Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!psuvax1!husc6!husc7!byrd From: byrd@husc7.HARVARD.EDU (John "The Squid" Byrd) Newsgroups: comp.sys.cbm Subject: Re: Another Smooth-Scrolling ML question Message-ID: <3334@husc6.harvard.edu> Date: 4 Dec 89 18:30:25 GMT References: <3408@jarthur.Claremont.EDU> Sender: news@husc6.harvard.edu Reply-To: byrd@husc7.UUCP (John "The Squid" Byrd) Organization: Harvard University Science Center Cambridge, MA Lines: 18 In article <3408@jarthur.Claremont.EDU> kfink@jarthur.Claremont.EDU (Kevin Fink) writes: >I am still having problems getting smooth scrolling to work. I am using >double-buffering but it is still flickering. I think I know why. Are you sure? Maybe I'm missing something, but I didn't see the double- buffering portion of the program just typed in. Double buffering refers to maintaining two complete and separate screens in memory and swapping them occasionally. There was a long thread of articles explaining why smooth scrolling is tough to do without double buffering (the screen scroll must be completed in less than 1/60 of a second). ------------------------------------------------------------------------------- John Byrd ! byrd@husc7.harvard.edu ! "Uh, could you repeat the question?" Q-Link: John Byrd ! - Sid Vicious CompuServe: 74506,3612 ! -------------------------------------------------------------------------------