Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!snorkelwacker!apple!bc
From: bc@Apple.COM (bill coderre)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: Checking for a named object sans error if nonexistant
Message-ID: <43714@apple.Apple.COM>
Date: 7 Aug 90 18:34:02 GMT
References: <5611@uwm.edu>
Distribution: usa
Organization: Apple Computer Inc, Cupertino, CA
Lines: 20

John Bowden:
|I have a stack that creates other stacks and I need to verify whether
|certain stacks were so created. 
There's an XFCN called "FileExists" in the Developer Stack 1.3.
It may be all you need. 

I'll summarize his second question:
"Is there a way to determine whether a certain (object) exists?"

Well, in HC 1.x, no. 

There should be a rather general gestalt tester in 2.0, so phrases
like:
	if there is a cd btn "foo" then ....
and
	if there is no menu "bar" then ....
will be available.


bill coderre, consultant to Apple