Path: utzoo!attcan!uunet!cs.utexas.edu!usc!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU (Bob Scheifler)
Newsgroups: comp.windows.x
Subject: Re: XUngrabPointer isn't
Message-ID: <8908252000.AA05788@expire.lcs.mit.edu>
Date: 25 Aug 89 20:00:51 GMT
References: <2270001@hp-ptp.HP.COM>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 9


	returnval = XUngrabPointer(display,CurrentTime);

Look at the documentation again, XUngrabPointer doesn't return a value.
Also, as your program is written, the XUngrabPointer won't be executed
because it's an asynchronous request, which gets buffered internally by
Xlib, and your program never causes the buffer output to be flushed.
Both of these errors are among the tops in "common mistakes" people make
when programming to Xlib.