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From: gary@sun.mcs.clarkson.edu (Gary Levin)
Newsgroups: comp.sys.mac.programmer
Subject: GetVol and SetVol Query
Message-ID: 
Date: 2 Oct 89 20:50:10 GMT
Sender: news@sun.soe.clarkson.edu
Distribution: comp
Organization: Clarkson University, Potsdam NY
Lines: 21

Could someone explain the use and affect of GetVol and SetVol?  It
appears from the examples that I have found, that their prototypes are

    void GetVol(char* X, short *volNum);
    void SetVol(char* X, short  volNum);

(1) Are these the correct prototypes?
(2) What is the first parameter for?  All examples I have seen passed
    NULL. 
(3) It looks like SetVol can be used to change the ``default volume''.
    Is this the default volume as far as ``fopen'' is concerned?
(4) Is volNum the value one would get from CFile->volNum?

Thanks.



--
Gary Levin/Dept of Math & CS/Clarkson Univ/Potsdam, NY 13676/(315) 268-2384
BitNet: gary@clutx   Internet: gary@clutx.clarkson.edu