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.
26 #include "gdkdisplay.h"
27 #include "gdkdisplayprivate.h"
29 #include "gdkdeviceprivate.h"
30 #include "gdkevents.h"
31 #include "gdkwindowimpl.h"
32 #include "gdkinternals.h"
33 #include "gdkmarshalers.h"
34 #include "gdkscreen.h"
41 * @Short_description: Controls a set of GdkScreens and their associated input devices
44 * #GdkDisplay objects purpose are two fold:
47 * To manage and provide information about input devices (pointers
51 * To manage and provide information about the available #GdkScreens
55 * GdkDisplay objects are the GDK representation of an X Display,
56 * which can be described as <emphasis>a workstation consisting of
57 * a keyboard, a pointing device (such as a mouse) and one or more
59 * It is used to open and keep track of various GdkScreen objects
60 * currently instantiated by the application. It is also used to
61 * access the keyboard(s) and mouse pointer(s) of the display.
63 * Most of the input device handling has been factored out into
64 * the separate #GdkDeviceManager object. Every display has a
65 * device manager, which you can obtain using
66 * gdk_display_get_device_manager().
76 static void gdk_display_dispose (GObject *object);
77 static void gdk_display_finalize (GObject *object);
80 static GdkAppLaunchContext *gdk_display_real_get_app_launch_context (GdkDisplay *display);
82 static guint signals[LAST_SIGNAL] = { 0 };
84 G_DEFINE_TYPE (GdkDisplay, gdk_display, G_TYPE_OBJECT)
87 gdk_display_class_init (GdkDisplayClass *class)
89 GObjectClass *object_class = G_OBJECT_CLASS (class);
91 object_class->finalize = gdk_display_finalize;
92 object_class->dispose = gdk_display_dispose;
94 class->get_app_launch_context = gdk_display_real_get_app_launch_context;
95 class->window_type = GDK_TYPE_WINDOW;
99 * @display: the object on which the signal is emitted
101 * The ::opened signal is emitted when the connection to the windowing
102 * system for @display is opened.
105 g_signal_new (g_intern_static_string ("opened"),
106 G_OBJECT_CLASS_TYPE (object_class),
109 g_cclosure_marshal_VOID__VOID,
113 * GdkDisplay::closed:
114 * @display: the object on which the signal is emitted
115 * @is_error: %TRUE if the display was closed due to an error
117 * The ::closed signal is emitted when the connection to the windowing
118 * system for @display is closed.
123 g_signal_new (g_intern_static_string ("closed"),
124 G_OBJECT_CLASS_TYPE (object_class),
126 G_STRUCT_OFFSET (GdkDisplayClass, closed),
128 _gdk_marshal_VOID__BOOLEAN,
135 free_pointer_info (GdkPointerWindowInfo *info)
137 g_object_unref (info->toplevel_under_pointer);
138 g_slice_free (GdkPointerWindowInfo, info);
142 free_device_grab (GdkDeviceGrabInfo *info)
144 g_object_unref (info->window);
145 g_object_unref (info->native_window);
150 free_device_grabs_foreach (gpointer key,
156 g_list_foreach (list, (GFunc) free_device_grab, NULL);
163 device_removed_cb (GdkDeviceManager *device_manager,
167 g_hash_table_remove (display->multiple_click_info, device);
168 g_hash_table_remove (display->device_grabs, device);
169 g_hash_table_remove (display->pointers_info, device);
171 /* FIXME: change core pointer and remove from device list */
175 gdk_display_opened (GdkDisplay *display)
177 GdkDeviceManager *device_manager;
179 device_manager = gdk_display_get_device_manager (display);
181 g_signal_connect (device_manager, "device-removed",
182 G_CALLBACK (device_removed_cb), display);
186 gdk_display_init (GdkDisplay *display)
188 display->double_click_time = 250;
189 display->double_click_distance = 5;
191 display->device_grabs = g_hash_table_new (NULL, NULL);
192 display->motion_hint_info = g_hash_table_new_full (NULL, NULL, NULL,
193 (GDestroyNotify) g_free);
195 display->pointers_info = g_hash_table_new_full (NULL, NULL, NULL,
196 (GDestroyNotify) free_pointer_info);
198 display->multiple_click_info = g_hash_table_new_full (NULL, NULL, NULL,
199 (GDestroyNotify) g_free);
201 g_signal_connect (display, "opened",
202 G_CALLBACK (gdk_display_opened), NULL);
206 gdk_display_dispose (GObject *object)
208 GdkDisplay *display = GDK_DISPLAY (object);
209 GdkDeviceManager *device_manager;
211 device_manager = gdk_display_get_device_manager (GDK_DISPLAY (object));
213 g_list_foreach (display->queued_events, (GFunc)gdk_event_free, NULL);
214 g_list_free (display->queued_events);
215 display->queued_events = NULL;
216 display->queued_tail = NULL;
220 /* this is to make it drop devices which may require using the X
221 * display and therefore can't be cleaned up in finalize.
222 * It will also disconnect device_removed_cb
224 g_object_run_dispose (G_OBJECT (display->device_manager));
227 G_OBJECT_CLASS (gdk_display_parent_class)->dispose (object);
231 gdk_display_finalize (GObject *object)
233 GdkDisplay *display = GDK_DISPLAY (object);
235 g_hash_table_foreach_remove (display->device_grabs,
236 free_device_grabs_foreach,
238 g_hash_table_destroy (display->device_grabs);
240 g_hash_table_destroy (display->pointers_info);
241 g_hash_table_destroy (display->multiple_click_info);
243 if (display->device_manager)
244 g_object_unref (display->device_manager);
246 G_OBJECT_CLASS (gdk_display_parent_class)->finalize (object);
251 * @display: a #GdkDisplay
253 * Closes the connection to the windowing system for the given display,
254 * and cleans up associated resources.
259 gdk_display_close (GdkDisplay *display)
261 g_return_if_fail (GDK_IS_DISPLAY (display));
263 if (!display->closed)
265 display->closed = TRUE;
267 g_signal_emit (display, signals[CLOSED], 0, FALSE);
268 g_object_run_dispose (G_OBJECT (display));
270 g_object_unref (display);
275 * gdk_display_is_closed:
276 * @display: a #GdkDisplay
278 * Finds out if the display has been closed.
