[comp.sys.mac.programmer] Question on Text Scrolling

chris@boa.cis.ohio-state.edu (Chris Krieg) (11/13/90)

I am trying to speed up scrolling of text and I need some advice on how to
make it faster.  First I tried calling ScrollRect, but then I found that 
calling CopyBits with the same bitmap for both src & dst, and changing the
src & dst rects was faster.  I went on to try StdBits but it seem to be
no better than CopyBits.  Is there any other way to do it faster?  Instead 
of moving the bits around could I simply move pointers for a few lines and
then do a CopyBits.  The bitmap would have to be larger to handle the few
extra lines of text, but it seems like it would be faster. If this subject
is old and worn out could someone lead me to sources that address this issue.

Thank You.

--

Chris Krieg (chris@cis.ohio-state.edu)
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