GDK_ROOT_WINDOW

#define GDK_ROOT_WINDOW()             (gdk_x11_get_default_root_xwindow ())

Obtains the Xlib window id of the root window of the current screen.

GDK_ROOT_PARENT

#define GDK_ROOT_PARENT()             (gdk_get_default_root_window ())

Obtains the Xlib window id of the root window of the default screen.

GDK_DISPLAY

#define GDK_DISPLAY()                 gdk_display

The current display.

GDK_WINDOW_XDISPLAY()

#define GDK_WINDOW_XDISPLAY(win)      (GDK_SCREEN_X11 (GDK_WINDOW_SCREEN (win))->xdisplay)

Returns the display of a GdkWindow.

GDK_WINDOW_XID()

#define GDK_WINDOW_XID(win)           (GDK_DRAWABLE_IMPL_X11(((GdkWindowObject *)win)->impl)->xid)

Returns the X window belonging to a GdkWindow.

GDK_PIXMAP_XDISPLAY()

#define GDK_PIXMAP_XDISPLAY(pix)      (GDK_SCREEN_X11 (GDK_PIXMAP_SCREEN (pix))->xdisplay)

Returns the display of a GdkPixmap.

GDK_PIXMAP_XID()

#define GDK_PIXMAP_XID(pix)           (GDK_DRAWABLE_IMPL_X11(((GdkPixmapObject *)pix)->impl)->xid)

Returns the X pixmap belonging to a GdkPixmap.

GDK_DISPLAY_XDISPLAY()

#define GDK_DISPLAY_XDISPLAY(display) (GDK_DISPLAY_X11(display)->xdisplay)

Returns the display of a GdkDisplay.

GDK_DRAWABLE_XDISPLAY()

#define GDK_DRAWABLE_XDISPLAY(win)    (GDK_IS_WINDOW (win) ? GDK_WINDOW_XDISPLAY (win) : GDK_PIXMAP_XDISPLAY (win))

Returns the display of a GdkDrawable.

GDK_DRAWABLE_XID()

#define GDK_DRAWABLE_XID(win)         (GDK_IS_WINDOW (win) ? GDK_WINDOW_XID (win) : GDK_PIXMAP_XID (win))

Returns the X resource (window or pixmap) belonging to a GdkDrawable.

GDK_IMAGE_XDISPLAY()

#define GDK_IMAGE_XDISPLAY(image)     (gdk_x11_image_get_xdisplay (image))

Returns the display of a GdkImage.

GDK_IMAGE_XIMAGE()

#define GDK_IMAGE_XIMAGE(image)       (gdk_x11_image_get_ximage (image))

Returns the X image belonging to a GdkImage.

GDK_GC_XDISPLAY()

#define GDK_GC_XDISPLAY(gc)           (GDK_SCREEN_XDISPLAY(GDK_GC_X11(gc)->screen))

Returns the display of a GdkGC.

GDK_COLORMAP_XDISPLAY()

#define GDK_COLORMAP_XDISPLAY(cmap)   (gdk_x11_colormap_get_xdisplay (cmap))

Returns the display of a GdkColormap.

GDK_COLORMAP_XCOLORMAP()

#define GDK_COLORMAP_XCOLORMAP(cmap)  (gdk_x11_colormap_get_xcolormap (cmap))

Returns the X colormap belonging to a GdkColormap.

GDK_SCREEN_XDISPLAY()

#define GDK_SCREEN_XDISPLAY(screen)   (GDK_SCREEN_X11 (screen)->xdisplay)

Returns the display of a GdkScreen.

GDK_SCREEN_XNUMBER()

#define GDK_SCREEN_XNUMBER(screen)    (GDK_SCREEN_X11 (screen)->screen_num) 

Returns the index of a GdkScreen.

GDK_SCREEN_XSCREEN()

#define GDK_SCREEN_XSCREEN(screen)    (GDK_SCREEN_X11 (screen)->xscreen)

Returns the screen of a GdkScreen.

