Path: utzoo!utgpu!watmath!att!tut.cis.ohio-state.edu!bloom-beacon!EXPO.LCS.MIT.EDU!jim From: jim@EXPO.LCS.MIT.EDU (Jim Fulton) Newsgroups: comp.windows.x Subject: Re: Determining validity of a windowID Message-ID: <8908142228.AA13122@expo.lcs.mit.edu> Date: 14 Aug 89 22:28:42 GMT References: <13488@bloom-beacon.MIT.EDU> Sender: daemon@bloom-beacon.MIT.EDU Organization: X Consortium, MIT Laboratory for Computer Science Lines: 6 Is there any way to determine whether a windowID is still valid (i.e. the window still exists) without generating a BadWindow error? Install an error handler that catches the BadWindow error on X_GetGeometry requests and returns 0. Then, test the result of XGetGeometry().