280 * Returns: %TRUE if the display is closed.
285 gdk_display_is_closed (GdkDisplay *display)
287 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
289 return display->closed;
293 * gdk_display_get_event:
294 * @display: a #GdkDisplay
296 * Gets the next #GdkEvent to be processed for @display, fetching events from the
297 * windowing system if necessary.
299 * Return value: the next #GdkEvent to be processed, or %NULL if no events
300 * are pending. The returned #GdkEvent should be freed with gdk_event_free().
305 gdk_display_get_event (GdkDisplay *display)
307 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
309 GDK_DISPLAY_GET_CLASS (display)->queue_events (display);
310 return _gdk_event_unqueue (display);
314 * gdk_display_peek_event:
315 * @display: a #GdkDisplay
317 * Gets a copy of the first #GdkEvent in the @display's event queue, without
318 * removing the event from the queue. (Note that this function will
319 * not get more events from the windowing system. It only checks the events
320 * that have already been moved to the GDK event queue.)
322 * Return value: a copy of the first #GdkEvent on the event queue, or %NULL
323 * if no events are in the queue. The returned #GdkEvent should be freed with
329 gdk_display_peek_event (GdkDisplay *display)
333 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
335 tmp_list = _gdk_event_queue_find_first (display);
338 return gdk_event_copy (tmp_list->data);
344 * gdk_display_put_event:
345 * @display: a #GdkDisplay
346 * @event: a #GdkEvent.
348 * Appends a copy of the given event onto the front of the event
349 * queue for @display.
354 gdk_display_put_event (GdkDisplay *display,
355 const GdkEvent *event)
357 g_return_if_fail (GDK_IS_DISPLAY (display));
358 g_return_if_fail (event != NULL);
360 _gdk_event_queue_append (display, gdk_event_copy (event));
361 /* If the main loop is blocking in a different thread, wake it up */
362 g_main_context_wakeup (NULL);
366 * gdk_display_pointer_ungrab:
367 * @display: a #GdkDisplay.
368 * @time_: a timestap (e.g. %GDK_CURRENT_TIME).
370 * Release any pointer grab.
374 * Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
378 gdk_display_pointer_ungrab (GdkDisplay *display,
381 GdkDeviceManager *device_manager;
382 GList *devices, *dev;
385 g_return_if_fail (GDK_IS_DISPLAY (display));
387 device_manager = gdk_display_get_device_manager (display);
388 devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
390 /* FIXME: Should this be generic to all backends? */
391 /* FIXME: What happens with extended devices? */
392 for (dev = devices; dev; dev = dev->next)
396 if (gdk_device_get_source (device) != GDK_SOURCE_MOUSE)
399 gdk_device_ungrab (device, time_);
402 g_list_free (devices);
406 * gdk_pointer_ungrab:
407 * @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no
408 * timestamp is available.
410 * Ungrabs the pointer on the default display, if it is grabbed by this
413 * Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
417 gdk_pointer_ungrab (guint32 time)
419 gdk_display_pointer_ungrab (gdk_display_get_default (), time);
423 * gdk_pointer_is_grabbed:
425 * Returns %TRUE if the pointer on the default display is currently
426 * grabbed by this application.
428 * Note that this does not take the inmplicit pointer grab on button
429 * presses into account.
431 * Return value: %TRUE if the pointer is currently grabbed by this application.
433 * Deprecated: 3.0: Use gdk_display_device_is_grabbed() instead.
436 gdk_pointer_is_grabbed (void)
438 return gdk_display_pointer_is_grabbed (gdk_display_get_default ());
442 * gdk_display_keyboard_ungrab:
443 * @display: a #GdkDisplay.
444 * @time_: a timestap (e.g #GDK_CURRENT_TIME).
446 * Release any keyboard grab
450 * Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
454 gdk_display_keyboard_ungrab (GdkDisplay *display,
457 GdkDeviceManager *device_manager;
458 GList *devices, *dev;
461 g_return_if_fail (GDK_IS_DISPLAY (display));
463 device_manager = gdk_display_get_device_manager (display);
464 devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
466 /* FIXME: Should this be generic to all backends? */
467 /* FIXME: What happens with extended devices? */
468 for (dev = devices; dev; dev = dev->next)
472 if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
475 gdk_device_ungrab (device, time);
478 g_list_free (devices);
482 * gdk_keyboard_ungrab:
483 * @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no
484 * timestamp is available.
486 * Ungrabs the keyboard on the default display, if it is grabbed by this
489 * Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
493 gdk_keyboard_ungrab (guint32 time)
495 gdk_display_keyboard_ungrab (gdk_display_get_default (), time);
501 * Emits a short beep on the default display.
506 gdk_display_beep (gdk_display_get_default ());
512 * Flushes the output buffers of all display connections and waits
513 * until all requests have been processed.
514 * This is rarely needed by applications.
521 list = gdk_display_manager_list_displays (gdk_display_manager_get ());
522 for (l = list; l; l = l->next)
524 GdkDisplay *display = l->data;
526 GDK_DISPLAY_GET_CLASS (display)->sync (display);
533 _gdk_display_enable_motion_hints (GdkDisplay *display,
536 gulong *device_serial, serial;
538 device_serial = g_hash_table_lookup (display->motion_hint_info, device);
542 device_serial = g_new0 (gulong, 1);
543 *device_serial = G_MAXULONG;
544 g_hash_table_insert (display->motion_hint_info, device, device_serial);
547 if (*device_serial != 0)
549 serial = _gdk_display_get_next_serial (display);
550 /* We might not actually generate the next request, so
551 make sure this triggers always, this may cause it to
552 trigger slightly too early, but this is just a hint
556 if (serial < *device_serial)
557 *device_serial = serial;
562 * gdk_display_get_pointer:
563 * @display: a #GdkDisplay
564 * @screen: (out) (allow-none): location to store the screen that the
565 * cursor is on, or %NULL.
566 * @x: (out) (allow-none): location to store root window X coordinate of pointer, or %NULL.
567 * @y: (out) (allow-none): location to store root window Y coordinate of pointer, or %NULL.
