Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!think!husc6!endor!siegel
From: siegel@endor.harvard.edu (Rich Siegel)
Newsgroups: comp.sys.mac.programmer
Subject: Re: THINK Pascal vs. PBGetFCBInfo on System file
Message-ID: <1987@husc6.harvard.edu>
Date: 28 Feb 90 18:24:47 GMT
References: <4107@hub.UUCP>
Sender: news@husc6.harvard.edu
Reply-To: siegel@endor.UUCP (Rich Siegel)
Organization: Symantec Language Products Group
Lines: 33

In article <4107@hub.UUCP> 6600pete@ucbsuxa.ucsb.edu (GurgleKat [Pete Gontier]) writes:
>I'm in the process of writing a ShutDown proc that needs to know where the
>Blessed Folder is, and apparently the working directories are all gone at
>volume unmount time. That's by way of introduction; I imagine someone will
>have an explanation for it. What I did to solve the perceived problem was
>to use PBGetFCBInfo on the System file, the 'real' refNum of which I got
>by playing games with UseResFile and CurResFile. So now I know where the
>Blessed Folder is without SysEnvRec.sysVRefNum and PBGetWDInfo. Nice. But
>when I try to call PBGetFCBInfo while in the THINK Pascal environment,
>everything hangs about 75% of the time. The ShutDown proc itself hasn't
>hung yet. THINK Pascal tries to give me a thumbs down on the offending
>call, but after it puts up the hand, it's hung.

	I would suggest that you use the approach given in Technical Note
#67 ("Finding the blessed Folder"), which describes how to find the dirID
of the system folder using a PBHGetVInfo. I suspect it's considerably safer
than screwing around with the resource map ordering.

R.



~~~~~~~~~~~~~~~
 Rich Siegel
 Staff Software Developer
 Symantec Corporation, Language Products Group
 Internet: siegel@endor.harvard.edu
 UUCP: ..harvard!endor!siegel

"When someone who makes four hundred and fifty dollars an hour wants to
tell you something for free, it's a good idea to listen."

~~~~~~~~~~~~~~~