

Arguments:

Parameters:
owner_events Specifies whether events will be reported as is, or relative to the window.
event_mask Masks only interesting events.
cursor Changes the cursor for the duration of the grab.
timestamp Specifies the time.
GrabStatus Gdk::Window::pointer_grab ( bool  owner_events,
EventMask  event_mask,
const Glib::RefPtr< const Window >&  confine_to,
const Cursor&  cursor,
guint32  time_ 
)
static void Gdk::Window::pointer_ungrab ( guint32  timestamp  )  [static]

Ungrabs the pointer on the default display, if it is grabbed by this application.

Parameters:
timestamp A timestamp from a Gdk::Event, or Gdk::CURRENT_TIME if no timestamp is available.
static void Gdk::Window::process_all_updates (  )  [static]

Calls gdk_window_process_updates() for all windows (see Gdk::Window) in the application.

void Gdk::Window::process_updates ( bool  update_children  ) 

Sends one or more expose events to window.

The areas in each expose event will cover the entire update area for the window (see gdk_window_invalidate_region() for details). Normally GDK calls gdk_window_process_all_updates() on your behalf, so there's no need to call this function unless you want to force expose events to be delivered immediately and synchronously (vs. the usual case, where GDK delivers them in an idle handler). Occasionally this is useful to produce nicer scrolling behavior, for example.

Parameters:
update_children Whether to also process updates for child windows.
void Gdk::Window::raise (  ) 

Raises window to the top of the Z-order (stacking order), so that other windows with the same parent window appear below window.

This is true whether or not the windows are visible.

If window is a toplevel, the window manager may choose to deny the request to move the window in the Z-order, gdk_window_raise() only requests the restack, does not guarantee it.

void Gdk::Window::redirect_to_drawable ( const Glib::RefPtr< Drawable >&  drawable,
int  src_x,
int  src_y,
int  dest_x,
int  dest_y,
int  width,
int  height 
)

Redirects drawing into window so that drawing to the window in the rectangle specified by src_x, src_y, width and height is also drawn into drawable at dest_x, dest_y.

Only drawing between gdk_window_begin_paint_region() or gdk_window_begin_paint_rect() and gdk_window_end_paint() is redirected.

Redirection is active until gdk_window_remove_redirection() is called.

Since gtkmm 2.14:
Parameters:
drawable A Gdk::Drawable.
src_x X position in window.
src_y Y position in window.
dest_x X position in drawable.
dest_y Y position in drawable.
width Width of redirection, or -1 to use the width of window.
height Height of redirection or -1 to use the height of window.
void Gdk::Window::register_dnd (  ) 
void Gdk::Window::remove_filter ( GdkFilterFunc  function,
gpointer  data 
)

Remove a filter previously added with gdk_window_add_filter().

Parameters:
function Previously-added filter function.
data User data for previously-added filter function.
void Gdk::Window::remove_redirection (  ) 

Removes any active redirection started by gdk_window_redirect_to_drawable().

Since gtkmm 2.14:
void Gdk::Window::reparent ( const Glib::RefPtr< Window >&  new_parent,
int  x,
int  y 
)

Reparents window into the given new_parent.

The window being reparented will be unmapped as a side effect.

Parameters:
new_parent New parent to move window into.
x X location inside the new parent.
y Y location inside the new parent.
void Gdk::Window::resize ( int  width,
int  height 
)

Resizes window; for toplevel windows, asks the window manager to resize the window.

The window manager may not allow the resize. When using GTK+, use gtk_window_resize() instead of this low-level GDK function.

Windows may not be resized below 1x1.

If you're also planning to move the window, use gdk_window_move_resize() to both move and resize simultaneously, for a nicer visual effect.

Parameters:
width New width of the window.
height New height of the window.
void Gdk::Window::restack ( bool  above  ) 

Changes the position of this window in the Z-order (stacking order).

This either raises (if above is true) or lowers the window.

