Path: utzoo!attcan!uunet!cs.utexas.edu!mailrus!purdue!bu-cs!bloom-beacon!EXPO.LCS.MIT.EDU!kit
From: kit@EXPO.LCS.MIT.EDU (Chris D. Peterson)
Newsgroups: comp.windows.x
Subject: Re: Window Creation Question
Message-ID: <8910161515.AA22379@expo.lcs.mit.edu>
Date: 16 Oct 89 15:15:13 GMT
References: <8910160634.AA13854@arisia.Xerox.COM>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
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> Also, if I want to do all my input via files, this would mean
> I don't need to handle any events.... event_mask = 0.

There is no way to write a proper X program that does not handle events.  You
must have a window visable on display, or all your drawing commands will be
tossed in the bit bucket.  The only way to make sure that this is true is to
wait for expose events.  Since the X model also requires the application to
repair any damage to the window caused by it being obscured, you must also be
prepared to redraw the contents of your window on any expose event. 

I would strongly suggest that you have a routine that repaints the contents
of the window whenever an expose event with count == 0 is received.  If you set
things up properly you should be able just set up your internal data structure,
create the windows, and the wait for expose events.

I hope this helps.

						Chris D. Peterson     
						MIT X Consortium 

Net:	 kit@expo.lcs.mit.edu
Phone:   (617) 253 - 9608	
Address: MIT - Room NE43-213