Hi,
I managed to get global key press and release events using
XGrabKey(display,keycode,0,rootwin,True, GrabModeAsync, GrabModeSyn);
It's a Qt application, which provides a function x11EventFilter(), where I
get the x11 events.
It looks like this:
bool App::x11EventFilter(XEvent *e)
{
if (e->type==KeyPress)
{
XAllowEvents(display, AsyncKeyboard, CurrentTime);
XSync(display,true);
XFlush(display);
//do some things depending on the pressed key...
}
if (e->type==KeyRelease)
{
XAllowEvents(display, AsyncKeyboard, CurrentTime);
XSync(display,true);
XFlush(display);
//do some things depending on the released key...
}
}
I get all (at least I didn't notice if I missed some) KeyPress events, but I
miss some KeyRelease events (I start some actions on KeyPress and stop them
at KeyRelease, sometimes they don't stop when releasing the key, then I have
to press and release it again).
Well, this is not nice, but not the real problem.
Sometimes (even depending on the box on which it runs, which should differ
*only* in the speed of the cpu) the keyboards "freezes", i.e. I don't get any
of these events anymore.
Any ideas what I do wrong or what is missing ?
Thanks
Alex
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