Path: utzoo!attcan!uunet!lll-winken!ames!mailrus!tut.cis.ohio-state.edu!ucbvax!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU (Bob Scheifler)
Newsgroups: comp.windows.x
Subject: Re: XGrabPointer and ButtonPress
Message-ID: <8902151332.AA03428@EXPIRE.LCS.MIT.EDU>
Date: 15 Feb 89 13:32:34 GMT
References: <19890214222542.2.MAC@titan.harris-atd.com>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 6

You're getting a BadAccess on ChangeActivePointerGrab because your
application is using two connections in conflict.  On one connection
you select for ButtonPress on the root window.  When the button gets
pressed, a grab is activated.  Subsequently you try to ChangeActivePointerGrab
on the *other* connection.  This is a no-no.  A "client" is defined by
a connection, not by an address space.