Path: utzoo!mnetor!uunet!husc6!bbn!rochester!PT.CS.CMU.EDU!andrew.cmu.edu!rs4u+
From: rs4u+@andrew.cmu.edu (Richard Siegel)
Newsgroups: comp.sys.mac.programmer
Subject: GetIndString() and StringPtr
Message-ID: <oWJrSdy00XM319HWQQ@andrew.cmu.edu>
Date: 4 Apr 88 11:46:49 GMT
Organization: Carnegie Mellon University
Lines: 20


The argument to GetIndString isn't a StringPtr per se, rather, it's
the *address* of an Str255. If you're passing an unitialized StringPtr
to GetIndString, anything can (and will!) happen.

So consider:

Str255 s;
/* other stuff */

GetIndString(&s, foo, bar);

If the string couldn't be found, then the string will be of zero-length
-- NOT NULL! -- so its first byte will be zero:

	if (!s[0]) {/* string is of nonzero length*/}

Hope this works OK for you...

	-R.