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From: lsr@Apple.COM (Larry Rosenstein)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Need help creating a Quickdraw picture
Message-ID: <8496@goofy.Apple.COM>
Date: 1 Jun 90 23:24:20 GMT
Sender: usenet@Apple.COM
Organization: Future Stuff,  Apple Computer, Inc.
Lines: 16
References:<2205@dftsrv.gsfc.nasa.gov> <7358@jarthur.Claremont.EDU> <1990Jun1.173103.11808@santra.uucp> <7366@jarthur.Claremont.EDU>

In article <7366@jarthur.Claremont.EDU> mwilkins@jarthur.Claremont.EDU 
(Mark Wilkins) writes:
> Every time I've done it copying from a bitmap to itself, it's given me an
> empty picture definition.

Perhaps QuickDraw only records operations that involve the current 
grafPort's portBits.  If you copy from one offscreen bitmap to another 
then the operation wouldn't involve the portBits.  You might try 
installing your offscreen bitmap into a grafPort and use that port for 
creating the picture.

Larry Rosenstein, Apple Computer, Inc.
Object Specialist

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