1 /* GDK - The GIMP Drawing Kit
4 * Copyright 2001 Sun Microsystems Inc.
6 * Erwann Chenede <erwann.chenede@sun.com>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
32 #include "gdkdisplay.h"
33 #include "gdkdisplay-x11.h"
34 #include "gdkscreen.h"
35 #include "gdkscreen-x11.h"
36 #include "gdkinternals.h"
37 #include "gdkinputprivate.h"
38 #include "xsettings-client.h"
40 #include <X11/Xatom.h>
43 #include <X11/XKBlib.h>
47 #include <X11/extensions/Xfixes.h>
50 static void gdk_display_x11_class_init (GdkDisplayX11Class *class);
51 static void gdk_display_x11_dispose (GObject *object);
52 static void gdk_display_x11_finalize (GObject *object);
55 static void gdk_internal_connection_watch (Display *display,
59 XPointer *watch_data);
60 #endif /* HAVE_X11R6 */
62 static gpointer parent_class = NULL;
64 /* Note that we never *directly* use WM_LOCALE_NAME, WM_PROTOCOLS,
65 * but including them here has the side-effect of getting them
66 * into the internal Xlib cache
68 static const char *const precache_atoms[] = {
82 "_NET_WM_STATE_STICKY",
83 "_NET_WM_STATE_MAXIMIZED_VERT",
84 "_NET_WM_STATE_MAXIMIZED_HORZ",
85 "_NET_WM_STATE_FULLSCREEN",
86 "_NET_WM_SYNC_REQUEST",
87 "_NET_WM_SYNC_REQUEST_COUNTER",
88 "_NET_WM_WINDOW_TYPE",
89 "_NET_WM_WINDOW_TYPE_NORMAL",
94 _gdk_display_x11_get_type (void)
96 static GType object_type = 0;
100 static const GTypeInfo object_info =
102 sizeof (GdkDisplayX11Class),
103 (GBaseInitFunc) NULL,
104 (GBaseFinalizeFunc) NULL,
105 (GClassInitFunc) gdk_display_x11_class_init,
106 NULL, /* class_finalize */
107 NULL, /* class_data */
108 sizeof (GdkDisplayX11),
110 (GInstanceInitFunc) NULL,
113 object_type = g_type_register_static (GDK_TYPE_DISPLAY,
122 gdk_display_x11_class_init (GdkDisplayX11Class * class)
124 GObjectClass *object_class = G_OBJECT_CLASS (class);
126 object_class->dispose = gdk_display_x11_dispose;
127 object_class->finalize = gdk_display_x11_finalize;
129 parent_class = g_type_class_peek_parent (class);
134 * @display_name: the name of the display to open
135 * @returns: a #GdkDisplay, or %NULL if the display
136 * could not be opened.
143 gdk_display_open (const gchar *display_name)
147 GdkDisplayX11 *display_x11;
151 const char *sm_client_id;
153 XClassHint *class_hint;
160 xdisplay = XOpenDisplay (display_name);
164 display = g_object_new (GDK_TYPE_DISPLAY_X11, NULL);
165 display_x11 = GDK_DISPLAY_X11 (display);
167 display_x11->use_xshm = TRUE;
168 display_x11->xdisplay = xdisplay;
171 /* Set up handlers for Xlib internal connections */
172 XAddConnectionWatch (xdisplay, gdk_internal_connection_watch, NULL);
173 #endif /* HAVE_X11R6 */
175 /* initialize the display's screens */
176 display_x11->screens = g_new (GdkScreen *, ScreenCount (display_x11->xdisplay));
177 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
178 display_x11->screens[i] = _gdk_x11_screen_new (display, i);
180 /* We need to initialize events after we have the screen
181 * structures in places
183 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
184 _gdk_x11_events_init_screen (display_x11->screens[i]);
186 /*set the default screen */
187 display_x11->default_screen = display_x11->screens[DefaultScreen (display_x11->xdisplay)];
189 attr.window_type = GDK_WINDOW_TOPLEVEL;
190 attr.wclass = GDK_INPUT_OUTPUT;
197 display_x11->leader_gdk_window = gdk_window_new (GDK_SCREEN_X11 (display_x11->default_screen)->root_window,
198 &attr, GDK_WA_X | GDK_WA_Y);
199 display_x11->leader_window = GDK_WINDOW_XID (display_x11->leader_gdk_window);
201 display_x11->leader_window_title_set = FALSE;
203 display_x11->have_render = GDK_UNKNOWN;
206 if (XFixesQueryExtension (display_x11->xdisplay,
207 &display_x11->xfixes_event_base,
