Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!att!emory!gatech!bloom-beacon!ANDREAS.WR.USGS.GOV!gjw
From: gjw@ANDREAS.WR.USGS.GOV (Gregory J. Woodhouse)
Newsgroups: comp.windows.x
Subject: using fork/exec
Message-ID: <9012080015.AA07568@andreas.wr.usgs.gov>
Date: 8 Dec 90 00:15:10 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 19

Fork, as you all know, returns the pid of the child to the parent process,
so it is possible to use kill to send messages back and forth between
a process and a child created by a fork/exec.  I've done this in non-X
programming, but would now like to do the same in an Xlib program.  I am
aware that it is necessary to do an XCloseDisplay in the child before 
exec'ing the new process, but then I would like to use XSenEvent to pass
messages between processes rather than try an use kill and a signal handler.
My question is: How should pass the window ID of the child to the parent.
My only idea is to pass the actual bytes of the window ID through a pipe,
but am not at all certain that will even work!  Surely, someone has done
this before.  Thanks in advance.  Those of you I have corresponded with are
helping more than you know.
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Gregory Woodhouse          |We know that the center of the earth
gjw@andreas.wr.usgs.gov    |is a fiery molten mass...but it's not
(415) 329-4694 (office)    |good to dwell on it.
(415) 325-7802 (home)      |
U.S. Geological Survey / 345 Middlefield Rd. MS 977 / Menlo Park, CA 94025
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