Path: utzoo!attcan!uunet!ginosko!brutus.cs.uiuc.edu!usc!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU (Bob Scheifler)
Newsgroups: comp.windows.x
Subject: Re: backing store
Message-ID: <8909132212.AA01424@expire.lcs.mit.edu>
Date: 13 Sep 89 22:12:55 GMT
References: <1989Sep13.193303.15857@odi.com>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 20


    Setting backing store
    to WhenMapped in my application's windows results in strange behavior,
    including displaying pieces of other windows.

Sounds like your server is not working properly.  If you can reliably
reproduce the problems, submit a detailed bug report.  I don't believe we've
seen any other reports like this.

    First request: would someone who understands backing store in X
    please give the rest of us an explanation of what it does, how it
    works, and how to use it?

Sounds like you already understand this.

    Second request: would people who have been using -wm please comment on
    their experience.  Is using -wm the norm?  What are the drawbacks?

On a color display, it can bloat your server size dramatically.  I used to
use -wm, but I don't any more.  My server is fast enough ... :-)