If this is a toplevel, the window manager may choose to deny the request to move the window in the Z-order. restack() only requests the restack but does not guarantee it.

Parameters:
above Whether to raise or lower the window.
Since gtkmm 2.18:
void Gdk::Window::restack ( const Glib::RefPtr< Window >&  sibling,
bool  above 
)

Changes the position of window in the Z-order (stacking order), so that it is above sibling (if above is true) or below sibling (if above is false).

If sibling is 0, then this either raises (if above is true) or lowers the window.

If window is a toplevel, the window manager may choose to deny the request to move the window in the Z-order, gdk_window_restack() only requests the restack, does not guarantee it.

Since gtkmm 2.18:
Parameters:
sibling A Gdk::Window that is a sibling of window, or 0.
above A boolean.
void Gdk::Window::scroll ( int  dx,
int  dy 
)

Scroll the contents of window, both pixels and children, by the given amount.

window itself does not move. Portions of the window that the scroll operation brings in from offscreen areas are invalidated. The invalidated region may be bigger than what would strictly be necessary.

For X11, a minimum area will be invalidated if the window has no subwindows, or if the edges of the window's parent do not extend beyond the edges of the window. In other cases, a multi-step process is used to scroll the window which may produce temporary visual artifacts and unnecessary invalidations.

Parameters:
dx Amount to scroll in the X direction.
dy Amount to scroll in the Y direction.
void Gdk::Window::set_accept_focus ( bool  accept_focus = true  ) 

Setting accept_focus to false hints the desktop environment that the window doesn't want to receive input focus.

On X, it is the responsibility of the window manager to interpret this hint. ICCCM-compliant window manager usually respect it.

Since gtkmm 2.4:
Parameters:
accept_focus true if the window should receive input focus.
void Gdk::Window::set_back_pixmap ( const Glib::RefPtr< Pixmap >&  pixmap,
bool  parent_relative = true 
)

Sets the background pixmap of window.

A background pixmap will be tiled, positioning the first tile at the origin of window, or if parent_relative is true, the tiling will be done based on the origin of the parent window (useful to align tiles in a parent with tiles in a child).

The windowing system will normally fill a window with its background when the window is obscured then exposed, and when you call gdk_window_clear().

See also unset_back_pixmap().

Parameters:
pixmap A Gdk::Pixmap.
parent_relative Whether the tiling origin is at the origin of window's parent.
void Gdk::Window::set_background ( const Color&  color  ) 

Sets the background color of window.

(However, when using GTK+, set the background of a widget with gtk_widget_modify_bg() - if you're an application - or gtk_style_set_background() - if you're implementing a custom widget.)

The color must be allocated; gdk_rgb_find_color() is the best way to allocate a color.

See also gdk_window_set_back_pixmap().

Parameters:
color An allocated Gdk::Color.
void Gdk::Window::set_child_input_shapes (  ) 

Sets the input shape mask of window to the union of input shape masks for all children of window, ignoring the input shape mask of window itself.

Contrast with gdk_window_merge_child_input_shapes() which includes the input shape mask of window in the masks to be merged.

Since gtkmm 2.10:
void Gdk::Window::set_child_shapes (  ) 

Sets the shape mask of window to the union of shape masks for all children of window, ignoring the shape mask of window itself.

Contrast with gdk_window_merge_child_shapes() which includes the shape mask of window in the masks to be merged.

void Gdk::Window::set_composited ( bool  composited = TRUE  ) 

Sets a Gdk::Window as composited, or unsets it.

Composited windows do not automatically have their contents drawn to the screen. Drawing is redirected to an offscreen buffer and an expose event is emitted on the parent of the composited window. It is the responsibility of the parent's expose handler to manually merge the off-screen content onto the screen in whatever way it sees fit. See <xref linkend="composited-window-example"> for an example.

It only makes sense for child windows to be composited; see gdk_window_set_opacity() if you need translucent toplevel windows.