210 display_x11->have_xfixes = TRUE;
212 gdk_x11_register_standard_event_type (display,
213 display_x11->xfixes_event_base,
218 display_x11->have_xfixes = FALSE;
220 if (_gdk_synchronize)
221 XSynchronize (display_x11->xdisplay, True);
223 _gdk_x11_precache_atoms (display, precache_atoms, G_N_ELEMENTS (precache_atoms));
225 class_hint = XAllocClassHint();
226 class_hint->res_name = g_get_prgname ();
228 class_hint->res_class = (char *)gdk_get_program_class ();
229 _gdk_get_command_line_args (&argc, &argv);
230 XmbSetWMProperties (display_x11->xdisplay,
231 display_x11->leader_window,
232 NULL, NULL, argv, argc, NULL, NULL,
236 sm_client_id = _gdk_get_sm_client_id ();
238 _gdk_windowing_display_set_sm_client_id (display, sm_client_id);
241 XChangeProperty (display_x11->xdisplay,
242 display_x11->leader_window,
243 gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PID"),
244 XA_CARDINAL, 32, PropModeReplace, (guchar *) & pid, 1);
246 /* We don't yet know a valid time. */
247 display_x11->user_time = 0;
251 gint xkb_major = XkbMajorVersion;
252 gint xkb_minor = XkbMinorVersion;
253 if (XkbLibraryVersion (&xkb_major, &xkb_minor))
255 xkb_major = XkbMajorVersion;
256 xkb_minor = XkbMinorVersion;
258 if (XkbQueryExtension (display_x11->xdisplay,
259 NULL, &display_x11->xkb_event_type, NULL,
260 &xkb_major, &xkb_minor))
262 Bool detectable_autorepeat_supported;
264 display_x11->use_xkb = TRUE;
266 XkbSelectEvents (display_x11->xdisplay,
268 XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask,
269 XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask);
271 XkbSetDetectableAutoRepeat (display_x11->xdisplay,
273 &detectable_autorepeat_supported);
275 GDK_NOTE (MISC, g_message ("Detectable autorepeat %s.",
276 detectable_autorepeat_supported ?
277 "supported" : "not supported"));
279 display_x11->have_xkb_autorepeat = detectable_autorepeat_supported;
285 display_x11->use_sync = FALSE;
289 int error_base, event_base;
291 if (XSyncQueryExtension (display_x11->xdisplay,
292 &event_base, &error_base) &&
293 XSyncInitialize (display_x11->xdisplay,
295 display_x11->use_sync = TRUE;
299 _gdk_windowing_image_init (display);
300 _gdk_events_init (display);
301 _gdk_input_init (display);
302 _gdk_dnd_init (display);
304 g_signal_emit_by_name (gdk_display_manager_get(),
305 "display_opened", display);
312 * XLib internal connection handling
314 typedef struct _GdkInternalConnection GdkInternalConnection;
316 struct _GdkInternalConnection
324 process_internal_connection (GIOChannel *gioc,
328 GdkInternalConnection *connection = (GdkInternalConnection *)data;
330 GDK_THREADS_ENTER ();
332 XProcessInternalConnection ((Display*)connection->display, connection->fd);
334 GDK_THREADS_LEAVE ();
339 static GdkInternalConnection *
340 gdk_add_connection_handler (Display *display,
343 GIOChannel *io_channel;
344 GdkInternalConnection *connection;
346 connection = g_new (GdkInternalConnection, 1);
349 connection->display = display;
351 io_channel = g_io_channel_unix_new (fd);
353 connection->source = g_io_create_watch (io_channel, G_IO_IN);
354 g_source_set_callback (connection->source,
355 (GSourceFunc)process_internal_connection, connection, NULL);
356 g_source_attach (connection->source, NULL);
358 g_io_channel_unref (io_channel);
364 gdk_remove_connection_handler (GdkInternalConnection *connection)
366 g_source_destroy (connection->source);
371 gdk_internal_connection_watch (Display *display,
375 XPointer *watch_data)
378 *watch_data = (XPointer)gdk_add_connection_handler (display, fd);
380 gdk_remove_connection_handler ((GdkInternalConnection *)*watch_data);
382 #endif /* HAVE_X11R6 */
385 * gdk_display_get_name:
386 * @display: a #GdkDisplay
388 * Gets the name of the display.
