Path: utzoo!attcan!uunet!amdahl!ames!pasteur!ucbvax!hoptoad!tim
From: tim@hoptoad.uucp (Tim Maroney)
Newsgroups: comp.sys.mac.programmer
Subject: Re: List Manager Problem
Message-ID: <6730@hoptoad.uucp>
Date: 10 Mar 89 20:27:44 GMT
References: <11032@ut-emx.UUCP> <6704@hoptoad.uucp> <11103@ut-emx.UUCP>
Reply-To: tim@hoptoad.UUCP (Tim Maroney)
Organization: Eclectic Software, San Francisco
Lines: 21

In article <11103@ut-emx.UUCP> newman@emx.UUCP (David Newman) writes:
>Tim Maroney suggested that I post my list initialization code
>and my filter proc to see if they were the problem.  Here they
>are.  Tim, I'll try your suggestion tonight.

I think I've found the problem.  I have never been able to get the List
Manager to work with a rectangle of (0, 0, 1, 0) even though it's
recommended in the documentation.  There always needs to be at least one
cell.  I have tried over and over to get it to work with no cells at
the beginning, but it always crashes.  This would seem to be your problem:

>SetRect(dataBounds, 0, 0, 1, 0);             (* Specify initial 1x0 list*)
>
>   (* Create an empty item list, 0 rows by 1 column *)
>   ItemList := LNew(itemRect,dataBounds,cellSize,0,theWindow,notDrawn,
>                    noGrow,noHScroll,vScroll);

Try it with a "SetRect(dataBounds, 0, 0, 1, 1);" and see if it works.
-- 
Tim Maroney, Consultant, Eclectic Software, sun!hoptoad!tim
"Jesus died for somebody's sins, but not mine." -- Patti Smith