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From: c_leong@vaxa.uwa.oz
Newsgroups: comp.windows.ms
Subject: HELP: scrolling algorithms for windows
Message-ID: <1990Jun6.194751.1870@vaxa.uwa.oz>
Date: 6 Jun 90 11:47:51 GMT
Organization: University of Western Australia
Lines: 20


I've just implemented a scrolling routine that uses the BitBlt functions in
MS Windows SDK, however, when the screen is scrolled a noticable
flash occurs as the screen is repainted. What I would like to know is how
programs like Excel implement their scrolling stratergy where movements
left and right ( or for that matter up or down) do not inccur a noticeable flash
of the screen? Is there a way of implementing a duo screen buffer.. where one is
shown while the other is repainted?

                               Clem
   
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