Path: utzoo!attcan!uunet!digibd!merlyn
From: merlyn@digibd.com (Brian Westley (Merlyn LeRoy))
Newsgroups: comp.sys.mac.programmer
Subject: Re: popup hiermenu in cdev bombs later...
Message-ID: <1990Nov5.152003.28647@digibd.com>
Date: 5 Nov 90 15:20:03 GMT
References: <125369@linus.mitre.org>
Organization: DigiBoard Incorporated, St. Louis Park, MN
Lines: 21

[ following up my own article.. ]
[ heir popup menu in cdev corrupts the menu structure ]

resnick@cogsci.uiuc.edu (Pete Resnick) writes:
> 1. Set the "System Heap" attribute on the menu if you are reading it
> in from a resouce. I happen to have also check "Preload", but that
> depends on what you do.
> 2. Lock the MenuHandle before calling PopUpMenuSelect. I don't know
> why this should help in the least. PopUpMenuSelect should know enough
> to not move memory while the handle is unlocked, but I have found
> circumstantial evidence to the contrary.

I have tried all combinations of system heap/locked/preload, with no
success.  I looked at moire, which also uses a popup heir menu in a cdev,
and noticed that it *didn't use menu resources*.  It used strings which
were made into menus with NewMenu().  I changed to this method, and the
crashes stopped.  ZoomBar 1.7 is on AppleLink and I will be submitting
it to comp.binaries.mac today.  Thanks to everyone.

---
Merlyn LeRoy