Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!mcgill-vision!snorkelwacker!bloom-beacon!LARRY.MCRCIM.MCGILL.EDU!mouse
From: mouse@LARRY.MCRCIM.MCGILL.EDU (der Mouse)
Newsgroups: comp.windows.x
Subject: Re:  Window visibility question
Message-ID: <9005030731.AA21997@Larry.McRCIM.McGill.EDU>
Date: 3 May 90 07:31:14 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 19

> I'm looking for a way to calculate which portions of a window are
> visible and which are obscured.

> (3) By setting up for CreateWindow and MapWindow events I could be
>     notified of all windows which are created,

I don't really have any better solution, but I will note that I have a
program that (among other things) tracks the position-and-size of those
portions of the root window that are visible; this may be of some help,
as a starting point if nothing else.

If you want a copy, it's available for anonymous ftp from 132.206.1.1,
in X/xdrift.c.  (It probably won't build as-is; get
X/mterm.src/mterm.aux if you want help building it as it stands.)

					der Mouse

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