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From: urlichs@smurf.ira.uka.de
Newsgroups: comp.sys.mac.programmer
Subject: Re: GetResource failure during ShutDown procedure
Keywords: ShutDown, GetResource
Message-ID: <1348@smurf.ira.uka.de>
Date: 30 Dec 89 13:43:56 GMT
References: <5817@sdcc6.ucsd.edu>
Reply-To: urlichs@smurf.ira.uka.de (Matthias Urlichs)
Organization: University of Karlsruhe, FRG
Lines: 21

In comp.sys.mac.programmer ma199at@sdcc6.ucsd.edu (L J Cris) writes:
< Is there something special to loading resources during a shutdown proc?
< I was trying to load a 'snd ' resource during a routine installed by
< ShutDwnInstall and I always got a ResErr of -204, resProblem.
< 
Your problem is that you installed your shutdown proc with
sdOnRestart/sdOnShutdown.
At that point, all volumes are unmounted and there isn't any hard disk you can
get your resource from.

< Is there a way to get around this?
< 
Use a procedure installed w/ sdOnUnmount to read the resource, store its
handle somewhere convenient, then use that later.

General Hint #1243: If you want to put up a dialog box allowing to _cancel_
the shutdown, you'll have to patch _Shutdown. (Jump to the original code to
continue, return to abort.) Calling _ExitToShell from within the shutdown
procedure (the way TOPS does) crashes your Mac.
-- 
Matthias Urlichs