568 * @mask: (out) (allow-none): location to store current modifier mask, or %NULL
570 * Gets the current location of the pointer and the current modifier
571 * mask for a given display.
575 * Deprecated: 3.0: Use gdk_device_get_position() instead.
578 gdk_display_get_pointer (GdkDisplay *display,
582 GdkModifierType *mask)
584 GdkScreen *default_screen;
587 GdkModifierType tmp_mask;
589 g_return_if_fail (GDK_IS_DISPLAY (display));
591 if (gdk_display_is_closed (display))
594 default_screen = gdk_display_get_default_screen (display);
596 /* We call _gdk_device_query_state() here manually instead of
597 * gdk_device_get_position() because we care about the modifier mask */
599 _gdk_device_query_state (display->core_pointer,
600 gdk_screen_get_root_window (default_screen),
607 *screen = gdk_window_get_screen (root);
617 * gdk_display_get_window_at_pointer:
618 * @display: a #GdkDisplay
619 * @win_x: (out) (allow-none): return location for x coordinate of the pointer location relative
620 * to the window origin, or %NULL
621 * @win_y: (out) (allow-none): return location for y coordinate of the pointer location relative
622 & to the window origin, or %NULL
624 * Obtains the window underneath the mouse pointer, returning the location
625 * of the pointer in that window in @win_x, @win_y for @screen. Returns %NULL
626 * if the window under the mouse pointer is not known to GDK (for example,
627 * belongs to another application).
629 * Returns: (transfer none): the window under the mouse pointer, or %NULL
633 * Deprecated: 3.0: Use gdk_device_get_window_at_position() instead.
636 gdk_display_get_window_at_pointer (GdkDisplay *display,
640 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
642 return gdk_device_get_window_at_position (display->core_pointer, win_x, win_y);
646 generate_grab_broken_event (GdkWindow *window,
649 GdkWindow *grab_window)
651 g_return_if_fail (window != NULL);
653 if (!GDK_WINDOW_DESTROYED (window))
657 event = gdk_event_new (GDK_GRAB_BROKEN);
658 event->grab_broken.window = g_object_ref (window);
659 event->grab_broken.send_event = FALSE;
660 event->grab_broken.implicit = implicit;
661 event->grab_broken.grab_window = grab_window;
662 gdk_event_set_device (event, device);
663 event->grab_broken.keyboard = (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD) ? TRUE : FALSE;
665 gdk_event_put (event);
666 gdk_event_free (event);
671 _gdk_display_get_last_device_grab (GdkDisplay *display,
676 l = g_hash_table_lookup (display->device_grabs, device);
688 _gdk_display_add_device_grab (GdkDisplay *display,
691 GdkWindow *native_window,
692 GdkGrabOwnership grab_ownership,
693 gboolean owner_events,
694 GdkEventMask event_mask,
695 unsigned long serial_start,
699 GdkDeviceGrabInfo *info, *other_info;
702 info = g_new0 (GdkDeviceGrabInfo, 1);
704 info->window = g_object_ref (window);
705 info->native_window = g_object_ref (native_window);
706 info->serial_start = serial_start;
707 info->serial_end = G_MAXULONG;
708 info->owner_events = owner_events;
709 info->event_mask = event_mask;
711 info->implicit = implicit;
712 info->ownership = grab_ownership;
714 grabs = g_hash_table_lookup (display->device_grabs, device);
716 /* Find the first grab that has a larger start time (if any) and insert
717 * before that. I.E we insert after already existing grabs with same
719 for (l = grabs; l != NULL; l = l->next)
721 other_info = l->data;
723 if (info->serial_start < other_info->serial_start)
727 grabs = g_list_insert_before (grabs, l, info);
729 /* Make sure the new grab end before next grab */
732 other_info = l->data;
733 info->serial_end = other_info->serial_start;
736 /* Find any previous grab and update its end time */
737 l = g_list_find (grabs, info);
741 other_info = l->data;
742 other_info->serial_end = serial_start;
745 g_hash_table_insert (display->device_grabs, device, grabs);
750 /* _gdk_synthesize_crossing_events only works inside one toplevel.
751 This function splits things into two calls if needed, converting the
752 coordinates to the right toplevel */
754 synthesize_crossing_events (GdkDisplay *display,
756 GdkDevice *source_device,
757 GdkWindow *src_window,
758 GdkWindow *dest_window,
759 GdkCrossingMode crossing_mode,
763 GdkWindow *src_toplevel, *dest_toplevel;
764 GdkModifierType state;
768 src_toplevel = gdk_window_get_toplevel (src_window);
772 dest_toplevel = gdk_window_get_toplevel (dest_window);
774 dest_toplevel = NULL;
776 if (src_toplevel == NULL && dest_toplevel == NULL)
779 if (src_toplevel == NULL ||
780 src_toplevel == dest_toplevel)
783 gdk_window_get_pointer (dest_toplevel,
785 _gdk_synthesize_crossing_events (display,
788 device, source_device,
795 else if (dest_toplevel == NULL)
797 gdk_window_get_pointer (src_toplevel,
799 _gdk_synthesize_crossing_events (display,
802 device, source_device,
811 /* Different toplevels */
812 gdk_window_get_pointer (src_toplevel,
814 _gdk_synthesize_crossing_events (display,
817 device, source_device,
823 gdk_window_get_pointer (dest_toplevel,
825 _gdk_synthesize_crossing_events (display,
828 device, source_device,
838 get_current_toplevel (GdkDisplay *display,
842 GdkModifierType *state_out)
844 GdkWindow *pointer_window;
846 GdkModifierType state;
848 pointer_window = _gdk_device_window_at_position (device, &x, &y, &state, TRUE);
850 if (pointer_window != NULL &&
851 (GDK_WINDOW_DESTROYED (pointer_window) ||
852 GDK_WINDOW_TYPE (pointer_window) == GDK_WINDOW_ROOT ||
853 GDK_WINDOW_TYPE (pointer_window) == GDK_WINDOW_FOREIGN))
854 pointer_window = NULL;
860 return pointer_window;
864 switch_to_pointer_grab (GdkDisplay *display,
866 GdkDevice *source_device,
867 GdkDeviceGrabInfo *grab,
868 GdkDeviceGrabInfo *last_grab,
872 GdkWindow *src_window, *pointer_window, *new_toplevel;
873 GdkPointerWindowInfo *info;
875 GdkModifierType state;
878 /* Temporarily unset pointer to make sure we send the crossing events below */
879 old_grabs = g_hash_table_lookup (display->device_grabs, device);
880 g_hash_table_steal (display->device_grabs, device);
881 info = _gdk_display_get_pointer_info (display, device);
885 /* New grab is in effect */
887 /* We need to generate crossing events for the grab.