GDK_VISUAL_XVISUAL()

#define GDK_VISUAL_XVISUAL(vis)       (((GdkVisualPrivate *) vis)->xvisual)

Returns the X visual belonging to a GdkVisual.

GDK_FONT_XDISPLAY()

#define GDK_FONT_XDISPLAY(font)       (gdk_x11_font_get_xdisplay (font))

Returns the display of a GdkFont.

GDK_FONT_XFONT()

#define GDK_FONT_XFONT(font)          (gdk_x11_font_get_xfont (font))

Returns the X font belonging to a GdkFont.

GDK_CURSOR_XCURSOR()

#define GDK_CURSOR_XCURSOR(cursor)    (gdk_x11_cursor_get_xcursor (cursor))

Returns the X cursor belonging to a GdkCursor.

GDK_CURSOR_XDISPLAY()

#define GDK_CURSOR_XDISPLAY(cursor)   (gdk_x11_cursor_get_xdisplay (cursor))

Returns the display of a GdkCursor.

GDK_GC_XGC()

#define GDK_GC_XGC(gc)		      (GDK_GC_X11(gc)->xgc)

Returns the X GC of a GdkGC.

GDK_GC_GET_XGC()

#define GDK_GC_GET_XGC(gc)	      (GDK_GC_X11(gc)->dirty_mask ? _gdk_x11_gc_flush (gc) : ((GdkGCX11 *)(gc))->xgc)

Returns the X GC of a GdkGC.

gdkx_visual_get ()

GdkVisual *
gdkx_visual_get (VisualID xvisualid);

Returns a GdkVisual corresponding to a X visual.

gdkx_colormap_get ()

GdkColormap *
gdkx_colormap_get (Colormap xcolormap);

Returns a GdkColormap corresponding to a X colormap; this function only works if the colormap is already known to GTK+ (a colormap created by GTK+ or the default colormap for the screen), since GTK+

Always use gdk_x11_colormap_foreign_new() instead.

gdk_pixmap_foreign_new ()

GdkPixmap *
gdk_pixmap_foreign_new (GdkNativeWindow anid);

Wraps a native window for the default display in a GdkPixmap. This may fail if the pixmap has been destroyed.

For example in the X backend, a native pixmap handle is an Xlib

gdk_pixmap_foreign_new_for_display ()

GdkPixmap *
gdk_pixmap_foreign_new_for_display (GdkDisplay *display,
                                    GdkNativeWindow anid);

Wraps a native pixmap in a GdkPixmap. This may fail if the pixmap has been destroyed.

For example in the X backend, a native pixmap handle is an Xlib

Since 2.2

gdk_pixmap_foreign_new_for_screen ()

GdkPixmap *
gdk_pixmap_foreign_new_for_screen (GdkScreen *screen,
                                   GdkNativeWindow anid,
                                   gint width,
                                   gint height,
                                   gint depth);

Wraps a native pixmap in a GdkPixmap. This may fail if the pixmap has been destroyed.

For example in the X backend, a native pixmap handle is an Xlib

This function is an alternative to gdk_pixmap_foreign_new_for_display() for cases where the dimensions of the pixmap are known. For the X backend, this avoids a roundtrip to the server.

Since 2.10

gdk_window_foreign_new ()

GdkWindow *
gdk_window_foreign_new (GdkNativeWindow anid);

Wraps a native window for the default display in a GdkWindow. This may fail if the window has been destroyed.

For example in the X backend, a native window handle is an Xlib

gdk_window_foreign_new_for_display ()

GdkWindow *
gdk_window_foreign_new_for_display (GdkDisplay *display,
                                    GdkNativeWindow anid);

Wraps a native window in a GdkWindow. This may fail if the window has been destroyed. If the window was already known to GDK, a new reference to the existing GdkWindow is returned.