An additional effect of this call is that the area of this window is no longer clipped from regions marked for invalidation on its parent. Draws done on the parent window are also no longer clipped by the child.

This call is only supported on some systems (currently, only X11 with new enough Xcomposite and Xdamage extensions). You must call Gdk::Display::supports_composite() to check if setting a window as composited is supported before attempting to do so.

Since gtkmm 2.12:
Parameters:
composited true to set the window as composited.
void Gdk::Window::set_cursor (  ) 

Use the parent window's cursor.

For top-level windows this means that it will use the default cursor for the ROOT window.

void Gdk::Window::set_cursor ( const Cursor&  cursor  ) 

Sets the mouse pointer for a Gdk::Window.

To make the cursor invisible, use gdk_cursor_new_from_pixmap() to create a cursor with no pixels in it.

Parameters:
cursor A cursor.
static void Gdk::Window::set_debug_updates ( bool  setting = true  )  [static]

With update debugging enabled, calls to gdk_window_invalidate_region() clear the invalidated region of the screen to a noticeable color, and GDK pauses for a short time before sending exposes to windows during gdk_window_process_updates().

The net effect is that you can see the invalid region for each window and watch redraws as they occur. This allows you to diagnose inefficiencies in your application.

In essence, because the GDK rendering model prevents all flicker, if you are redrawing the same region 400 times you may never notice, aside from noticing a speed problem. Enabling update debugging causes GTK to flicker slowly and noticeably, so you can see exactly what's being redrawn when, in what order.

The --gtk-debug=updates command line option passed to GTK+ programs enables this debug option at application startup time. That's usually more useful than calling gdk_window_set_debug_updates() yourself, though you might want to use this function to enable updates sometime after application startup time.

Parameters:
setting true to turn on update debugging.
void Gdk::Window::set_decorations ( WMDecoration  decorations  ) 

"Decorations" are the features the window manager adds to a toplevel Gdk::Window.

This function sets the traditional Motif window manager hints that tell the window manager which decorations you would like your window to have. Usually you should use gtk_window_set_decorated() on a Gtk::Window instead of using the GDK function directly.

The decorations argument is the logical OR of the fields in the Gdk::WMDecoration enumeration. If Gdk::DECOR_ALL is included in the mask, the other bits indicate which decorations should be turned off. If Gdk::DECOR_ALL is not included, then the other bits indicate which decorations should be turned on.

Most window managers honor a decorations hint of 0 to disable all decorations, but very few honor all possible combinations of bits.

Parameters:
decorations Decoration hint mask.
void Gdk::Window::set_events ( EventMask  event_mask  ) 

The event mask for a window determines which events will be reported for that window.

For example, an event mask including Gdk::BUTTON_PRESS_MASK means the window should report button press events. The event mask is the bitwise OR of values from the Gdk::EventMask enumeration.

Parameters:
event_mask Event mask for window.
void Gdk::Window::set_focus_on_map ( bool  focus_on_map  ) 

Setting focus_on_map to false hints the desktop environment that the window doesn't want to receive input focus when it is mapped.

focus_on_map should be turned off for windows that aren't triggered interactively (such as popups from network activity).

On X, it is the responsibility of the window manager to interpret this hint. Window managers following the freedesktop.org window manager extension specification should respect it.

Since gtkmm 2.6:
Parameters:
focus_on_map true if the window should receive input focus when mapped.
void Gdk::Window::set_functions ( WMFunction  functions  ) 

Sets hints about the window management functions to make available via buttons on the window frame.

On the X backend, this function sets the traditional Motif window manager hint for this purpose. However, few window managers do anything reliable or interesting with this hint. Many ignore it entirely.

The functions argument is the logical OR of values from the Gdk::WMFunction enumeration. If the bitmask includes Gdk::FUNC_ALL, then the other bits indicate which functions to disable; if it doesn't include Gdk::FUNC_ALL, it indicates which functions to enable.

