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From: trummel@island.COM (Keith Trummel)
Newsgroups: comp.windows.x
Subject: shared memory extension (MIT-SHM)
Message-ID: <4186@island.COM>
Date: 14 Jun 91 22:11:43 GMT
Sender: usenet@island.COM
Lines: 26


I am using the shared memory extension to X (MIT-SHM) which allows the client
and server to use XImages and Pixmaps in shared memory.  I want my program
to take advantage of this extension if it exists, but work properly in 
environments where it is not supported.  I use the function XShmQueryVersion 
to see if the server supports it, but I have the following problem.  If the
server supports this extension, but my client is running on a different
machine than the server I obviously can't take advantage of it.  So my 
question is how do I reliably tell if my client and the server are running 
on the same machine?

By the way, is it a bug that XShmQueryVersion says it supports the shared 
memory extension when you are running across the network?  i.e should 
XShmQueryVersion tell you if it can support shared memory for *some* client 
or for the client with the specified connection to the server?

				Keith Trummel
				Island Graphics Corporation
				San Rafael,  CA
				{sun,uunet}!island!trummel
				trummel@island.com
-- 
				Keith Trummel
				Island Graphics Corporation
				{sun,uunet}!island!trummel
				trummel@island.com