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From: bjaspan@athena.mit.edu (Barr3y Jaspan)
Newsgroups: comp.windows.x
Subject: Re: Can 2 Unix Processes Write into the Same Window?
Message-ID: <1991Jan19.193317.24112@athena.mit.edu>
Date: 19 Jan 91 19:33:17 GMT
References: <276@silogic.UUCP>
Sender: news@athena.mit.edu (News system)
Reply-To: bjaspan@athena.mit.edu (Barr3y Jaspan)
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Organization: Massachusetts Institute of Technology
Lines: 16

In article <276@silogic.UUCP>, markd@silogic.UUCP (Mark DiVecchio) writes:
|> I'm looking at a programming problem that could be solved if I
|> can have 2 separate Unix processes draw into the same window.

Yes.  Any program that can open a connection to a display has free run of all
windows on that display.  Any number of clients can select on events, send
drawing requests, etc., to any window *assuming that the client can get the
appropriate window id*.  So if your two clients agree on the name of the
window, then one of them can create it and the other could search the entire
window tree until it found it.

(Note that there are actually some restrictions on multiple clients selecting
on certain events for a window; the O'Reily books talk about it.

-- 
Barr3y Jaspan, bjaspan@mit.edu