Parameters:
functions Bitmask of operations to allow on window.
void Gdk::Window::set_geometry_hints ( const Geometry&  geometry,
WindowHints  geom_mask 
)

Sets the geometry hints for window.

Hints flagged in geom_mask are set, hints not flagged in geom_mask are unset. To unset all hints, use a geom_mask of 0 and a geometry of 0.

This function provides hints to the windowing system about acceptable sizes for a toplevel window. The purpose of this is to constrain user resizing, but the windowing system will typically (but is not required to) also constrain the current size of the window to the provided values and constrain programatic resizing via gdk_window_resize() or gdk_window_move_resize().

Note that on X11, this effect has no effect on windows of type Gdk::WINDOW_TEMP or windows where override redirect has been turned on via gdk_window_set_override_redirect() since these windows are not resizable by the user.

Since you can't count on the windowing system doing the constraints for programmatic resizes, you should generally call gdk_window_constrain_size() yourself to determine appropriate sizes.

Parameters:
geometry Geometry hints.
geom_mask Bitmask indicating fields of geometry to pay attention to.
void Gdk::Window::set_group ( const Glib::RefPtr< Window >&  leader  ) 

Sets the group leader window for window.

By default, GDK sets the group leader for all toplevel windows to a global window implicitly created by GDK. With this function you can override this default.

The group leader window allows the window manager to distinguish all windows that belong to a single application. It may for example allow users to minimize/unminimize all windows belonging to an application at once. You should only set a non-default group window if your application pretends to be multiple applications.

Parameters:
leader Group leader window, or 0 to restore the default group leader window.
void Gdk::Window::set_icon ( const Glib::RefPtr< Window >&  icon_window,
const Glib::RefPtr< Pixmap >&  pixmap 
)
void Gdk::Window::set_icon ( const Glib::RefPtr< Window >&  icon_window,
const Glib::RefPtr< Pixmap >&  pixmap,
const Glib::RefPtr< Bitmap >&  mask 
)

Sets the icon of window as a pixmap or window.

If using GTK+, investigate gtk_window_set_default_icon_list() first, and then gtk_window_set_icon_list() and gtk_window_set_icon(). If those don't meet your needs, look at gdk_window_set_icon_list(). Only if all those are too high-level do you want to fall back to gdk_window_set_icon().

Parameters:
icon_window A Gdk::Window to use for the icon.
pixmap A Gdk::Pixmap to use as the icon,.
mask A 1-bit pixmap (Gdk::Bitmap) to use as mask for pixmap.
void Gdk::Window::set_icon_list ( const Glib::ListHandle< Glib::RefPtr< Gdk::Pixbuf > >&  pixbufs  ) 

Sets a list of icons for the window.

One of these will be used to represent the window when it has been iconified. The icon is usually shown in an icon box or some sort of task bar. Which icon size is shown depends on the window manager. The window manager can scale the icon but setting several size icons can give better image quality since the window manager may only need to scale the icon by a small amount or not at all.

Parameters:
pixbufs A list of pixbufs, of different sizes.
void Gdk::Window::set_icon_name ( const Glib::ustring &  name  ) 

Windows may have a name used while minimized, distinct from the name they display in their titlebar.

Most of the time this is a bad idea from a user interface standpoint. But you can set such a name with this function, if you like.

After calling this with a non-0 name, calls to gdk_window_set_title() will not update the icon title.

Using 0 for name unsets the icon title; further calls to gdk_window_set_title() will again update the icon title as well.

Parameters:
name Name of window while iconified (minimized).
void Gdk::Window::set_keep_above ( bool  setting = true  ) 

Set if window must be kept above other windows.

If the window was already above, then this function does nothing.

On X11, asks the window manager to keep window above, if the window manager supports this operation. Not all window managers support this, and some deliberately ignore it or don't have a concept of "keep above"; so you can't rely on the window being kept above. But it will happen with most standard window managers, and GDK makes a best effort to get it to happen.

