Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!ames!vsi1!teda!mikel
From: mikel@teda.UUCP (Mikel Lechner)
Newsgroups: comp.windows.x
Subject: Re: PC X servers / backing store
Message-ID: <21619@teda.UUCP>
Date: 4 Mar 91 05:13:19 GMT
References: <9103020232.AA05738@lightning.McRCIM.McGill.EDU> <951@boing.UUCP>
Lines: 22

dale@boing.UUCP (Dale Luck) writes:

>This is absolutely untrue. Backing store is a feature just like colors,
>visuals, shape extensions, pex and everything else. There is nothing
>wrong with a package requiring properly working backstore for that [. . .]

Very wrong.  Read the documentation.  It says very clearly that backing
store is an optional feature provided by X servers.  It is merely a hint
to the X server the backing store would be useful to the application.
X servers are not required to support it.  All applications should be
prepared to handle expose events in the event that backing store is not
available.

I can understand the desire for backing store in computationaly significant
graphics applications, but not designing an X application to handle the
situation without backing store is a design flaw IMHO.

-- 
Mikel Lechner			UUCP:  teda!mikel
Teradyne EDA, Inc.
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