390 * Returns: a string representing the display name. This string is owned
391 * by GDK and should not be modified or freed.
395 G_CONST_RETURN gchar *
396 gdk_display_get_name (GdkDisplay * display)
398 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
400 return (gchar *) DisplayString (GDK_DISPLAY_X11 (display)->xdisplay);
404 * gdk_display_get_n_screens:
405 * @display: a #GdkDisplay
407 * Gets the number of screen managed by the @display.
409 * Returns: number of screens.
414 gdk_display_get_n_screens (GdkDisplay * display)
416 g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
418 return ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay);
422 * gdk_display_get_screen:
423 * @display: a #GdkDisplay
424 * @screen_num: the screen number
426 * Returns a screen object for one of the screens of the display.
428 * Returns: the #GdkScreen object
433 gdk_display_get_screen (GdkDisplay * display, gint screen_num)
435 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
436 g_return_val_if_fail (ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay) > screen_num, NULL);
438 return GDK_DISPLAY_X11 (display)->screens[screen_num];
442 * gdk_display_get_default_screen:
443 * @display: a #GdkDisplay
445 * Get the default #GdkScreen for @display.
447 * Returns: the default #GdkScreen object for @display
452 gdk_display_get_default_screen (GdkDisplay * display)
454 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
456 return GDK_DISPLAY_X11 (display)->default_screen;
460 _gdk_x11_display_is_root_window (GdkDisplay *display,
463 GdkDisplayX11 *display_x11;
466 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
468 display_x11 = GDK_DISPLAY_X11 (display);
470 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
472 if (GDK_SCREEN_XROOTWIN (display_x11->screens[i]) == xroot_window)
479 * gdk_display_pointer_ungrab:
480 * @display: a #GdkDisplay.
481 * @time_: a timestap (e.g. GDK_CURRENT_TIME).
483 * Release any pointer grab.
488 gdk_display_pointer_ungrab (GdkDisplay *display,
493 g_return_if_fail (GDK_IS_DISPLAY (display));
495 xdisplay = GDK_DISPLAY_XDISPLAY (display);
497 _gdk_input_ungrab_pointer (display, time);
498 XUngrabPointer (xdisplay, time);
501 GDK_DISPLAY_X11 (display)->pointer_xgrab_window = NULL;
505 * gdk_display_pointer_is_grabbed:
506 * @display: a #GdkDisplay
508 * Test if the pointer is grabbed.
510 * Returns: %TRUE if an active X pointer grab is in effect
515 gdk_display_pointer_is_grabbed (GdkDisplay * display)
517 g_return_val_if_fail (GDK_IS_DISPLAY (display), TRUE);
519 return (GDK_DISPLAY_X11 (display)->pointer_xgrab_window != NULL);
523 * gdk_display_keyboard_ungrab:
524 * @display: a #GdkDisplay.
525 * @time_: a timestap (e.g #GDK_CURRENT_TIME).