Since gtkmm 2.4:
Parameters:
setting Whether to keep window above other windows.
void Gdk::Window::set_keep_below ( bool  setting = true  ) 

Set if window must be kept below other windows.

If the window was already below, then this function does nothing.

On X11, asks the window manager to keep window below, if the window manager supports this operation. Not all window managers support this, and some deliberately ignore it or don't have a concept of "keep below"; so you can't rely on the window being kept below. But it will happen with most standard window managers, and GDK makes a best effort to get it to happen.

Since gtkmm 2.4:
Parameters:
setting Whether to keep window below other windows.
void Gdk::Window::set_modal_hint ( bool  modal = true  ) 

The application can use this hint to tell the window manager that a certain window has modal behaviour.

The window manager can use this information to handle modal windows in a special way.

You should only use this on windows for which you have previously called gdk_window_set_transient_for()

Parameters:
modal true if the window is modal, false otherwise.
void Gdk::Window::set_offscreen_embedder ( const Glib::RefPtr< Window >&  embedder  ) 

Sets window to be embedded in embedder.

To fully embed an offscreen window, in addition to calling this function, it is also necessary to handle the Gdk::Window::pick-embedded-child signal on the embedder and the Gdk::Window::to-embedder and Gdk::Window::from-embedder signals on window.

Since gtkmm 2.18:
Parameters:
window A Gdk::Window.
embedder The Gdk::Window that window gets embedded in.
void Gdk::Window::set_opacity ( double  opacity  ) 

Request the windowing system to make window partially transparent, with opacity 0 being fully transparent and 1 fully opaque.

(Values of the opacity parameter are clamped to the [0,1] range.)

On X11, this works only on X screens with a compositing manager running.

For setting up per-pixel alpha, see Gdk::Screen::get_rgba_colormap(). For making non-toplevel windows translucent, see gdk_window_set_composited().

Since gtkmm 2.12:
Parameters:
opacity Opacity.
void Gdk::Window::set_override_redirect ( bool  override_redirect = true  ) 

An override redirect window is not under the control of the window manager.

This means it won't have a titlebar, won't be minimizable, etc. - it will be entirely under the control of the application. The window manager can't see the override redirect window at all.

Override redirect should only be used for short-lived temporary windows, such as popup menus. Gtk::Menu uses an override redirect window in its implementation, for example.

Parameters:
override_redirect true if window should be override redirect.
void Gdk::Window::set_role ( const Glib::ustring &  role  ) 

When using GTK+, typically you should use gtk_window_set_role() instead of this low-level function.

The window manager and session manager use a window's role to distinguish it from other kinds of window in the same application. When an application is restarted after being saved in a previous session, all windows with the same title and role are treated as interchangeable. So if you have two windows with the same title that should be distinguished for session management purposes, you should set the role on those windows. It doesn't matter what string you use for the role, as long as you have a different role for each non-interchangeable kind of window.

Parameters:
role A string indicating its role.
void Gdk::Window::set_skip_pager_hint ( bool  skips_pager = true  ) 

Toggles whether a window should appear in a pager (workspace switcher, or other desktop utility program that displays a small thumbnail representation of the windows on the desktop).

If a window's semantic type as specified with gdk_window_set_type_hint() already fully describes the window, this function should <emphasis>not</emphasis> be called in addition, instead you should allow the window to be treated according to standard policy for its semantic type.

Since gtkmm 2.2:
Parameters:
skips_pager true to skip the pager.
void Gdk::Window::set_skip_taskbar_hint ( bool  skips_taskbar = true  ) 

Toggles whether a window should appear in a task list or window list.

If a window's semantic type as specified with gdk_window_set_type_hint() already fully describes the window, this function should <emphasis>not</emphasis> be called in addition, instead you should allow the window to be treated according to standard policy for its semantic type.

