Path: utzoo!news-server.csri.toronto.edu!rutgers!att!princeton!phoenix!bskendig
From: bskendig@phoenix.Princeton.EDU (Brian Kendig)
Newsgroups: comp.sys.mac.programmer
Subject: Re: App unexpectedly quit(1) - MultiMad!
Message-ID: <7162@idunno.Princeton.EDU>
Date: 14 Mar 91 14:35:40 GMT
References: <29053.27dedb76@kuhub.cc.ukans.edu>
Sender: news@idunno.Princeton.EDU
Organization: Starfleet Academy: Princeton University
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In article <29053.27dedb76@kuhub.cc.ukans.edu> 2fmlcalls@kuhub.cc.ukans.edu writes:
>An app I'm working on runs fine under the Finder.  Well, I thought I'd write
>my first WNE program for MultiFinder.  It doesn't run under MultiFinder now.
>App unexpectedly Quit (1) - error.
>What does the 1 signify?  Is that a standard code (i.e. Bus Error) or Multi's
>own?  And what would cause it to unexpectedly quit?  I've bumped my SIZE up to
>1.5 meg to no avail.  As well, under LSP 3.0 with a 1 meg Zone size for my App
>under Multi - no crashes or errors!  Just the compiled code drops out.  Under
>the Finder though it STILL works - just not Multi.

I'm not sure what the (1) means (any other netters out there care to
elucidate?), but the "Application unexpectedly quit" message means,
simply, that your program had an error and crashed.  The Macintosh was
fortunately able to regain control, but the errant program might still
have had a chance to romp merrily through memory and play with other
other running programs, so the safest thing to do when you see this
error is to reboot at the first chance.

Your program is probably crashing into the limits set for it by
Multifinder; either it got away with buggily writing to random memory
addresses under the Finder because it had the run of the machine
anyway, or you're just implementing Multifinder-awareness incorrectly.
For a good introduction on how to do Multifinder-awareness (and lots
of other Mac programming things), I'd suggest _The Macintosh Pascal
Programming Primer_, or whatever it's called (by David Mark and
Cartwright Reed?).  The original Primer was written for C, but was so
popular that a second C volume and this Pascal edition were written.

Good luck!

     << Brian >>

| Brian S. Kendig      \ Macintosh |   Engineering,   | bskendig             |
| Computer Engineering |\ Thought  |  USS Enterprise  | @phoenix.Princeton.EDU
| Princeton University |_\ Police  | -= NCC-1701-D =- | @PUCC.BITNET         |
"It's not that I don't HAVE the work to *do* -- I don't DO the work I *have*."