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From: minow@ranger.enet.dec.com (Martin Minow)
Newsgroups: comp.sys.mac.programmer
Subject: PostHighLevelEvent from a completion routine?
Message-ID: <23852@shlump.lkg.dec.com>
Date: 26 Jun 91 14:06:55 GMT
Sender: newsdaemon@shlump.lkg.dec.com
Organization: Digital Equipment Corporation
Lines: 21

An application I'm working on uses the PPCToolbox to process remote
requests.  It is currently running as an application (it will become
an INIT/CDEV, or maybe a "faceless background procedure"  in the future),
and all PPC processing runs in completion routines.  (See Keith Rollin's
INIT - CDEV demo on the System 7 developer's CD Rom for a similar example.)

Since the body of the program runs in completion routines, I need a way to send
error status and logging information to the main application.  However, when
I tried to use PostHighLevelEvent from a completion routine, the function
returned error -903 (noPortErr).  This is not in the expected error list in
Inside Mac VI -- and PostHighLevelEvent is not specifically noted as
"can/can't call from completion routines."

While I can fall back on using shared globals, I'm wondering if there
is any better way for a completion routine to send an "event" to
an application.

Thanks for any suggestions.

Martin Minow
minow@ranger.enet.dec.com