Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!uakari.primate.wisc.edu!polyslo!dorourke
From: dorourke@polyslo.CalPoly.EDU (David M. O'Rourke)
Newsgroups: comp.sys.mac.programmer
Subject: Re: HFS Help
Message-ID: <1989Sep21.014654.27408@polyslo.CalPoly.EDU>
Date: 21 Sep 89 01:46:54 GMT
References: <12562@orstcs.CS.ORST.EDU>
Reply-To: dorourke@polyslo.CalPoly.EDU (David M. O'Rourke)
Organization: Cal Poly State University -- San Luis Obispo
Lines: 23

borcelf@jacobs.cs.orst.edu (Fernando Borcel) writes:
>I have a question that IM doesn't seem to answer too clearly...  A vRefNum is
>a number assigned to the volume during runtime, or is it a number I can trust
>so when the next time I want to open a file in volume vRefNum I will be able

  Off the top of my head {ie. I could be wrong} I believe vRefNum's are good
for the life of the folder {or volume}, I would have to say that yes it
is.  But......

  System 7.0 is going to allow you to have unique file ID's that will be
a way to find and open a file, even if it's been moved to another directory.
So if your application isn't being released in the real near future you might
want to look into holding off on the vRefNum and using the file-id instead.

  I WELCOME corrections or this, I am currently without my Mac documentation
and I am going from memory.

  Hope this helps.
-- 
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David M. O'Rourke____________________|_____________dorourke@polyslo.calpoly.edu
|  God doesn't know, he would have never designed it like that in the first   |
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