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From: chucks@sne42n.orl.mmc.COM
Newsgroups: comp.windows.x
Subject: bug in xman?
Message-ID: <9102181835.AA07630@seuss.orl.mmc.com>
Date: 18 Feb 91 18:35:18 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 27


 I am having a problem with xman going into a hard loop. I have traced the problem
 to the format routine in misc.c. the code where the problem is:

 while ( !XCheckTypedWindowEvent(XtDisplay(man_globals->standby),
                                  XtWindow(man_globals->standby),
                                  Expose, &event) );
  XtDispatchEvent( &event );
  XFlush(XtDisplay(man_globals->standby));

 If an expose event for the window never happens then the while loop is
stuck forever.
 This is exactly what I see happening.
 Question: 

 Why is it necessary to wait for the expose. If you are going to dispatch the
 expose and then flush the buffer, couldnt you just flush the buffer and generate
 your own expose. Or is there a much deeper reason for the method you used.

 thanks,


 X11R4-pl18, SUNos 4.1.1, sun cc


Malcolm Strickland         		    chucks@iplmail.orl.mmc.com
Martin Marietta Electronic Systems 	    407-356-5909