527 * Release any keyboard grab
532 gdk_display_keyboard_ungrab (GdkDisplay *display,
537 g_return_if_fail (GDK_IS_DISPLAY (display));
539 xdisplay = GDK_DISPLAY_XDISPLAY (display);
541 XUngrabKeyboard (xdisplay, time);
544 GDK_DISPLAY_X11 (display)->keyboard_xgrab_window = NULL;
549 * @display: a #GdkDisplay
551 * Emits a short beep on @display
556 gdk_display_beep (GdkDisplay * display)
558 g_return_if_fail (GDK_IS_DISPLAY (display));
560 XBell (GDK_DISPLAY_XDISPLAY (display), 0);
565 * @display: a #GdkDisplay
567 * Flushes any requests queued for the windowing system and waits until all
568 * requests have been handled. This is often used for making sure that the
569 * display is synchronized with the current state of the program. Calling
570 * gdk_display_sync() before gdk_error_trap_pop() makes sure that any errors
571 * generated from earlier requests are handled before the error trap is
574 * This is most useful for X11. On windowing systems where requests are
575 * handled synchronously, this function will do nothing.
580 gdk_display_sync (GdkDisplay * display)
582 g_return_if_fail (GDK_IS_DISPLAY (display));
584 XSync (GDK_DISPLAY_XDISPLAY (display), False);
589 * @display: a #GdkDisplay
591 * Flushes any requests queued for the windowing system; this happens automatically
592 * when the main loop blocks waiting for new events, but if your application
593 * is drawing without returning control to the main loop, you may need
594 * to call this function explicitely. A common case where this function
595 * needs to be called is when an application is executing drawing commands
596 * from a thread other than the thread where the main loop is running.
598 * This is most useful for X11. On windowing systems where requests are
599 * handled synchronously, this function will do nothing.
604 gdk_display_flush (GdkDisplay *display)
606 g_return_if_fail (GDK_IS_DISPLAY (display));
608 if (!display->closed)
609 XFlush (GDK_DISPLAY_XDISPLAY (display));
613 * gdk_display_get_default_group:
614 * @display: a #GdkDisplay
616 * Returns the default group leader window for all toplevel windows
617 * on @display. This window is implicitly created by GDK.
618 * See gdk_window_set_group().
620 * Return value: The default group leader window for @display
624 GdkWindow *gdk_display_get_default_group (GdkDisplay *display)
626 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
628 return GDK_DISPLAY_X11 (display)->leader_gdk_window;
632 * gdk_x11_display_grab:
633 * @display: a #GdkDisplay
635 * Call XGrabServer() on @display.
636 * To ungrab the display again, use gdk_x11_display_ungrab().
638 * gdk_x11_display_grab()/gdk_x11_display_ungrab() calls can be nested.
643 gdk_x11_display_grab (GdkDisplay * display)
645 GdkDisplayX11 *display_x11;
647 g_return_if_fail (GDK_IS_DISPLAY (display));
649 display_x11 = GDK_DISPLAY_X11 (display);
651 if (display_x11->grab_count == 0)
652 XGrabServer (display_x11->xdisplay);
653 display_x11->grab_count++;
657 * gdk_x11_display_ungrab:
658 * @display: a #GdkDisplay
660 * Ungrab @display after it has been grabbed with
661 * gdk_x11_display_grab().
