Path: utzoo!attcan!uunet!lll-winken!ames!mailrus!tut.cis.ohio-state.edu!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU (Bob Scheifler)
Newsgroups: comp.windows.x
Subject: Re: How to make XClearRegion?
Message-ID: <8902031533.AA03123@EXPIRE.LCS.MIT.EDU>
Date: 3 Feb 89 15:33:53 GMT
References: <521@igor.Rational.COM>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
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    This doesn't seem like too unusal a thing to want, so I'm assuming I
    just missed the relevant section of TFM.  Can anyone give me a clue?

I don't think you've missed anything.  Seems like a plausible thing to
do, but there's no convenient way to do it.  The main bug is that Xlib
ought to (but doesn't) provide an interface for extracting an "external
representation" of a region, e.g. a list of rectangles.