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From: nick@cs.edinburgh.ac.uk (Nick Rothwell)
Newsgroups: comp.sys.mac.programmer
Subject: Re: THINK C Help with Resources
Keywords: AddResource
Message-ID: <522@skye.cs.ed.ac.uk>
Date: 5 Oct 90 10:51:31 GMT
References: < <30543@netnews.upenn.edu>
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Reply-To: nick@lfcs.ed.ac.uk
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In article <30543@netnews.upenn.edu>, gilbert@grad1.cis.upenn.edu (Michael Gilbert) writes:
> I want to store this thing as a resource in a file.  So, I first call
> CreateResFile (myFileName); (with appropriate error-checks), and
> then UseResFile (myFileName) to make use of the file.  Finally, I use
> 
> 	AddResource ((Handle) myThingHandle ...)
> 
> 	to add the resource.  Now, using ResEdit, I can see that the
> resource was indeed added correctly to this file.  However, after
> saving this data to the file and closing it, the data in my object is 
> corrupted.

I don't have my copy of Inside Mac to hand, and I haven't actually
written applications which create resources, so this is a rough guess,
but it's possible the handle is getting purged and/or moved as soon
as you flush it to the file. In all my Mac programming, I always wrap
calls to H{Un}Lock and H{No}Purge around anything I'm not certain about.

Just an idea...


Nick Rothwell,	Laboratory for Foundations of Computer Science, Edinburgh.
		nick@lfcs.ed.ac.uk    <Atlantic Ocean>!mcsun!ukc!lfcs!nick
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 "Now remember - and this is most important - you must think in Russian."