888 * However, there are never any crossing events for implicit grabs
889 * TODO: ... Actually, this could happen if the pointer window
890 * doesn't have button mask so a parent gets the event...
894 /* We send GRAB crossing events from the window under the pointer to the
895 grab window. Except if there is an old grab then we start from that */
897 src_window = last_grab->window;
899 src_window = info->window_under_pointer;
901 if (src_window != grab->window)
902 synthesize_crossing_events (display, device, source_device,
903 src_window, grab->window,
904 GDK_CROSSING_GRAB, time, serial);
906 /* !owner_event Grabbing a window that we're not inside, current status is
907 now NULL (i.e. outside grabbed window) */
908 if (!grab->owner_events && info->window_under_pointer != grab->window)
909 _gdk_display_set_window_under_pointer (display, device, NULL);
912 grab->activated = TRUE;
919 if (grab == NULL /* ungrab */ ||
920 (!last_grab->owner_events && grab->owner_events) /* switched to owner_events */ )
922 /* We force check what window we're in, and update the toplevel_under_pointer info,
923 * as that won't get told of this change with toplevel enter events.
925 if (info->toplevel_under_pointer)
926 g_object_unref (info->toplevel_under_pointer);
927 info->toplevel_under_pointer = NULL;
929 /* Ungrabbed slave devices don't have a position by
930 * itself, rather depend on its master pointer, so
931 * it doesn't make sense to track any position for
932 * these after the grab
934 if (grab || gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_SLAVE)
935 new_toplevel = get_current_toplevel (display, device, &x, &y, &state);
939 /* w is now toplevel and x,y in toplevel coords */
940 info->toplevel_under_pointer = g_object_ref (new_toplevel);
941 info->toplevel_x = x;
942 info->toplevel_y = y;
947 if (grab == NULL) /* Ungrabbed, send events */
949 pointer_window = NULL;
952 /* Find (possibly virtual) child window */
954 _gdk_window_find_descendant_at (new_toplevel,
959 if (pointer_window != last_grab->window)
960 synthesize_crossing_events (display, device, source_device,
961 last_grab->window, pointer_window,
962 GDK_CROSSING_UNGRAB, time, serial);
964 /* We're now ungrabbed, update the window_under_pointer */
965 _gdk_display_set_window_under_pointer (display, device, pointer_window);
969 g_hash_table_insert (display->device_grabs, device, old_grabs);
973 _gdk_display_device_grab_update (GdkDisplay *display,
975 GdkDevice *source_device,
976 gulong current_serial)
978 GdkDeviceGrabInfo *current_grab, *next_grab;
982 time = display->last_event_time;
983 grabs = g_hash_table_lookup (display->device_grabs, device);
985 while (grabs != NULL)
987 current_grab = grabs->data;
989 if (current_grab->serial_start > current_serial)
990 return; /* Hasn't started yet */
992 if (current_grab->serial_end > current_serial)
994 /* This one hasn't ended yet.
995 its the currently active one or scheduled to be active */
997 if (!current_grab->activated)
999 if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
1000 switch_to_pointer_grab (display, device, source_device, current_grab, NULL, time, current_serial);
1009 /* This is the next active grab */
1010 next_grab = grabs->next->data;
1012 if (next_grab->serial_start > current_serial)
1013 next_grab = NULL; /* Actually its not yet active */
1016 if ((next_grab == NULL && current_grab->implicit_ungrab) ||
1017 (next_grab != NULL && current_grab->window != next_grab->window))
1018 generate_grab_broken_event (GDK_WINDOW (current_grab->window),
1020 current_grab->implicit,
1021 next_grab? next_grab->window : NULL);
1023 /* Remove old grab */
1024 grabs = g_list_delete_link (grabs, grabs);
1025 g_hash_table_insert (display->device_grabs, device, grabs);
1027 if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
1028 switch_to_pointer_grab (display, device, source_device,
1029 next_grab, current_grab,
1030 time, current_serial);
1032 free_device_grab (current_grab);
1037 grab_list_find (GList *grabs,
1040 GdkDeviceGrabInfo *grab;
1046 if (serial >= grab->serial_start && serial < grab->serial_end)
1049 grabs = grabs->next;
1056 find_device_grab (GdkDisplay *display,
1062 l = g_hash_table_lookup (display->device_grabs, device);
1063 return grab_list_find (l, serial);
1067 _gdk_display_has_device_grab (GdkDisplay *display,
1073 l = find_device_grab (display, device, serial);
1080 /* Returns true if last grab was ended
1081 * If if_child is non-NULL, end the grab only if the grabbed
1082 * window is the same as if_child or a descendant of it */
1084 _gdk_display_end_device_grab (GdkDisplay *display,
1087 GdkWindow *if_child,
1090 GdkDeviceGrabInfo *grab;
1093 l = find_device_grab (display, device, serial);
1100 (if_child == NULL ||
1101 _gdk_window_event_parent_of (if_child, grab->window)))
1103 grab->serial_end = serial;
1104 grab->implicit_ungrab = implicit;
1105 return l->next == NULL;
1111 /* Returns TRUE if device events are not blocked by any grab */
1113 _gdk_display_check_grab_ownership (GdkDisplay *display,
1117 GHashTableIter iter;
1118 gpointer key, value;
1119 GdkGrabOwnership higher_ownership, device_ownership;
1120 gboolean device_is_keyboard;
1122 g_hash_table_iter_init (&iter, display->device_grabs);
1123 higher_ownership = device_ownership = GDK_OWNERSHIP_NONE;
1124 device_is_keyboard = (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD);
1126 while (g_hash_table_iter_next (&iter, &key, &value))
1128 GdkDeviceGrabInfo *grab;
1134 grabs = grab_list_find (grabs, serial);
