Re: Capturing global key press events

[Vikram Noel Ambrose <noel ambrose gmail com>]

Vikram Noel Ambrose wrote:
> Lex Trotman wrote:
> > On 2 March 2010 15:29, Vikram Noel Ambrose <noel ambrose gmail com 
> > <mailto:noel ambrose gmail com>> wrote:
> >
> >     I'd like to capture global key press events to enable a "Global
> >     Shortcuts" feature in my application.
> >
> >     I've looked at a few other projects that have such capabilities
> >     and they all seem to hook straight into xlib. Is there a more GTK
> >     way of doing it?
> >
> >     At the moment I'm using,
> >     XKeysymToKeycode($DISPLAY,XStringToKeysym("some key in here"));
> >
> >     And then passing the resulting key code to XGrabKey,
> >     
> > XGrabKey($DISPLAY,key,Mod4Mask|ShiftMask,$WINDOW,True,GrabModeAsync,GrabModeAsync); 
> >
> >
> >     Then I call XSync($DISPLAY,0); I dont know why, but if I dont, gtk
> >     segfaults.
> >     I then wait for events with XNextEvent($DISPLAY,&event); inside a
> >     pthread and when an event comes by, i call a signal callback
> >     surrounded with gdk_threads_enter and _leave.
> >
> >     Now all this worked nicely for a while, but somehow I've managed
> >     to break it :(
> >
> >  
Figured it out!
I don't know what caused it, but for some reason the Super key on my 
keyboard suddenly no longer responds to the Mod4Mask modifier. After 
dumping the key states with AnyModifier I found it to actually be 0x50 
which is apparently Mod4Mask|Mod2Mask.