Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!osu-20.ircc.ohio-state.edu!talley-j
From: TALLEY-J@osu-20.ircc.ohio-state.edu (James T. Talley)
Newsgroups: comp.sys.mac.programmer
Subject: Smoothly dragging small pictures
Keywords: drag smooth copybits offscreen
Message-ID: <12492910881010@osu-20.ircc.ohio-state.edu>
Date: 10 May 89 16:09:05 GMT
Sender: news@tut.cis.ohio-state.edu
Organization: The Ohio State University, Columbus, Ohio
Lines: 10

Can anyone point me to information on dragging small pictures
(not grey outlines) on the screen?  The pictures that need to be
dragged are slightly larger than icons.  I wrote a routine that
uses an offscreen bitmap and copybits to save and restore the
existing screen image while I copybits the picture from place to
place.  The problem is that there is a terrible flicker.  Is
there a trick to getting rid of the flicker?  Is there a better
way that I haven't thought of yet?  Any help is appreciated.

James Talley
talley-j@osu-20.ircc.ohio-state.edu