666 gdk_x11_display_ungrab (GdkDisplay * display)
668 GdkDisplayX11 *display_x11;
670 g_return_if_fail (GDK_IS_DISPLAY (display));
672 display_x11 = GDK_DISPLAY_X11 (display);;
673 g_return_if_fail (display_x11->grab_count > 0);
675 display_x11->grab_count--;
676 if (display_x11->grab_count == 0)
678 XUngrabServer (display_x11->xdisplay);
679 XFlush (display_x11->xdisplay);
684 gdk_display_x11_dispose (GObject *object)
686 GdkDisplayX11 *display_x11;
689 display_x11 = GDK_DISPLAY_X11 (object);
691 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
692 _gdk_screen_close (display_x11->screens[i]);
694 g_source_destroy (display_x11->event_source);
696 XCloseDisplay (display_x11->xdisplay);
697 display_x11->xdisplay = NULL;
699 G_OBJECT_CLASS (parent_class)->dispose (object);
703 gdk_display_x11_finalize (GObject *object)
705 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (object);
708 /* FIXME need to write GdkKeymap finalize fct
709 g_object_unref (display_x11->keymap);
712 if (display_x11->motif_target_lists)
714 for (i = 0; i < display_x11->motif_n_target_lists; i++)
715 g_list_free (display_x11->motif_target_lists[i]);
716 g_free (display_x11->motif_target_lists);
720 g_hash_table_destroy (display_x11->atom_from_virtual);
721 g_hash_table_destroy (display_x11->atom_to_virtual);
723 XDestroyWindow (display_x11->xdisplay, display_x11->leader_window);
724 /* list of filters for client messages */
725 g_list_free (display_x11->client_filters);
726 /* List of event window extraction functions */
727 g_slist_foreach (display_x11->event_types, (GFunc)g_free, NULL);
728 g_slist_free (display_x11->event_types);
730 g_hash_table_destroy (display_x11->xid_ht);
731 /* input GdkDevice list */
732 /* FIXME need to write finalize fct */
733 for (tmp = display_x11->input_devices; tmp; tmp = tmp->next)
734 g_object_unref (tmp->data);
735 g_list_free (display_x11->input_devices);
736 /* input GdkWindow list */
737 for (tmp = display_x11->input_windows; tmp; tmp = tmp->next)
738 g_object_unref (tmp->data);
739 g_list_free (display_x11->input_windows);
740 /* Free all GdkScreens */
741 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
742 g_object_unref (display_x11->screens[i]);
743 g_free (display_x11->screens);
744 g_free (display_x11->startup_notification_id);
746 G_OBJECT_CLASS (parent_class)->finalize (object);
750 * gdk_x11_lookup_xdisplay:
751 * @xdisplay: a pointer to an X Display
753 * Find the #GdkDisplay corresponding to @display, if any exists.
755 * Return value: the #GdkDisplay, if found, otherwise %NULL.
760 gdk_x11_lookup_xdisplay (Display *xdisplay)
764 for (tmp_list = _gdk_displays; tmp_list; tmp_list = tmp_list->next)
766 if (GDK_DISPLAY_XDISPLAY (tmp_list->data) == xdisplay)
767 return tmp_list->data;
774 * _gdk_x11_display_screen_for_xrootwin:
775 * @display: a #Display
776 * @xrootwin: window ID for one of of the screen's of the display.
778 * Given the root window ID of one of the screen's of a #GdkDisplay,
781 * Return value: the #GdkScreen corresponding to @xrootwin, or %NULL.
784 _gdk_x11_display_screen_for_xrootwin (GdkDisplay *display,
789 n_screens = gdk_display_get_n_screens (display);
790 for (i = 0; i < n_screens; i++)
792 GdkScreen *screen = gdk_display_get_screen (display, i);
793 if (GDK_SCREEN_XROOTWIN (screen) == xrootwin)
801 * gdk_x11_display_get_xdisplay:
802 * @display: a #GdkDisplay
803 * @returns: an X display.
805 * Returns the X display of a #GdkDisplay.
810 gdk_x11_display_get_xdisplay (GdkDisplay *display)
812 return GDK_DISPLAY_X11 (display)->xdisplay;
816 _gdk_windowing_set_default_display (GdkDisplay *display)
818 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
819 const gchar *startup_id;
822 gdk_display = GDK_DISPLAY_XDISPLAY (display);
826 g_free (display_x11->startup_notification_id);
827 display_x11->startup_notification_id = NULL;
829 startup_id = g_getenv ("DESKTOP_STARTUP_ID");
830 if (startup_id && *startup_id != '\0')
832 if (!g_utf8_validate (startup_id, -1, NULL))
833 g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8");
835 display_x11->startup_notification_id = g_strdup (startup_id);
837 /* Clear the environment variable so it won't be inherited by
838 * child processes and confuse things.
