On 18.09.2018 19:38, Michel Donais wrote:
> You are right, this is on GTK3. Hopefully, once GTK4 becomes predominant,
> it might not be useful to have foreign windows. But TBD!
>
> The problem is as follows:
>
>> if ((window != NULL) && (msg->hwnd != GetDesktopWindow ()))
>> gdk_window_destroy_notify (window);
>
> This line actually destroys the window, so GDK_WINDOW_DESTROYED becomes
> true at that point. This is due to:
>
>> static void gdk_win32_window_destroy_notify (GdkWindow *window)
>
> where
>
>> if (!GDK_WINDOW_DESTROYED (window)),
>
> it
>
>> _gdk_window_destroy (window, TRUE);
>
> So the line after, once the window is actually destroyed, it breaks
>
>> if (window == NULL || GDK_WINDOW_DESTROYED (window))
>> break;
>
> and never enters the following lines.
>
>> event = gdk_event_new (GDK_DESTROY);
>> event->any.window = window;
>>
>> _gdk_win32_append_event (event);
>
I see. I've looked at X11 backend, and it does things a bit differently - it
always queues a GDK_DESTROY event (due to how event processing is being done in
X11 - any notification results in an event, it seems), while also maybe calling
destory_notify() in the process.
If you rewrite WM_NCDESTROY handling to:
if ((pointer_grab != NULL && pointer_grab -> window == window) ||
(keyboard_grab && keyboard_grab -> window == window))
{
GdkDevice *device = gdk_device_manager_get_client_pointer (device_manager);
gdk_device_ungrab (device, msg -> time);
}
if (window != NULL)
{
event = gdk_event_new (GDK_DESTROY);
event->any.window = window;
_gdk_win32_append_event (event);
}
if ((window != NULL) && (msg->hwnd != GetDesktopWindow ()))
gdk_window_destroy_notify (window);
return_val = TRUE;
break;
then what happens in your application?
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