1139 /* Discard device if it's not of the same type */
1140 if ((device_is_keyboard && gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD) ||
1141 (!device_is_keyboard && gdk_device_get_source (dev) == GDK_SOURCE_KEYBOARD))
1147 device_ownership = grab->ownership;
1150 if (grab->ownership > higher_ownership)
1151 higher_ownership = grab->ownership;
1155 if (higher_ownership > device_ownership)
1157 /* There's a higher priority ownership
1158 * going on for other device(s)
1166 GdkPointerWindowInfo *
1167 _gdk_display_get_pointer_info (GdkDisplay *display,
1170 GdkPointerWindowInfo *info;
1172 if (G_UNLIKELY (!device))
1175 info = g_hash_table_lookup (display->pointers_info, device);
1177 if (G_UNLIKELY (!info))
1179 info = g_slice_new0 (GdkPointerWindowInfo);
1180 g_hash_table_insert (display->pointers_info, device, info);
1187 _gdk_display_pointer_info_foreach (GdkDisplay *display,
1188 GdkDisplayPointerInfoForeach func,
1191 GHashTableIter iter;
1192 gpointer key, value;
1194 g_hash_table_iter_init (&iter, display->pointers_info);
1196 while (g_hash_table_iter_next (&iter, &key, &value))
1198 GdkPointerWindowInfo *info = value;
1199 GdkDevice *device = key;
1201 (func) (display, device, info, user_data);
1206 * gdk_device_grab_info_libgtk_only:
1207 * @display: the display for which to get the grab information
1208 * @device: device to get the grab information from
1209 * @grab_window: (out) (transfer none): location to store current grab window
1210 * @owner_events: (out): location to store boolean indicating whether
1211 * the @owner_events flag to gdk_keyboard_grab() or
1212 * gdk_pointer_grab() was %TRUE.
1214 * Determines information about the current keyboard grab.
1215 * This is not public API and must not be used by applications.
1217 * Return value: %TRUE if this application currently has the
1221 gdk_device_grab_info_libgtk_only (GdkDisplay *display,
1223 GdkWindow **grab_window,
1224 gboolean *owner_events)
1226 GdkDeviceGrabInfo *info;
1228 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1229 g_return_val_if_fail (GDK_IS_DEVICE (device), FALSE);
1231 info = _gdk_display_get_last_device_grab (display, device);
1236 *grab_window = info->window;
1238 *owner_events = info->owner_events;
1247 * gdk_display_pointer_is_grabbed:
1248 * @display: a #GdkDisplay
1250 * Test if the pointer is grabbed.
1252 * Returns: %TRUE if an active X pointer grab is in effect
1256 * Deprecated: 3.0: Use gdk_display_device_is_grabbed() instead.
1259 gdk_display_pointer_is_grabbed (GdkDisplay *display)
1261 GdkDeviceManager *device_manager;
1262 GList *devices, *dev;
1265 g_return_val_if_fail (GDK_IS_DISPLAY (display), TRUE);
1267 device_manager = gdk_display_get_device_manager (display);
1268 devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
1270 for (dev = devices; dev; dev = dev->next)
1274 if (gdk_device_get_source (device) == GDK_SOURCE_MOUSE &&
1275 gdk_display_device_is_grabbed (display, device))
1283 * gdk_display_device_is_grabbed:
1284 * @display: a #GdkDisplay
1285 * @device: a #GdkDevice
1287 * Returns %TRUE if there is an ongoing grab on @device for @display.
1289 * Returns: %TRUE if there is a grab in effect for @device.
1292 gdk_display_device_is_grabbed (GdkDisplay *display,
1295 GdkDeviceGrabInfo *info;
1297 g_return_val_if_fail (GDK_IS_DISPLAY (display), TRUE);
1298 g_return_val_if_fail (GDK_IS_DEVICE (device), TRUE);
1300 /* What we're interested in is the steady state (ie last grab),
1301 because we're interested e.g. if we grabbed so that we
1302 can ungrab, even if our grab is not active just yet. */
1303 info = _gdk_display_get_last_device_grab (display, device);
1305 return (info && !info->implicit);
1309 * gdk_display_get_device_manager:
1310 * @display: a #GdkDisplay.
1312 * Returns the #GdkDeviceManager associated to @display.
1314 * Returns: (transfer none): A #GdkDeviceManager, or %NULL. This memory is
1315 * owned by GDK and must not be freed or unreferenced.
1320 gdk_display_get_device_manager (GdkDisplay *display)
1322 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1324 return display->device_manager;
1328 * gdk_display_get_name:
1329 * @display: a #GdkDisplay
1331 * Gets the name of the display.
1333 * Returns: a string representing the display name. This string is owned
1334 * by GDK and should not be modified or freed.
1338 G_CONST_RETURN gchar *
1339 gdk_display_get_name (GdkDisplay *display)
1341 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1343 return GDK_DISPLAY_GET_CLASS (display)->get_name (display);
1347 gdk_get_display (void)
1349 return g_strdup (gdk_display_get_name (gdk_display_get_default ()));
1353 * gdk_display_get_n_screens:
1354 * @display: a #GdkDisplay
1356 * Gets the number of screen managed by the @display.
1358 * Returns: number of screens.
1363 gdk_display_get_n_screens (GdkDisplay *display)
1365 g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
1367 return GDK_DISPLAY_GET_CLASS (display)->get_n_screens (display);
1371 * gdk_display_get_screen:
1372 * @display: a #GdkDisplay
1373 * @screen_num: the screen number
1375 * Returns a screen object for one of the screens of the display.
1377 * Returns: (transfer none): the #GdkScreen object
1382 gdk_display_get_screen (GdkDisplay *display,
1385 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1387 return GDK_DISPLAY_GET_CLASS (display)->get_screen (display, screen_num);
1391 * gdk_display_get_default_screen:
1392 * @display: a #GdkDisplay
1394 * Get the default #GdkScreen for @display.