840 g_unsetenv ("DESKTOP_STARTUP_ID");
842 /* Set the startup id on the leader window so it
843 * applies to all windows we create on this display
845 XChangeProperty (display_x11->xdisplay,
846 display_x11->leader_window,
847 gdk_x11_get_xatom_by_name_for_display (display, "_NET_STARTUP_ID"),
848 gdk_x11_get_xatom_by_name_for_display (display, "UTF8_STRING"), 8,
850 startup_id, strlen (startup_id));
855 escape_for_xmessage (const char *str)
860 retval = g_string_new (NULL);
870 g_string_append_c (retval, '\\');
874 g_string_append_c (retval, *p);
878 return g_string_free (retval, FALSE);
882 broadcast_xmessage (GdkDisplay *display,
883 const char *message_type,
884 const char *message_type_begin,
887 Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
888 GdkScreen *screen = gdk_display_get_default_screen (display);
889 GdkWindow *root_window = gdk_screen_get_root_window (screen);
890 Window xroot_window = GDK_WINDOW_XID (root_window);
893 Atom type_atom_begin;
897 XSetWindowAttributes attrs;
899 attrs.override_redirect = True;
900 attrs.event_mask = PropertyChangeMask | StructureNotifyMask;
903 XCreateWindow (xdisplay,
910 CWOverrideRedirect | CWEventMask,
914 type_atom = gdk_x11_get_xatom_by_name_for_display (display,
916 type_atom_begin = gdk_x11_get_xatom_by_name_for_display (display,
926 xevent.xclient.type = ClientMessage;
927 xevent.xclient.message_type = type_atom_begin;
928 xevent.xclient.display =xdisplay;
929 xevent.xclient.window = xwindow;
930 xevent.xclient.format = 8;
933 src_end = message + strlen (message) + 1; /* +1 to include nul byte */
935 while (src != src_end)
937 dest = &xevent.xclient.data.b[0];
938 dest_end = dest + 20;
940 while (dest != dest_end &&
948 while (dest != dest_end)
954 XSendEvent (xdisplay,
960 xevent.xclient.message_type = type_atom;
964 XDestroyWindow (xdisplay, xwindow);
969 * gdk_notify_startup_complete:
971 * Indicates to the GUI environment that the application has finished
972 * loading. If the applications opens windows, this function is
973 * normally called after opening the application's initial set of
976 * GTK+ will call this function automatically after opening the first
977 * #GtkWindow unless gtk_window_set_auto_startup_notification() is called
978 * to disable that feature.
983 gdk_notify_startup_complete (void)
986 GdkDisplayX11 *display_x11;
990 display = gdk_display_get_default ();
994 display_x11 = GDK_DISPLAY_X11 (display);
996 if (display_x11->startup_notification_id == NULL)
999 escaped_id = escape_for_xmessage (display_x11->startup_notification_id);
1000 message = g_strdup_printf ("remove: ID=%s", escaped_id);
1001 g_free (escaped_id);
1003 broadcast_xmessage (display,
1004 "_NET_STARTUP_INFO",
1005 "_NET_STARTUP_INFO_BEGIN",
1013 * gdk_display_supports_selection_notification:
1014 * @display: a #GdkDisplay
1016 * Returns whether #GdkEventOwnerChange events will be
1017 * sent when the owner of a selection changes.
1019 * Return value: whether #GdkEventOwnerChange events will
1025 gdk_display_supports_selection_notification (GdkDisplay *display)
1027 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
1029 return display_x11->have_xfixes;
1033 * gdk_display_request_selection_notification:
1034 * @display: a #GdkDisplay
1035 * @selection: the #GdkAtom naming the selection for which
1036 * ownership change notification is requested
1038 * Request #GdkEventOwnerChange events for ownership changes
1039 * of the selection named by the given atom.
1041 * Return value: whether #GdkEventOwnerChange events will
1046 gboolean gdk_display_request_selection_notification (GdkDisplay *display,
1051 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
1054 if (display_x11->have_xfixes)
1056 atom = gdk_x11_atom_to_xatom_for_display (display,
1058 XFixesSelectSelectionInput (display_x11->xdisplay,
1059 display_x11->leader_window,
1061 XFixesSetSelectionOwnerNotifyMask |
1062 XFixesSelectionWindowDestroyNotifyMask |
1063 XFixesSelectionClientCloseNotifyMask);