For example in the X backend, a native window handle is an Xlib

Since 2.2

gdk_xid_table_lookup ()

gpointer
gdk_xid_table_lookup (XID xid);

Returns the Gdk object associated with the given X id for the default display.

gdk_xid_table_lookup_for_display ()

gpointer
gdk_xid_table_lookup_for_display (GdkDisplay *display,
                                  XID xid);

Returns the GDK object associated with the given X id.

Since 2.2

gdk_window_lookup ()

GdkWindow *
gdk_window_lookup (GdkNativeWindow anid);

Looks up the GdkWindow that wraps the given native window handle.

For example in the X backend, a native window handle is an Xlib

gdk_window_lookup_for_display ()

GdkWindow *
gdk_window_lookup_for_display (GdkDisplay *display,
                               GdkNativeWindow anid);

Looks up the GdkWindow that wraps the given native window handle.

For example in the X backend, a native window handle is an Xlib

Since 2.2

gdk_pixmap_lookup ()

GdkPixmap *
gdk_pixmap_lookup (GdkNativeWindow anid);

Looks up the GdkPixmap that wraps the given native pixmap handle.

For example in the X backend, a native pixmap handle is an Xlib

gdk_pixmap_lookup_for_display ()

GdkPixmap *
gdk_pixmap_lookup_for_display (GdkDisplay *display,
                               GdkNativeWindow anid);

Looks up the GdkPixmap that wraps the given native pixmap handle.

For example in the X backend, a native pixmap handle is an Xlib

Since 2.2

gdk_font_lookup()

#define gdk_font_lookup(xid)	   ((GdkFont*) gdk_xid_table_lookup (xid))

Obtains the GdkFont for the given Xlib font ID, or NULL if no GdkFont has been created for xid.

gdk_font_lookup_for_display()

#define gdk_font_lookup_for_display(display, xid) ((GdkFont*) gdk_xid_table_lookup_for_display (display, ((xid)|XID_FONT_BIT)))

Obtains the GdkFont for the given Xlib font ID on display, or NULL if no GdkFont has been created for xid.

gdk_x11_lookup_xdisplay ()

GdkDisplay *
gdk_x11_lookup_xdisplay (Display *xdisplay);

Find the GdkDisplay corresponding to display , if any exists.

Since 2.2

gdk_x11_get_server_time ()

guint32
gdk_x11_get_server_time (GdkWindow *window);

Routine to get the current X server time stamp.

gdk_net_wm_supports ()

gboolean
gdk_net_wm_supports (GdkAtom property);

This function is specific to the X11 backend of GDK, and indicates whether the window manager for the default screen supports a certain hint from the Extended Window Manager Hints Specification. See gdk_x11_screen_supports_net_wm_hint() for complete details.

gdk_x11_screen_supports_net_wm_hint ()

gboolean
gdk_x11_screen_supports_net_wm_hint (GdkScreen *screen,
                                     GdkAtom property);

This function is specific to the X11 backend of GDK, and indicates whether the window manager supports a certain hint from the Extended Window Manager Hints Specification. You can find this specification on

When using this function, keep in mind that the window manager can change over time; so you shouldn't use this function in a way that impacts persistent application state. A common bug is that your application can start up before the window manager does when the user logs in, and before the window manager starts gdk_x11_screen_supports_net_wm_hint() will return FALSE for every property. You can monitor the window_manager_changed signal on GdkScreen to detect a window manager change.

Since 2.2

gdk_x11_screen_get_window_manager_name ()

const char *
gdk_x11_screen_get_window_manager_name
                               (GdkScreen *screen);

Returns the name of the window manager for screen .

Since 2.2

gdk_x11_screen_get_monitor_output ()

XID
gdk_x11_screen_get_monitor_output (GdkScreen *screen,
                                   gint monitor_num);

Gets the XID of the specified output/monitor. If the X server does not support version 1.2 of the RANDR extension, 0 is returned.

