Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!agate!helios.ee.lbl.gov!ucsd!cogsci!carrier
From: carrier@cogsci.ucsd.EDU (Mark Carrier)
Newsgroups: comp.sys.mac.programmer
Subject: Offscreen pixmaps larger than screen
Summary: How to draw into them?
Message-ID: <740@cogsci.ucsd.EDU>
Date: 3 May 89 01:05:22 GMT
Reply-To: carrier@cogsci.UUCP (Mark Carrier)
Followup-To: carrier@cogsci.UUCP (Mark Carrier)
Organization: U.C. San Diego, Institute for Cognitive Science
Lines: 15

I've created an offscreen pixmap that is taller than one screen.  I can't
figure out how to draw into the entire pixmap.  When I try and fill the
entire offscreen pixmap with a single color, the painting gets clipped
to the upper screenful of the offscreen image.  I know that the offscreen
pixmap is created for the right size, but just can't draw into any
point whose vertical coordinate is greater than 480 (Apple color monitor).
I've followed almost exactly the code per TechNote 120 with modifications
on the size of the offscreen pixmap.  When I SetPort to my new graphics
port, thePort^.portRect is a rectangle as large as the screen, not as large
as my offscreen pixmap bounds!  Is this normal? 

Any help or speculation would be appreciated.


				Mark Carrier