Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU (Bob Scheifler)
Newsgroups: comp.windows.x
Subject: Re: Exposing one's windows
Message-ID: <8902172031.AA00273@EXPIRE.LCS.MIT.EDU>
Date: 17 Feb 89 20:31:50 GMT
References: <8902171942.AA04986@sparky>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 12


    I want to create a backing-store :always window.
    Am I guaranteed that I will get an exposure event on this
    window when it is created?

No.  A server is free to ignore backing-store requests.

    If I wait for the exposure at creation time and don't get it,
    make-window-stream will never return.

Right.  You'll have to force a round-trip and then check for a locally
queued event.