Since 2.14

gdk_x11_screen_lookup_visual ()

GdkVisual *
gdk_x11_screen_lookup_visual (GdkScreen *screen,
                              VisualID xvisualid);

Looks up the GdkVisual for a particular screen and X Visual ID.

Since 2.2

gdk_x11_window_set_user_time ()

void
gdk_x11_window_set_user_time (GdkWindow *window,
                              guint32 timestamp);

The application can use this call to update the _NET_WM_USER_TIME property on a toplevel window. This property stores an Xserver time which represents the time of the last user input event received for this window. This property may be used by the window manager to alter the focus, stacking, and/or placement behavior of windows when they are mapped depending on whether the new window was created by a user action or is a "pop-up" window activated by a timer or some other event.

Note that this property is automatically updated by GDK, so this function should only be used by applications which handle input events bypassing GDK.

Since 2.6

gdk_x11_window_move_to_current_desktop ()

void
gdk_x11_window_move_to_current_desktop
                               (GdkWindow *window);

Moves the window to the correct workspace when running under a window manager that supports multiple workspaces, as described in the Extended Window Manager Hints. Will not do anything if the window is already on all workspaces.

Since 2.8

gdk_x11_display_get_user_time ()

guint32
gdk_x11_display_get_user_time (GdkDisplay *display);

Returns the timestamp of the last user interaction on display . The timestamp is taken from events caused by user interaction such as key presses or pointer movements. See gdk_x11_window_set_user_time().

Since 2.8

gdk_x11_colormap_foreign_new ()

GdkColormap *
gdk_x11_colormap_foreign_new (GdkVisual *visual,
                              Colormap xcolormap);

If xcolormap refers to a colormap previously known to GTK+, returns a new reference to the existing GdkColormap object, otherwise creates a new GdkColormap object and returns that

Since 2.2

gdk_x11_colormap_get_xcolormap ()

Colormap
gdk_x11_colormap_get_xcolormap (GdkColormap *colormap);

Returns the X colormap belonging to a GdkColormap.

gdk_x11_colormap_get_xdisplay ()

Display *
gdk_x11_colormap_get_xdisplay (GdkColormap *colormap);

Returns the display of a GdkColormap.

gdk_x11_cursor_get_xcursor ()

Cursor
gdk_x11_cursor_get_xcursor (GdkCursor *cursor);

Returns the X cursor belonging to a GdkCursor.

gdk_x11_cursor_get_xdisplay ()

Display *
gdk_x11_cursor_get_xdisplay (GdkCursor *cursor);

Returns the display of a GdkCursor.

gdk_x11_display_broadcast_startup_message ()

void
gdk_x11_display_broadcast_startup_message
                               (GdkDisplay *display,
                                const char *message_type,
                                ...);

Sends a startup notification message of type message_type to display .

This is a convenience function for use by code that implements the freedesktop startup notification specification. Applications should not normally need to call it directly. See the Startup Notification Protocol specification for definitions of the message types and keys that can be used.

Since 2.12

gdk_x11_display_get_startup_notification_id ()

const gchar *
gdk_x11_display_get_startup_notification_id
                               (GdkDisplay *display);

Gets the startup notification ID for a display.

Since 2.12

gdk_x11_display_get_xdisplay ()

Display *
gdk_x11_display_get_xdisplay (GdkDisplay *display);

Returns the X display of a GdkDisplay.

Since 2.2

gdk_x11_display_grab ()

void
gdk_x11_display_grab (GdkDisplay *display);

Call XGrabServer() on display . To ungrab the display again, use gdk_x11_display_ungrab().

gdk_x11_display_grab()/gdk_x11_display_ungrab() calls can be nested.

Since 2.2

gdk_x11_display_ungrab ()

void
gdk_x11_display_ungrab (GdkDisplay *display);

Ungrab display after it has been grabbed with gdk_x11_display_grab().

