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From: blob@apple.com (Brian Bechtel)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Repeat SetVol query
Message-ID: <4967@internal.Apple.COM>
Date: 31 Oct 89 00:09:11 GMT
References: <3260@carthage.cs.swarthmore.edu>
Sender: usenet@Apple.COM
Organization: Apple Computer, Inc.
Lines: 16

In article <3260@carthage.cs.swarthmore.edu> jackiw@cs.swarthmore.edu 
(Nick Jackiw) writes:
> You can't SetVol(...) to the working directory returned by SFGetFile
> under HFS.  Even if you GetWDInfo and translate the wdRef into a volRef+
> DirID, you can SetVol(...) to the volume (root directory) but not to
> the DirID.
> 
> So how can you set the current default directory used by "Create", 
> "Open", and "OpenResFile" knowing only the SFReply.vRefnum?

You use PBGetWDInfo (Inside Macintosh, page IV-159) to get the volume name 
(in ioNamePtr) and DirID (in ioWDDirID).  To get the ioVRefNum given the 
name of the volume, the DirID, and the name of the file, use PBOpenWD 
(Inside Macintosh, page IV-158).

--Brian Bechtel     blob@apple.com     "My opinion, not Apple's"