1396 * Returns: (transfer none): the default #GdkScreen object for @display
1401 gdk_display_get_default_screen (GdkDisplay *display)
1403 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1405 return GDK_DISPLAY_GET_CLASS (display)->get_default_screen (display);
1410 * @display: a #GdkDisplay
1412 * Emits a short beep on @display
1417 gdk_display_beep (GdkDisplay *display)
1419 g_return_if_fail (GDK_IS_DISPLAY (display));
1421 GDK_DISPLAY_GET_CLASS (display)->beep (display);
1426 * @display: a #GdkDisplay
1428 * Flushes any requests queued for the windowing system and waits until all
1429 * requests have been handled. This is often used for making sure that the
1430 * display is synchronized with the current state of the program. Calling
1431 * gdk_display_sync() before gdk_error_trap_pop() makes sure that any errors
1432 * generated from earlier requests are handled before the error trap is
1435 * This is most useful for X11. On windowing systems where requests are
1436 * handled synchronously, this function will do nothing.
1441 gdk_display_sync (GdkDisplay *display)
1443 g_return_if_fail (GDK_IS_DISPLAY (display));
1445 GDK_DISPLAY_GET_CLASS (display)->sync (display);
1449 * gdk_display_flush:
1450 * @display: a #GdkDisplay
1452 * Flushes any requests queued for the windowing system; this happens automatically
1453 * when the main loop blocks waiting for new events, but if your application
1454 * is drawing without returning control to the main loop, you may need
1455 * to call this function explicitely. A common case where this function
1456 * needs to be called is when an application is executing drawing commands
1457 * from a thread other than the thread where the main loop is running.
1459 * This is most useful for X11. On windowing systems where requests are
1460 * handled synchronously, this function will do nothing.
1465 gdk_display_flush (GdkDisplay *display)
1467 g_return_if_fail (GDK_IS_DISPLAY (display));
1469 GDK_DISPLAY_GET_CLASS (display)->flush (display);
1473 * gdk_display_get_default_group:
1474 * @display: a #GdkDisplay
1476 * Returns the default group leader window for all toplevel windows
1477 * on @display. This window is implicitly created by GDK.
1478 * See gdk_window_set_group().
1480 * Return value: (transfer none): The default group leader window
1486 gdk_display_get_default_group (GdkDisplay *display)
1488 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1490 return GDK_DISPLAY_GET_CLASS (display)->get_default_group (display);
1494 * gdk_display_supports_selection_notification:
1495 * @display: a #GdkDisplay
1497 * Returns whether #GdkEventOwnerChange events will be
1498 * sent when the owner of a selection changes.
1500 * Return value: whether #GdkEventOwnerChange events will
1506 gdk_display_supports_selection_notification (GdkDisplay *display)
1508 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1510 return GDK_DISPLAY_GET_CLASS (display)->supports_selection_notification (display);
1514 * gdk_display_request_selection_notification:
1515 * @display: a #GdkDisplay
1516 * @selection: the #GdkAtom naming the selection for which
1517 * ownership change notification is requested
1519 * Request #GdkEventOwnerChange events for ownership changes
1520 * of the selection named by the given atom.
1522 * Return value: whether #GdkEventOwnerChange events will
1528 gdk_display_request_selection_notification (GdkDisplay *display,
1532 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1534 return GDK_DISPLAY_GET_CLASS (display)->request_selection_notification (display, selection);
1538 * gdk_display_supports_clipboard_persistence
1539 * @display: a #GdkDisplay
1541 * Returns whether the speicifed display supports clipboard
1542 * persistance; i.e. if it's possible to store the clipboard data after an
1543 * application has quit. On X11 this checks if a clipboard daemon is
1546 * Returns: %TRUE if the display supports clipboard persistance.
1551 gdk_display_supports_clipboard_persistence (GdkDisplay *display)
1553 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1555 return GDK_DISPLAY_GET_CLASS (display)->supports_clipboard_persistence (display);
1559 * gdk_display_store_clipboard
1560 * @display: a #GdkDisplay
1561 * @clipboard_window: a #GdkWindow belonging to the clipboard owner
1562 * @time_: a timestamp
1563 * @targets: (array length=n_targets): an array of targets
1564 * that should be saved, or %NULL
1565 * if all available targets should be saved.
1566 * @n_targets: length of the @targets array
1568 * Issues a request to the clipboard manager to store the
1569 * clipboard data. On X11, this is a special program that works
1570 * according to the freedesktop clipboard specification, available at
1571 * <ulink url="http://www.freedesktop.org/Standards/clipboard-manager-spec">
1572 * http://www.freedesktop.org/Standards/clipboard-manager-spec</ulink>.
1577 gdk_display_store_clipboard (GdkDisplay *display,
1578 GdkWindow *clipboard_window,
1580 const GdkAtom *targets,
1583 g_return_if_fail (GDK_IS_DISPLAY (display));
1585 GDK_DISPLAY_GET_CLASS (display)->store_clipboard (display, clipboard_window, time_, targets, n_targets);
1589 * gdk_display_supports_shapes:
1590 * @display: a #GdkDisplay
1592 * Returns %TRUE if gdk_window_shape_combine_mask() can
1593 * be used to create shaped windows on @display.
1595 * Returns: %TRUE if shaped windows are supported
1600 gdk_display_supports_shapes (GdkDisplay *display)
1602 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1604 return GDK_DISPLAY_GET_CLASS (display)->supports_shapes (display);
1608 * gdk_display_supports_input_shapes:
1609 * @display: a #GdkDisplay
1611 * Returns %TRUE if gdk_window_input_shape_combine_mask() can
1612 * be used to modify the input shape of windows on @display.
1614 * Returns: %TRUE if windows with modified input shape are supported
1619 gdk_display_supports_input_shapes (GdkDisplay *display)
1621 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1623 return GDK_DISPLAY_GET_CLASS (display)->supports_input_shapes (display);
1627 * gdk_display_supports_composite:
1628 * @display: a #GdkDisplay
1630 * Returns %TRUE if gdk_window_set_composited() can be used
1631 * to redirect drawing on the window using compositing.
1633 * Currently this only works on X11 with XComposite and
1634 * XDamage extensions available.
1636 * Returns: %TRUE if windows may be composited.
