Path: utzoo!attcan!uunet!wuarchive!zaphod.mps.ohio-state.edu!usc!apple!keith
From: keith@Apple.COM (Keith Rollin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Trouble with using Munger
Message-ID: <42915@apple.Apple.COM>
Date: 12 Jul 90 18:31:25 GMT
References: <477@psych.psy.uq.oz.au>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 37

In article <477@psych.psy.uq.oz.au> strasser@psych.psy.uq.oz.au (Michael Strasser) writes:
>I am having a problem using Munger in a macApp program I'm writing.  I
>am trying to use it as part of a simple text-parsing routine.  Here is
>an example of what I have now:
>
>Given:
>
>	VAR
>		aChar : Char;
>		text : Handle;
>		offset : LONGINT;
>		where : LONGINT;
>
>I have text set correctly (I've checked this), and offset set to 0.  
>I then try to find the first tab character in a string which I know 
>contains at least one tab using:
>
>	aChar := chTab;
>	where := Munger(text, offset, @aChar, 1, NIL, 0);
>
>but Munger returns -1, signifying that the string was not found.
>
>Am I doing anything wrong?  According to my reading of IM, it should be
>OK.  

You're passing a pointer to the length byte of "aChar", rather than the
first character of aChar. Try:

	where := Munger(text, offset @aChar[1], Length(aChar), NIL, 0);


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