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Bug 558278 - Crash when calling a callback set by

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2008-11-01  Tor Lillqvist  <tml@novell.com>

	Bug 558278 - Crash when calling a callback set by
	gdk_add_client_message_filter()

	* gdk/win32/gdkevents-win32.c (apply_event_filters): Rename from
	apply_filters() so that it is clear that this function is for
	GdkEventFilters only.

	(print_event): Print more information for GDK_CLIENT_EVENT events.

	(gdk_event_translate): When handling client filters, don't use
	apply_event_filters(). Use similar code as in the X11 backend,
	although not exactly, as the parameter list and return value
	semantics of gdk_event_translate() is different.


svn path=/trunk/; revision=21748
This commit is contained in:
Tor Lillqvist
2008-11-01 11:55:16 +00:00
committed by Tor Lillqvist
parent 1ffab34fee
commit c2129d07ca
2 changed files with 53 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
gdk/win32/gdkevents-win32.c
View File

@ -1070,6 +1070,16 @@ print_event (GdkEvent *event)
event->configure.x, event->configure.y,
event->configure.width, event->configure.height);
break;
case GDK_CLIENT_EVENT:
g_print ("%s %d %ld %ld %ld %ld %ld",
gdk_atom_name (event->client.message_type),
event->client.data_format,
event->client.data.l[0],
event->client.data.l[1],
event->client.data.l[2],
event->client.data.l[3],
event->client.data.l[4]);
break;
case GDK_SCROLL:
g_print ("(%.4g,%.4g) (%.4g,%.4g) %s ",
event->scroll.x, event->scroll.y,
@ -1213,9 +1223,9 @@ fill_key_event_string (GdkEvent *event)
}
static GdkFilterReturn
apply_filters (GdkWindow *window,
MSG *msg,
GList *filters)
apply_event_filters (GdkWindow *window,
MSG *msg,
GList *filters)
{
GdkFilterReturn result = GDK_FILTER_CONTINUE;
GdkEvent *event;
@ -2276,7 +2286,7 @@ gdk_event_translate (MSG *msg,
{
/* Apply global filters */
GdkFilterReturn result = apply_filters (NULL, msg, _gdk_default_filters);
GdkFilterReturn result = apply_event_filters (NULL, msg, _gdk_default_filters);
/* If result is GDK_FILTER_CONTINUE, we continue as if nothing
* happened. If it is GDK_FILTER_REMOVE or GDK_FILTER_TRANSLATE,
@ -2335,7 +2345,7 @@ gdk_event_translate (MSG *msg,
{
/* Apply per-window filters */
GdkFilterReturn result = apply_filters (window, msg, ((GdkWindowObject *) window)->filters);
GdkFilterReturn result = apply_event_filters (window, msg, ((GdkWindowObject *) window)->filters);
if (result == GDK_FILTER_REMOVE || result == GDK_FILTER_TRANSLATE)
{
@ -2348,9 +2358,15 @@ gdk_event_translate (MSG *msg,
{
GList *tmp_list;
GdkFilterReturn result = GDK_FILTER_CONTINUE;
GList *node;
GDK_NOTE (EVENTS, g_print (" client_message"));
event = gdk_event_new (GDK_NOTHING);
((GdkEventPrivate *)event)->flags |= GDK_EVENT_PENDING;
node = _gdk_event_queue_append (_gdk_display, event);
tmp_list = client_filters;
while (tmp_list)
{
@ -2360,38 +2376,41 @@ gdk_event_translate (MSG *msg,
if (filter->type == GDK_POINTER_TO_ATOM (msg->wParam))
{
GList *filter_list = g_list_append (NULL, filter);
GDK_NOTE (EVENTS, g_print (" (match)"));
result = apply_filters (window, msg, filter_list);
g_list_free (filter_list);
result = (*filter->function) (msg, event, filter->data);
if (result != GDK_FILTER_CONTINUE)
break;
}
}
if (result == GDK_FILTER_REMOVE || result == GDK_FILTER_TRANSLATE)
switch (result)
{
case GDK_FILTER_REMOVE:
_gdk_event_queue_remove_link (_gdk_display, node);
g_list_free_1 (node);
gdk_event_free (event);
return_val = TRUE;
goto done;
}
else
{
case GDK_FILTER_TRANSLATE:
((GdkEventPrivate *)event)->flags &= ~GDK_EVENT_PENDING;
GDK_NOTE (EVENTS, print_event (event));
return_val = TRUE;
goto done;
case GDK_FILTER_CONTINUE:
/* Send unknown client messages on to Gtk for it to use */
event = gdk_event_new (GDK_CLIENT_EVENT);
event->client.type = GDK_CLIENT_EVENT;
event->client.window = window;
event->client.message_type = GDK_POINTER_TO_ATOM (msg->wParam);
event->client.data_format = 32;
event->client.data.l[0] = msg->lParam;
for (i = 1; i < 5; i++)
event->client.data.l[i] = 0;
append_event (event);
GDK_NOTE (EVENTS, print_event (event));
return_val = TRUE;
goto done;
}