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From: cyosta@taux01.UUCP ( Yossie Silverman)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Tail patches
Message-ID: <2839@taux01.UUCP>
Date: 11 Nov 89 09:05:50 GMT
References: <1459@sequent.cs.qmc.ac.uk> <36250@apple.Apple.COM> <5056@internal.Apple.COM> <1989Nov7.212837.5146@oracle.com> <5080@internal.Apple.COM> <1467@sequent.cs.qmc.ac.uk>
Reply-To: cyosta@taux01.UUCP ( Yossie Silverman )
Organization: National Semiconductor (IC) Ltd, Israel
Lines: 43

In article <1467@sequent.cs.qmc.ac.uk> jeremyr@cs.qmc.ac.uk (Jeremy Roussak) writes:
.>As for "sometimes you just gotta," all I can say is: don't do whatever it 
.>is you're doing that's "just gotta."  Find a "more inventive" way.
.
.Since I initiated this thread, perhaps I could explain what I was doing, 
.and ask if anyone can suggest an alternative way of doing it.
.
.I was challenged to write a patch which would play a sound, preferably
.whenever the Finder emptied the wastebasket (doesn't appear to be possible)
.or at least when "Empty Wastebasket" was chosen from the menu.  The
.reason for this curious request was that the person concerned had changed
.the wastebasket icon to look like a toilet and wanted it to flush!
.
.The obvious thing to do, (and we all do obvious things, don't we...)
.was to do a tail patch on MenuSelect, look for a return of 0x00050002,
.check that CurApName is the same as FinderName and to play the sound
.if it is.  I did it.  It worked.  It's not subtle, or particularly
.clever, I confess.
.
.How should I have done this, without using a tail patch?
.
.Jeremy Roussak

I have a neat idea, check for a transition from the 'empty trash' icon
to the 'full trash' icon, and back.  In you case you can produce an
obscene noise (toilet seat going slam) when trash fills, and a flush
sound when it empties.  This would be done by patching copybits and
doing some compares on the bitmap's when the appname = finder.  Whatcha
think?  It would only fail if some other application had the same icon
and it was being displayed in a finder window.  It would fail when someone
changed the 'trash can' icons on you.  This seems to be a legal patch,
after all ColorFinder is doing it as well as ColorQD32 (and who knows
who else).  In fact, the same mechanism could probably be used for other
interesting effects!  You could make noises whenever an icon of your
choice appeared on the screen.  Of course this would fail if ColorFinder
was replacing the B/W icon (which you recognize) with a color one (which
you don't).  Ah well, enough talk.  Go for it!   - Yossie

-- 
Yossie Silverman                                   What did the Caspian sea?
National Semiconductor Ltd. (Israel)
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