Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!oberon!pollux.usc.edu!kurtzman
From: kurtzman@pollux.usc.edu (Stephen Kurtzman)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: Hypercard & LSC C 3.0
Message-ID: <12943@oberon.USC.EDU>
Date: 20 Oct 88 07:18:21 GMT
References: <gXL0Udt38k-0M=HVhr@andrew.cmu.edu>
Sender: news@oberon.USC.EDU
Reply-To: kurtzman@pollux.usc.edu (Stephen Kurtzman)
Organization: University of Southern California, Los Angeles, CA
Lines: 11

In article <gXL0Udt38k-0M=HVhr@andrew.cmu.edu> wb1j+@andrew.cmu.edu (William M. Bumgarner) writes:
>I'm writing several XCMD's that require using 'SendCardMessage'.  I have
>modelled the call after the format in Gary Bond's book (MySendCardMessage and
>ToPStr).  Everytime the XCMD excutes a SendCardMessage (even 'go next card'),
>hypercard beeps and terminates execution of the XCMD...

you are probably using a string constant. lsc changed the way it generated
code resources between 2.15 and 3.0. Read the section entitled "Global data in
code resources" on pages 84&85 in the lsc 3.0 User's manual. you will probably
find that you need to save, setup, and restore R4 as demonstrated in this
section. Good luck.