Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!blkcat!f421.n109.z1.fidonet.org!Ken.Knight
From: Ken.Knight@f421.n109.z1.fidonet.org (Ken Knight)
Newsgroups: comp.sys.mac.programmer
Subject: System/App resource files
Message-ID: <3541.27C202A9@blkcat.fidonet.org>
Date: 20 Feb 91 01:58:33 GMT
Sender: ufgate@blkcat.fidonet.org (newsout1.26)
Organization: FidoNet node 1:109/421 - The Twilight Clone, Paul Heller
Lines: 29

I have an application that I am working on that opens up specified
resource forks. The user determines, via an SFGetFile, what file to
open and then work on. Now, normally, the sequence of events is:
 Get user input (file from SFGetFile());
 Do work on the resource file (we open it with an HOpenResFile() call
after
 determining the dirID of the file specified);
 Do a CloseResFile() when all done.
 
Normally, that works fine. However, if the user chooses to work on the
System file or application itself things go haywire. The problem is
that you DO NOT want to CloseResFile() though two particular resource
files. I want the application to check to see if the user has selelcted
the system/application and then only do an UpdateResFile() on them.
However, it appears that HOpenResFile() creates a NEW ference number
for already open files and so I can't just check to see if the
reference number returned matches either the system's refNum (held in
the system global SysMap) or matches the one for the application
(obtained via a call to CurResFile() at startup). What should I try
next?
 
  ** Ken **


--  

        Ken Knight, Ken.Knight@f421.n109.z1.fidonet.org
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