[comp.sys.mac.programmer] Off-screen bitmaps?

rmiller@sbcs.sunysb.edu (Robert Miller) (08/19/90)

I'm developing an application which uses graphics.  I'm considering
using an off-screen bitmap to store my graphics to make scrolling
and updating easier.  Although this method is mentioned in IM and
Macintosh Revealed, I haven't seen how this would be done.  Is it
as easy as declaring an object of type GrafPort and then opening it
with OpenPort?  What code would I need to call so that I can draw
off-screen as if I were drawing in a window?

Robert
rmiller@sbcs.sunysb.edu