Path: utzoo!attcan!uunet!cs.utexas.edu!sun-barr!apple!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU
Newsgroups: comp.windows.x
Subject: Re: Multiple Applications usning the same window
Message-ID: <8905192238.AA02082@expire.lcs.mit.edu>
Date: 19 May 89 22:38:32 GMT
References: <8905192221.AA07168@SUN2.CE.YALE.EDU>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 13


    From our understanding of X11, the resources associated with a window are
    owned by a specific program, and while other programs can read the
    resources, many (or is it all?) resources can only be changed by its owning
    program (we are mainly concerned with geometry, colormap, and event
    handling).

Most resources can be freely manipulated in all ways by any client, not just
"read" by them.  This includes geometry, colormaps, and event handling.  There
are some restrictions, e.g. a writable colormap entry allocated by one client
cannot be freed by another, an event selection made by one client cannot be
unselected by another.  I suspect you'd have to be quite a bit more specific
about your requirements to know where the gotchas really are.