Since gtkmm 2.2:
Parameters:
skips_taskbar true to skip the taskbar.
static void Gdk::Window::set_sm_client_id ( const Glib::ustring &  sm_client_id  )  [static]

Sets the SM_CLIENT_ID property on the application's leader window so that the window manager can save the application's state using the X11R6 ICCCM session management protocol.

See the X Session Management Library documentation for more information on session management and the Inter-Client Communication Conventions Manual (ICCCM) for information on the WM_CLIENT_LEADER property. (Both documents are part of the X Window System distribution.)

Parameters:
sm_client_id The client id assigned by the session manager when the connection was opened.
void Gdk::Window::set_startup_id ( const Glib::ustring &  startup_id  ) 

When using GTK+, typically you should use gtk_window_set_startup_id() instead of this low-level function.

Since gtkmm 2.12:
Parameters:
startup_id A string with startup-notification identifier.
bool Gdk::Window::set_static_gravities ( bool  use_static = true  ) 

Set the bit gravity of the given window to static, and flag it so all children get static subwindow gravity.

This is used if you are implementing scary features that involve deep knowledge of the windowing system. Don't worry about it unless you have to.

Parameters:
use_static true to turn on static gravity.
Returns:
true if the server supports static gravity.
void Gdk::Window::set_title ( const Glib::ustring &  title  ) 

Sets the title of a toplevel window, to be displayed in the titlebar.

If you haven't explicitly set the icon name for the window (using gdk_window_set_icon_name()), the icon name will be set to title as well. title must be in UTF-8 encoding (as with all user-readable strings in GDK/GTK+). title may not be 0.

Parameters:
title Title of window.
void Gdk::Window::set_transient_for ( const Glib::RefPtr< Window >&  parent  ) 

Indicates to the window manager that window is a transient dialog associated with the application window parent.

This allows the window manager to do things like center window on parent and keep window above parent.

See gtk_window_set_transient_for() if you're using Gtk::Window or Gtk::Dialog.

Parameters:
parent Another toplevel Gdk::Window.
void Gdk::Window::set_type_hint ( WindowTypeHint  hint  ) 

The application can use this call to provide a hint to the window manager about the functionality of a window.

The window manager can use this information when determining the decoration and behaviour of the window.

The hint must be set before the window is mapped.

Parameters:
hint A hint of the function this window will have.
void Gdk::Window::set_urgency_hint ( bool  urgent = true  ) 

Toggles whether a window needs the user's urgent attention.

Since gtkmm 2.8:
Parameters:
urgent true if the window is urgent.
void Gdk::Window::set_user_data ( gpointer  user_data  ) 

For most purposes this function is deprecated in favor of Glib::object_set_data().

However, for historical reasons GTK+ stores the Gtk::Widget that owns a Gdk::Window as user data on the Gdk::Window. So, custom widget implementations should use this function for that. If GTK+ receives an event for a Gdk::Window, and the user data for the window is non-0, GTK+ will assume the user data is a Gtk::Widget, and forward the event to that widget.

Parameters:
user_data User data.
void Gdk::Window::shape_combine_mask ( const Glib::RefPtr< Bitmap >&  mask,
int  x,
int  y 
)

Applies a shape mask to window.

Pixels in window corresponding to set bits in the mask will be visible; pixels in window corresponding to unset bits in the mask will be transparent. This gives a non-rectangular window.

If mask is 0, the shape mask will be unset, and the x/ y parameters are not used.

On the X11 platform, this uses an X server extension which is widely available on most common platforms, but not available on very old X servers, and occasionally the implementation will be buggy. On servers without the shape extension, this function will do nothing.

This function works on both toplevel and child windows.

Parameters:
mask Shape mask.
x X position of shape mask with respect to window.
y Y position of shape mask with respect to window.
void Gdk::Window::shape_combine_region ( const Region&  shape_region,
int  offset_x,
int  offset_y 
)

Makes pixels in window outside shape_region be transparent, so that the window may be nonrectangular.

See also gdk_window_shape_combine_mask() to use a bitmap as the mask.