Since 2.2

gdk_x11_display_set_cursor_theme ()

void
gdk_x11_display_set_cursor_theme (GdkDisplay *display,
                                  const gchar *theme,
                                  const gint size);

Sets the cursor theme from which the images for cursor should be taken.

If the windowing system supports it, existing cursors created with gdk_cursor_new(), gdk_cursor_new_for_display() and gdk_cursor_new_for_name() are updated to reflect the theme change. Custom cursors constructed with gdk_cursor_new_from_pixmap() or gdk_cursor_new_from_pixbuf() will have to be handled by the application (GTK+ applications can learn about cursor theme changes by listening for change notification for the corresponding GtkSetting).

Since 2.8

gdk_x11_register_standard_event_type ()

void
gdk_x11_register_standard_event_type (GdkDisplay *display,
                                      gint event_base,
                                      gint n_events);

Registers interest in receiving extension events with type codes between event_base and event_base + n_events - 1. The registered events must have the window field in the same place as core X events (this is not the case for e.g. XKB extension events).

If an event type is registered, events of this type will go through global and window-specific filters (see gdk_window_add_filter()). Unregistered events will only go through global filters. GDK may register the events of some X extensions on its own.

This function should only be needed in unusual circumstances, e.g. when filtering XInput extension events on the root window.

Since 2.4

gdk_x11_drawable_get_xdisplay ()

Display *
gdk_x11_drawable_get_xdisplay (GdkDrawable *drawable);

Returns the display of a GdkDrawable.

gdk_x11_drawable_get_xid ()

XID
gdk_x11_drawable_get_xid (GdkDrawable *drawable);

Returns the X resource (window or pixmap) belonging to a GdkDrawable.

gdk_x11_font_get_name ()

const char *
gdk_x11_font_get_name (GdkFont *font);

Return the X Logical Font Description (for font->type == GDK_FONT_FONT) or comma separated list of XLFDs (for font->type == GDK_FONT_FONTSET) that was used to load the font. If the same font was loaded via multiple names, which name is returned is undefined.

gdk_x11_font_get_xdisplay ()

Display *
gdk_x11_font_get_xdisplay (GdkFont *font);

Returns the display of a GdkFont.

gdk_x11_font_get_xfont ()

gpointer
gdk_x11_font_get_xfont (GdkFont *font);

Returns the X font belonging to a GdkFont.

gdk_x11_gc_get_xdisplay ()

Display *
gdk_x11_gc_get_xdisplay (GdkGC *gc);

Returns the display of a GdkGC.

gdk_x11_gc_get_xgc ()

GC
gdk_x11_gc_get_xgc (GdkGC *gc);

Returns the X GC of a GdkGC.

gdk_x11_get_default_root_xwindow ()

Window
gdk_x11_get_default_root_xwindow (void);

Gets the root window of the default screen (see gdk_x11_get_default_screen()).

gdk_x11_get_default_screen ()

gint
gdk_x11_get_default_screen (void);

Gets the default GTK+ screen number.

gdk_x11_get_default_xdisplay ()

Display *
gdk_x11_get_default_xdisplay (void);

Gets the default GTK+ display.

gdk_x11_grab_server ()

void
gdk_x11_grab_server (void);

Call gdk_x11_display_grab() on the default display. To ungrab the server again, use gdk_x11_ungrab_server().

gdk_x11_grab_server()/gdk_x11_ungrab_server() calls can be nested.

gdk_x11_image_get_xdisplay ()

Display *
gdk_x11_image_get_xdisplay (GdkImage *image);

Returns the display of a GdkImage.

gdk_x11_image_get_ximage ()

XImage *
gdk_x11_image_get_ximage (GdkImage *image);

Returns the X image belonging to a GdkImage.

gdk_x11_screen_get_screen_number ()

int
gdk_x11_screen_get_screen_number (GdkScreen *screen);

Returns the index of a GdkScreen.

