Path: utzoo!attcan!uunet!zaphod.mps.ohio-state.edu!usc!apple!jkc
From: jkc@Apple.COM (John Kevin Calhoun)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: problem with openStack handler
Message-ID: <47352@apple.Apple.COM>
Date: 13 Dec 90 19:21:56 GMT
References: <2450@ac.dal.ca>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 24


In article <2450@ac.dal.ca> ireland@ac.dal.ca writes:
>I just discovered that when I launch a stack from the finder its openstack
>handler is called twice, but only one when I open the stack from within
>HC. Is this the way its supposed to work or is something screwy?

This is not the way it works by itself.  When you start HyperCard 2.0,
either by opening a stack or the application itself, it sends each of
the following messages exactly once:

startUp
openStack
openBackground
openCard

If the stack you're opening contains a startUp handler that goes
to another stack and back, then your openCard handler will be
invoked twice.  You can eliminate the extra invocation by setting
lockMessages to true in your startUp handler -- be sure to set
lockMessages back to false as soon as possible.

Kevin Calhoun
HyperCard Team
Apple Computer, Inc.