Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hoptoad!tim
From: tim@hoptoad.uucp (Tim Maroney)
Newsgroups: comp.sys.mac.programmer
Subject: Re: MacroMaker does strange things to the system...
Message-ID: <7611@hoptoad.uucp>
Date: 9 Jun 89 20:00:56 GMT
References: <789@tekno.chalmers.se> <7459@hoptoad.uucp> <32327@apple.Apple.COM>
Reply-To: tim@hoptoad.UUCP (Tim Maroney)
Organization: Eclectic Software, San Francisco
Lines: 42

In article <7459@hoptoad.uucp> tim@hoptoad.UUCP (Tim Maroney) writes:
>It's a well-known fact that Apple's own software is often the
>least compatible with system software revisions (and the same goes, I
>understand, for high-ranking Apple alumni like Andy Hertzfeld), and it
>is a problem.  But in this case, it's not really a serious one.

In article <32327@apple.Apple.COM> tecot@Apple.COM (Ed Tecot) writes:
>And I'd argue that it's not one at all...  Journaling was built with macros
>in mind (and guided tours, but I digress).  It's foolish to assume that you
>are the only one using a given service in the Macintosh.  Always be prepared
>to share.

Not quite.  Sven's complaint was that the advertised sharing mechanism
doesn't work exactly as advertised.  It's supposed to work like this:
When you set JournalFlag to a positive value, then event recording
Control calls will be sent to the driver whose reference number is in
JournalRef.  However, he was getting events even when JournalFlag is
zero, which he deduced to mean (I assume correctly) that MacroMaker was
changing the journaling mechanism, not just using it.  He does have
cause to complain if his deduction is correct.  This implies that not
only do you have to make sure that JournalFlag is zero before you use
the machanism, you have to make sure you don't use JournalRef while
JournalFlag is zero.  This is not something you would guess from Inside
macintosh; the way it reads, you should be able to turn off journaling
using JournalFlag only; in fact, you have to set both JournalFlag and
JournalRef when MacroMaker is running.

However, I pointed out that a simple save/restore strategy on
JournalRef ought to eliminate his problem, which is why I feel it's not
a serious difficulty.  If he makes sure that his driver's reference
number is only in JournalRef when he has set JournalFlag to negative or
positive, and the rest of the time it's set to whatever it was before
he set JournalFlag to non-zero, then he and MacroMaker should be able
to happily coexist.  Unfortunately, the message may not have reached
him -- at least, I haven't heard from him whether this worked or not.
That's why I'm repeating it now....
-- 
Tim Maroney, Mac Software Consultant, sun!hoptoad!tim, tim@toad.com
Postal: 424 Tehama, SF CA 94103; Phone: (415) 495-2934

If you vote for clowns, you have no right to complain that only clowns
make it to the ballot.