If shape_region is 0, the shape will be unset, so the whole window will be opaque again. offset_x and offset_y are ignored if shape_region is 0.

On the X11 platform, this uses an X server extension which is widely available on most common platforms, but not available on very old X servers, and occasionally the implementation will be buggy. On servers without the shape extension, this function will do nothing.

This function works on both toplevel and child windows.

Parameters:
shape_region Region of window to be non-transparent.
offset_x X position of shape_region in window coordinates.
offset_y Y position of shape_region in window coordinates.
void Gdk::Window::show (  ) 

Like gdk_window_show_unraised(), but also raises the window to the top of the window stack (moves the window to the front of the Z-order).

This function maps a window so it's visible onscreen. Its opposite is gdk_window_hide().

When implementing a Gtk::Widget, you should call this function on the widget's Gdk::Window as part of the "map" method.

void Gdk::Window::show_unraised (  ) 

Shows a Gdk::Window onscreen, but does not modify its stacking order.

In contrast, gdk_window_show() will raise the window to the top of the window stack.

On the X11 platform, in Xlib terms, this function calls XMapWindow() (it also updates some internal GDK state, which means that you can't really use XMapWindow() directly on a GDK window).

void Gdk::Window::stick (  ) 

"Pins" a window such that it's on all workspaces and does not scroll with viewports, for window managers that have scrollable viewports.

(When using Gtk::Window, gtk_window_stick() may be more useful.)

On the X11 platform, this function depends on window manager support, so may have no effect with many window managers. However, GDK will do the best it can to convince the window manager to stick the window. For window managers that don't support this operation, there's nothing you can do to force it to happen.

void Gdk::Window::thaw_updates (  ) 

Thaws a window frozen with Gdk::Window::freeze_updates().

void Gdk::Window::unfullscreen (  ) 

Moves the window out of fullscreen mode.

If the window was not fullscreen, does nothing.

On X11, asks the window manager to move window out of the fullscreen state, if the window manager supports this operation. Not all window managers support this, and some deliberately ignore it or don't have a concept of "fullscreen"; so you can't rely on the unfullscreenification actually happening. But it will happen with most standard window managers, and GDK makes a best effort to get it to happen.

Since gtkmm 2.2:
void Gdk::Window::unmaximize (  ) 

Unmaximizes the window.

If the window wasn't maximized, then this function does nothing.

On X11, asks the window manager to unmaximize window, if the window manager supports this operation. Not all window managers support this, and some deliberately ignore it or don't have a concept of "maximized"; so you can't rely on the unmaximization actually happening. But it will happen with most standard window managers, and GDK makes a best effort to get it to happen.

On Windows, reliably unmaximizes the window.

void Gdk::Window::unset_back_pixmap (  ) 

Unsets the background pixmap of window so that the window will have no background.

A window with no background will never have its background filled by the windowing system, instead the window will contain whatever pixels were already in the corresponding area of the display.

See also:
set_back_pixmap().
Since gtkmm 2.14:
void Gdk::Window::unset_icon (  ) 
void Gdk::Window::unset_shape_combine_mask (  ) 
static void Gdk::Window::unset_sm_client_id (  )  [static]
void Gdk::Window::unstick (  ) 

Reverse operation for gdk_window_stick(); see gdk_window_stick(), and gtk_window_unstick().

void Gdk::Window::withdraw (  ) 

Withdraws a window (unmaps it and asks the window manager to forget about it).

This function is not really useful as gdk_window_hide() automatically withdraws toplevel windows before hiding them.

Friends And Related Function Documentation

Glib::RefPtr< Gdk::Window > wrap ( GdkWindowObject *  object,
bool  take_copy = false 
) [related]

A Glib::wrap() method for this object.

Parameters:
object The C instance.
take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
Returns:
A C++ instance that wraps this C instance.
The documentation for this class was generated from the following file:
Generated on Tue May 4 13:21:45 2010 for gtkmm by  doxygen 1.6.1