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From: osborn@ux1.lbl.gov (James R Osborn)
Newsgroups: comp.sys.mac.programmer
Subject: Re: SAMPLE cdev in C
Keywords: cdev, getresource, packages in rom
Message-ID: <1855@helios.ee.lbl.gov>
Date: 7 Feb 89 08:33:36 GMT
References: <1845@helios.ee.lbl.gov> <3646@geaclib.UUCP>
Sender: usenet@helios.ee.lbl.gov
Reply-To: osborn@ux1.lbl.gov (James R Osborn)
Organization: Lawrence Berkeley Laboratory, Berkeley
Lines: 20


	Thank you very much Reid Ellis!

	You are exactly right.  Simply omitting the segment which attempts
to load the (now in ROM) resource caused it to function properly.  This does
however point out a bug in the logic of the example code as printed in
IM-V Ch.18.  The whole point was to check if there was sufficient memory.
When GetResource returned NULL (since the PACK is now in ROM), the cdev should
have gracefully aborted and informed the control panel that it had insufficient
memory.  This would have resulted in a grayed out panel and NOT a crash.

	Now since   comp.sys.mac.sources   does not exist WHERE SHOULD I POST
THIS SHORT SIMPLE CDEV WRITTEN IN C?


	Thanks again -- and thanks Tim Maroney for your $0.02 too!

James R. Osborn
osborn@ux1.lbl.gov
Lawrence Berkeley Laboratory