1641 gdk_display_supports_composite (GdkDisplay *display)
1643 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1645 return GDK_DISPLAY_GET_CLASS (display)->supports_composite (display);
1649 * gdk_display_list_devices:
1650 * @display: a #GdkDisplay
1652 * Returns the list of available input devices attached to @display.
1653 * The list is statically allocated and should not be freed.
1655 * Return value: (transfer none) (element-type GdkDevice):
1656 * a list of #GdkDevice
1660 * Deprecated: 3.0: Use gdk_device_manager_list_devices() instead.
1663 gdk_display_list_devices (GdkDisplay *display)
1665 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1667 return GDK_DISPLAY_GET_CLASS (display)->list_devices (display);
1670 static GdkAppLaunchContext *
1671 gdk_display_real_get_app_launch_context (GdkDisplay *display)
1673 GdkAppLaunchContext *ctx;
1675 ctx = g_object_new (GDK_TYPE_APP_LAUNCH_CONTEXT,
1683 * gdk_display_get_app_launch_context:
1684 * @display: a #GdkDisplay
1686 * Returns a #GdkAppLaunchContext suitable for launching
1687 * applications on the given display.
1689 * Returns: (transfer full): a new #GdkAppLaunchContext for @display.
1690 * Free with g_object_unref() when done
1694 GdkAppLaunchContext *
1695 gdk_display_get_app_launch_context (GdkDisplay *display)
1697 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1699 return GDK_DISPLAY_GET_CLASS (display)->get_app_launch_context (display);
1704 * @display_name: the name of the display to open
1708 * Return value: (transfer none): a #GdkDisplay, or %NULL
1709 * if the display could not be opened
1714 gdk_display_open (const gchar *display_name)
1716 return gdk_display_manager_open_display (gdk_display_manager_get (),
1721 * gdk_display_has_pending:
1722 * @display: a #GdkDisplay
1724 * Returns whether the display has events that are waiting
1727 * Returns: %TRUE if there are events ready to be processed.
1732 gdk_display_has_pending (GdkDisplay *display)
1734 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1736 return GDK_DISPLAY_GET_CLASS (display)->has_pending (display);
1740 * gdk_display_supports_cursor_alpha:
1741 * @display: a #GdkDisplay
1743 * Returns %TRUE if cursors can use an 8bit alpha channel
1744 * on @display. Otherwise, cursors are restricted to bilevel
1745 * alpha (i.e. a mask).
1747 * Returns: whether cursors can have alpha channels.
1752 gdk_display_supports_cursor_alpha (GdkDisplay *display)
1754 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1756 return GDK_DISPLAY_GET_CLASS (display)->supports_cursor_alpha (display);
1760 * gdk_display_supports_cursor_color:
1761 * @display: a #GdkDisplay
1763 * Returns %TRUE if multicolored cursors are supported
1764 * on @display. Otherwise, cursors have only a forground
1765 * and a background color.
1767 * Returns: whether cursors can have multiple colors.
1772 gdk_display_supports_cursor_color (GdkDisplay *display)
1774 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1776 return GDK_DISPLAY_GET_CLASS (display)->supports_cursor_color (display);
1780 * gdk_display_get_default_cursor_size:
1781 * @display: a #GdkDisplay
1783 * Returns the default size to use for cursors on @display.
1785 * Returns: the default cursor size.
1790 gdk_display_get_default_cursor_size (GdkDisplay *display)
1792 guint width, height;
1794 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1796 GDK_DISPLAY_GET_CLASS (display)->get_default_cursor_size (display,
1800 return MIN (width, height);
1804 * gdk_display_get_maximal_cursor_size:
1805 * @display: a #GdkDisplay
1806 * @width: (out): the return location for the maximal cursor width
1807 * @height: (out): the return location for the maximal cursor height
1809 * Gets the maximal size to use for cursors on @display.
1814 gdk_display_get_maximal_cursor_size (GdkDisplay *display,
1818 g_return_if_fail (GDK_IS_DISPLAY (display));
1820 GDK_DISPLAY_GET_CLASS (display)->get_maximal_cursor_size (display,
1826 * gdk_display_warp_pointer:
1827 * @display: a #GdkDisplay
1828 * @screen: the screen of @display to warp the pointer to
1829 * @x: the x coordinate of the destination
1830 * @y: the y coordinate of the destination
1832 * Warps the pointer of @display to the point @x,@y on
1833 * the screen @screen, unless the pointer is confined
1834 * to a window by a grab, in which case it will be moved
1835 * as far as allowed by the grab. Warping the pointer
1836 * creates events as if the user had moved the mouse
1837 * instantaneously to the destination.
1839 * Note that the pointer should normally be under the
1840 * control of the user. This function was added to cover
1841 * some rare use cases like keyboard navigation support
1842 * for the color picker in the #GtkColorSelectionDialog.
1846 * Deprecated: 3.0: Use gdk_device_warp() instead.
1849 gdk_display_warp_pointer (GdkDisplay *display,
1854 g_return_if_fail (GDK_IS_DISPLAY (display));
1856 gdk_device_warp (display->core_pointer,
1862 _gdk_display_get_next_serial (GdkDisplay *display)
1864 return GDK_DISPLAY_GET_CLASS (display)->get_next_serial (display);
1869 * gdk_notify_startup_complete:
1871 * Indicates to the GUI environment that the application has finished
1872 * loading. If the applications opens windows, this function is
1873 * normally called after opening the application's initial set of
1876 * GTK+ will call this function automatically after opening the first
1877 * #GtkWindow unless gtk_window_set_auto_startup_notification() is called
1878 * to disable that feature.
1883 gdk_notify_startup_complete (void)
1885 gdk_notify_startup_complete_with_id (NULL);
1889 * gdk_notify_startup_complete_with_id:
1890 * @startup_id: a startup-notification identifier, for which
1891 * notification process should be completed
1893 * Indicates to the GUI environment that the application has
1894 * finished loading, using a given identifier.
1896 * GTK+ will call this function automatically for #GtkWindow
1897 * with custom startup-notification identifier unless
1898 * gtk_window_set_auto_startup_notification() is called to
1899 * disable that feature.
