[comp.sys.mac.programmer] Graphic Image Scrolling

cl29+@andrew.cmu.edu (Cameron Christopher Long) (02/21/90)

I'm trying scroll a very large graphic image through a normal window. I have
been playing with various toolbox options, but not much is working well. If
anyone has any experience in this area, I would appreciate a push in the right
direction. Hints or pseudo-code would be great!

Thanks,
Cameron Long
cl29@andrew.cmu.edu

wayne@nih-csl.UUCP (wayne rasband) (02/23/90)

You might want to look at NIH Image for an example of how to scroll
large 8-bit images quickly. It uses CopyBits(not ScrollRect) to implement
scrolling. It is available, including Think Pascal source and example
images, via anonymous ftp from alw.nih.gov in the directory /pub/image.

Wayne Rasband(author of NIH Image)
wayne@helix.nih.gov