Path: utzoo!attcan!uunet!lll-winken!ames!ncar!tank!nucsrl!accuvax.nwu.edu!bob
From: bob@accuvax.nwu.edu (Bob Hablutzel)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Vol # of Launched APPL?
Message-ID: <10050071@accuvax.nwu.edu>
Date: 26 Jan 89 14:02:29 GMT
References: <QXrTZSy00WB3E3pUk8@andrew.cmu.edu>
Organization: Northwestern U, Evanston IL, USA
Lines: 30

> Greetings...

> The situation:  An application, a configuration file, and a preferences
> file.  The application and the configuration file are in Folder A, the
> pref file in Folder B.  Double click the config file, the appl launches
> without difficulty.  Double click the pref file, and the default dir is
> Folder B, so although the appl is launched, it can't find the config
> file.  Sort of a fox, goat, cabbage problem.

> The question:  How do you determine the directory that the application
> resides in, _regardless of the location of the document that launched it_???

> I've pondered this one for a while.  It seems like a worthwhile thing
> to know, so if I figure it out first, I'll post the answer myself.
 
I haven't tried this, but it should work:

	At program startup, get the CurResFile. This gives you a refNum to
	the current application.

	Call _GetFCBInfo (see Inside Macintosh, Page 179) with ioRefNum
	set to the CurResFile refNum, and ioFCBIndx set to zero. This
	will return in ioVRefNum a vRefNum (probably actually a WDRefNum)
	for the disk (folder) holding the application.

Good luck.

> -Greg

Bob Hablutzel	Wildwood Software	BOB@NUACC.ACNS.NWU.EDU