1904 gdk_notify_startup_complete_with_id (const gchar* startup_id)
1906 GdkDisplay *display;
1908 display = gdk_display_get_default ();
1910 gdk_display_notify_startup_complete (display, startup_id);
1914 * gdk_display_notify_startup_complete:
1915 * @display: a #GdkDisplay
1916 * @startup_id: a startup-notification identifier, for which
1917 * notification process should be completed
1919 * Indicates to the GUI environment that the application has
1920 * finished loading, using a given identifier.
1922 * GTK+ will call this function automatically for #GtkWindow
1923 * with custom startup-notification identifier unless
1924 * gtk_window_set_auto_startup_notification() is called to
1925 * disable that feature.
1930 gdk_display_notify_startup_complete (GdkDisplay *display,
1931 const gchar *startup_id)
1933 g_return_if_fail (GDK_IS_DISPLAY (display));
1935 GDK_DISPLAY_GET_CLASS (display)->notify_startup_complete (display, startup_id);
1939 _gdk_display_event_data_copy (GdkDisplay *display,
1940 const GdkEvent *event,
1941 GdkEvent *new_event)
1943 GDK_DISPLAY_GET_CLASS (display)->event_data_copy (display, event, new_event);
1947 _gdk_display_event_data_free (GdkDisplay *display,
1950 GDK_DISPLAY_GET_CLASS (display)->event_data_free (display, event);
1954 _gdk_display_create_window_impl (GdkDisplay *display,
1956 GdkWindow *real_parent,
1958 GdkEventMask event_mask,
1959 GdkWindowAttr *attributes,
1960 gint attributes_mask)
1962 GDK_DISPLAY_GET_CLASS (display)->create_window_impl (display,
1972 _gdk_display_create_window (GdkDisplay *display)
1974 return g_object_new (GDK_DISPLAY_GET_CLASS (display)->window_type, NULL);
1978 * gdk_keymap_get_for_display:
1979 * @display: the #GdkDisplay.
1981 * Returns the #GdkKeymap attached to @display.
1983 * Return value: (transfer none): the #GdkKeymap attached to @display.
1988 gdk_keymap_get_for_display (GdkDisplay *display)
1990 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
1992 return GDK_DISPLAY_GET_CLASS (display)->get_keymap (display);
1995 typedef struct _GdkGlobalErrorTrap GdkGlobalErrorTrap;
1997 struct _GdkGlobalErrorTrap
2002 static GQueue gdk_error_traps = G_QUEUE_INIT;
2005 * gdk_error_trap_push:
2007 * This function allows X errors to be trapped instead of the normal
2008 * behavior of exiting the application. It should only be used if it
2009 * is not possible to avoid the X error in any other way. Errors are
2010 * ignored on all #GdkDisplay currently known to the
2011 * #GdkDisplayManager. If you don't care which error happens and just
2012 * want to ignore everything, pop with gdk_error_trap_pop_ignored().
2013 * If you need the error code, use gdk_error_trap_pop() which may have
2014 * to block and wait for the error to arrive from the X server.
2016 * This API exists on all platforms but only does anything on X.
2018 * You can use gdk_x11_display_error_trap_push() to ignore errors
2019 * on only a single display.
2022 * <title>Trapping an X error</title>
2024 * gdk_error_trap_push (<!-- -->);
2026 * // ... Call the X function which may cause an error here ...
2029 * if (gdk_error_trap_pop (<!-- -->))
2031 * // ... Handle the error here ...
2037 gdk_error_trap_push (void)
2039 GdkDisplayManager *manager;
2040 GdkDisplayClass *class;
2041 GdkGlobalErrorTrap *trap;
2044 manager = gdk_display_manager_get ();
2045 class = GDK_DISPLAY_GET_CLASS (gdk_display_manager_get_default_display (manager));
2047 if (class->push_error_trap == NULL)
2050 trap = g_slice_new (GdkGlobalErrorTrap);
2051 trap->displays = gdk_display_manager_list_displays (manager);
2053 g_slist_foreach (trap->displays, (GFunc) g_object_ref, NULL);
2054 for (l = trap->displays; l != NULL; l = l->next)
2056 class->push_error_trap (l->data);
2059 g_queue_push_head (&gdk_error_traps, trap);
2063 gdk_error_trap_pop_internal (gboolean need_code)
2065 GdkDisplayManager *manager;
2066 GdkDisplayClass *class;
2067 GdkGlobalErrorTrap *trap;
2071 manager = gdk_display_manager_get ();
2072 class = GDK_DISPLAY_GET_CLASS (gdk_display_manager_get_default_display (manager));
2074 if (class->pop_error_trap == NULL)
2077 trap = g_queue_pop_head (&gdk_error_traps);
2079 g_return_val_if_fail (trap != NULL, 0);
2082 for (l = trap->displays; l != NULL; l = l->next)
2086 code = class->pop_error_trap (l->data, !need_code);
2088 /* we use the error on the last display listed, why not. */
2093 g_slist_free_full (trap->displays, g_object_unref);
2094 g_slice_free (GdkGlobalErrorTrap, trap);
2100 * gdk_error_trap_pop_ignored:
2102 * Removes an error trap pushed with gdk_error_trap_push(), but
2103 * without bothering to wait and see whether an error occurred. If an
2104 * error arrives later asynchronously that was triggered while the
2105 * trap was pushed, that error will be ignored.
2110 gdk_error_trap_pop_ignored (void)
2112 gdk_error_trap_pop_internal (FALSE);
2116 * gdk_error_trap_pop:
2118 * Removes an error trap pushed with gdk_error_trap_push().
2119 * May block until an error has been definitively received
2120 * or not received from the X server. gdk_error_trap_pop_ignored()
2121 * is preferred if you don't need to know whether an error
2122 * occurred, because it never has to block. If you don't
2123 * need the return value of gdk_error_trap_pop(), use
2124 * gdk_error_trap_pop_ignored().
2126 * Prior to GDK 3.0, this function would not automatically
2127 * sync for you, so you had to gdk_flush() if your last
2128 * call to Xlib was not a blocking round trip.
2130 * Return value: X error code or 0 on success
2133 gdk_error_trap_pop (void)
2135 return gdk_error_trap_pop_internal (TRUE);