Since 2.2

gdk_x11_screen_get_xscreen ()

Screen *
gdk_x11_screen_get_xscreen (GdkScreen *screen);

Returns the screen of a GdkScreen.

Since 2.2

gdk_x11_ungrab_server ()

void
gdk_x11_ungrab_server (void);

Ungrab the default display after it has been grabbed with gdk_x11_grab_server().

gdk_x11_visual_get_xvisual ()

Visual *
gdk_x11_visual_get_xvisual (GdkVisual *visual);

Returns the X visual belonging to a GdkVisual.

gdk_x11_atom_to_xatom ()

Atom
gdk_x11_atom_to_xatom (GdkAtom atom);

Converts from a GdkAtom to the X atom for the default GDK display with the same string value.

gdk_x11_atom_to_xatom_for_display ()

Atom
gdk_x11_atom_to_xatom_for_display (GdkDisplay *display,
                                   GdkAtom atom);

Converts from a GdkAtom to the X atom for a GdkDisplay with the same string value. The special value GDK_NONE is converted to None.

Since 2.2

gdk_x11_xatom_to_atom ()

GdkAtom
gdk_x11_xatom_to_atom (Atom xatom);

Convert from an X atom for the default display to the corresponding GdkAtom.

gdk_x11_xatom_to_atom_for_display ()

GdkAtom
gdk_x11_xatom_to_atom_for_display (GdkDisplay *display,
                                   Atom xatom);

Convert from an X atom for a GdkDisplay to the corresponding GdkAtom.

Since 2.2

gdk_x11_get_xatom_by_name ()

Atom
gdk_x11_get_xatom_by_name (const gchar *atom_name);

Returns the X atom for GDK's default display corresponding to atom_name . This function caches the result, so if called repeatedly it is much faster than XInternAtom(), which is a round trip to the server each time.

gdk_x11_get_xatom_by_name_for_display ()

Atom
gdk_x11_get_xatom_by_name_for_display (GdkDisplay *display,
                                       const gchar *atom_name);

Returns the X atom for a GdkDisplay corresponding to atom_name . This function caches the result, so if called repeatedly it is much faster than XInternAtom(), which is a round trip to the server each time.

Since 2.2

gdk_x11_get_xatom_name ()

const gchar *
gdk_x11_get_xatom_name (Atom xatom);

Returns the name of an X atom for GDK's default display. This function is meant mainly for debugging, so for convenience, unlike XAtomName() and gdk_atom_name(), the result doesn't need to be freed. Also, this function will never return NULL, even if xatom is invalid.

gdk_x11_get_xatom_name_for_display ()

const gchar *
gdk_x11_get_xatom_name_for_display (GdkDisplay *display,
                                    Atom xatom);

Returns the name of an X atom for its display. This function is meant mainly for debugging, so for convenience, unlike XAtomName() and gdk_atom_name(), the result doesn't need to be freed.

Since 2.2

gdk_x11_set_sm_client_id ()

void
gdk_x11_set_sm_client_id (const gchar *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.

See the X Session Management Library documentation for more information on session management and the Inter-Client Communication Conventions Manual

Since 2.24

gdk_x11_window_foreign_new_for_display ()

GdkWindow *
gdk_x11_window_foreign_new_for_display
                               (GdkDisplay *display,
                                Window window);

Wraps a native window in a GdkWindow.

This may fail if the window has been destroyed. If the window was already known to GDK, a new reference to the existing GdkWindow is returned.

Since 2.24

gdk_x11_window_lookup_for_display ()

GdkWindow *
gdk_x11_window_lookup_for_display (GdkDisplay *display,
                                   Window window);

Looks up the GdkWindow that wraps the given native window handle.

Since 2.24

GDK_WINDOW_XWINDOW

#define GDK_WINDOW_XWINDOW	      GDK_DRAWABLE_XID

Another name for GDK_DRAWABLE_XID().