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From: spanki@color.ced.berkeley.edu (Frank Goodman)
Newsgroups: comp.windows.x
Subject: Synchronous vs Asynchrounous
Message-ID: <1990Feb1.200702.25274@agate.berkeley.edu>
Date: 1 Feb 90 20:07:02 GMT
Sender: usenet@agate.berkeley.edu (USENET Administrator;;;;ZU44)
Reply-To: spanki@color.ced.berkeley.edu (Frank Goodman)
Organization: UC Berkeley Center of Environmental Design Research
Lines: 23

I read the article about synchronous vs asynchronous, and I have a few
question. I have a popup shell with a label as a child, and I want to
use it for messages to the user. I pop it up in a callback, with a message
like "Loading image, please be patient". However, since it is being poped up
in a callback, and I then go off into a long process of loading an image, my
label widget is never getting the text displayed. I believe, this is because
the expose event is sitting in the Q while I load my image, and not getting
processed while the popup is mapped. I call XFlush right after XtPopup,
but that doesn't do it. How can I ge the text to display? I'm going to want
to use this sort of message system throughout the program, I imagine, I will
need to reset the string (via XtSetValues), as well as move the popup
around. These messages are context specific, and therefore the moving, and
labeling routines will be called from callback routines. How can I get my
text to show?

Thanks,
Frank
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Frank  Goodman				arpa:  spanki@CED.Berkeley.EDU
University of California, Berkeley	  or:  spanki%CED@jade.Berkeley.EDU
College of Environmental Design		uucp:  ...hplabs!ucbvax!ced!spanki 
S.I.S Research Laboratory	 	phone: Novelty item, not necessary
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