Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!yale!mintaka!bloom-beacon!vaxeline!bootsie!olson
From: olson@bootsie.uucp (Eric K. Olson)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Is this possible with the Resource Manager?
Message-ID: <1991Feb17.041728.11518@bootsie.uucp>
Date: 17 Feb 91 04:17:28 GMT
References: <1CE00001.ed5n0r@tbomb.ice.com>
Organization: Lexington Software Design, Lexington, MA
Lines: 40

In article <1CE00001.ed5n0r@tbomb.ice.com> time@ice.com writes:
>How about:
>	SetResLoad(FALSE);
>	resHand = GetResource(type, id);
>	SetResLoad(TRUE);
>	if (*resHand!=NULL) {		/* The resource was loaded */
>		DetatchResource(resHand);
>		onDiskHand = GetResource(type, id);
>		DetachResource(onDiskHand);
>		/* Now move that resource back into place... */
>		onDiskHand2 = GetResource(type, id);
>		SizeResource(onDiskHand2, GetHandleSize(resHand));
>		BlockMove(*resHand, *onDiskHand2, GetHandleSize(resHand));
>		ChangedResource(resHand);
>		}
>
>sound right?

At first I thought this was a really good solution, but it doesn't do
quite what my theoretical ReattachHandle() would.  I don't understand
the call to ChangedResource(resHand): wouldn't that just fail (it's no
longer a Resource Handle)? If you meant ChangedResource(onDiskHand2), it
doesn't reattach resHand.  Any other old reference to the resource via
resHand remains detached.  New references via GetResource() return a
different Handle (onDiskHand2).  Calls to LoadResource() with the old
Handle will fail.  Please correct me if I'm wrong. 

My purpose for this is editting (or just copying) the currently running
application's MENU resources.  I don't need the changes to take effect
until the next run (for editting).  I _do_ need the resource as it
appears on disk, even though it is in memory and not purgable (and
modified from the data on the disk by the TCL). 


-Eric
-- 
Eric K. Olson, Editor, Prepare()      NOTE:     olson@bootsie.uucp doesn't work
Lexington Software Design             Internet: olson@endor.harvard.edu
72A Lowell St., Lexington, MA  02173  Uucp:     harvard!endor!olson
(617) 863-9624                        Bitnet:   OLSON@HARVARD