[maemo-developers] Missing button_release_event messages?

From: Chris Lord chris at openedhand.com
Date: Thu Nov 8 13:20:04 EET 2007
It could be that the motion hint is set on the widget - this stops
motion events being reported until the app has had time to handle them
so you don't get a back-log of events... I might (in fact, probably) be
remembering incorrectly, but previous hildon gtk had a patch so it was
set by default I think?

Either way, something to check out - Have a look at
gtk_widget_add_events, GdkEventMask and GDK_POINTER_MOTION_HINT_MASK.
I've not tried python, but I certainly didn't have this problem in C.


On Wed, 2007-11-07 at 22:32 -0800, George Nachman wrote:
> I've written an app in PyMaemo that is very sensitive to getting
> OnButtonUp events on time and I noticed that if I touch the screen
> with my finger, move it, and let it up all very quickly that I don't
> get the button_release_event message. I do get a button_press_event
> and maybe a motion_notify_event, but GTK never tells me I released the
> button. If I then tap on the screen I immediately get a
> button_release_event, motion_notify_event, and button_press_event in
> very quick succession.
> My program runs in a full-screen window, so I don't believe something
> else could be getting my button_release_event--and besides, I do get
> it when I tap on the screen later on, anyway.
> Has anyone ever heard of this? Could I just be doing something silly?
> Thanks,
> George
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