Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!husc6!cfa!cfa250!mvh
From: mvh@cfa250.harvard.edu (Mike VanHilst B-441 x57260)
Newsgroups: comp.windows.x
Subject: Getting window manager's decision
Keywords: window manager
Message-ID: <1519@cfa241.cfa250.harvard.edu>
Date: 1 May 89 00:33:17 GMT
Distribution: na
Organization: Harvard/Smithsonian Center for Astrophysics
Lines: 15

Is there any way to get the window manager's decision as regards an attempt
to place a window without actually mapping the window.  I have an image
processing application with several windows, not all of which are normally
mapped.  I need to know the size of the windows for allocating buffers and
computing their contents.  I would prefer not to do the computation at the
time the user requests the window as that slows the response (I am prepared
to recompute the contents in response to a ConfigureNotify).

My current method is to map all the windows and wait for the expose events
to learn what size they actually end up being.  Then those I don't want
initially mapped get unmapped.  The result is windows appearing, with some
disappearing and others remaining empty while their contents are computed.
Is there a more aesthetic approach to this problem?

Thanks, Mike VanHilst