Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!samsung!munnari.oz.au!uniwa!vaxa.uwa.oz!c_leong
From: c_leong@vaxa.uwa.oz
Newsgroups: comp.sys.ibm.pc
Subject: Scrolling algorithms for windows watnted
Message-ID: <1990Jun6.195123.1871@vaxa.uwa.oz>
Date: 6 Jun 90 11:51:23 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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|----------------------------==> Clement Leong <==---------------------------|
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| ACSnet: C_Leong@vaxa.uwa.oz       Snailnet: Department of Medicine         |                            |
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