Path: utzoo!attcan!uunet!husc6!bloom-beacon!EXPO.LCS.MIT.EDU!jim
From: jim@EXPO.LCS.MIT.EDU (Jim Fulton)
Newsgroups: comp.windows.x
Subject: Re: (none) [really: advice on backing store]
Message-ID: <8811181515.AA21234@EXPO.LCS.MIT.EDU>
Date: 18 Nov 88 15:15:07 GMT
References: <1985@daisy.UUCP>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: X Consortium, MIT Laboratory for Computer Science
Lines: 8


> You can also turn on backing store for the drawing window.  Then you
> don't need to worry about exposure.  This uses somewhat more memory, but
> makes your program much simpler.

Nope.  Backing store is only a hint.  Your program still has to understand how
to handle exposures (otherwise it won't be portable since servers are free to
not provide backing store or to throw the bits away at any time).