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From: beloin@batcomputer.tn.cornell.edu (Ron Beloin)
Newsgroups: comp.sys.mac
Subject: Re: Hypercard
Message-ID: <2635@batcomputer.tn.cornell.edu>
Date: Mon, 12-Oct-87 11:51:15 EDT
Article-I.D.: batcompu.2635
Posted: Mon Oct 12 11:51:15 1987
Date-Received: Tue, 13-Oct-87 05:38:10 EDT
References: <30594@sun.uucp>
Reply-To: beloin@tcgould.tn.cornell.edu (Ron Beloin)
Organization: Cornell Theory Center, Cornell University, Ithaca NY
Lines: 48
Keywords: command key cmdkey menus trap
Summary: script to trap cmd-keys and menus

In article <30594@sun.uucp> chuq%plaid@Sun.COM (Chuq Von Rospach) writes:
>[Warning: Hypercard is addictive. Warning: Hypercard is addictive.  Warning:]
no argument with that!
>
>(1) Is there any way to realiably and completely trap out cloverleaf
>    commands? I want to keep the user from doing things like creating 
>    new cards, deleting things, or using the clover-{1,2,3,4} keys because
>    it really hoses out the linked lists (and EVERYTHING in this stack is
>    linked). I've got buttons on the various backgrounds to do the
>    equivalents, and the menubar is hidden, but if the user types %N it'll
>    create a card that won't get linked in to any of the lists and get lost.
>    God forbid they delete a card when I'm not looking, and
>    First/Next/Prev/Last have little usefullness when you're talking about
>    lists of lists. I've tried trapping newCard at the stack level to see if
>    commandKey is down, but if they have quick fingers this isn't reliable.
>    I still need things like New Card, but under program control. I suppose
>    I can set global flags and refuse the newcard if the flag isn't set, but
>    trying to do that for everything I wnat to control on the menu seems
>    grotty. Since I want to release this thing to the Real World, I want to
>    monkey proof it as much as possible.

I put the follwing script into a card and it succeeded in doing what
you want (if I understand what you want correctly):

on idle
  if the commandkey is down then deadkey
end idle

on deadkey
  answer "Command-key items are not available" with "OK"
end deadkey

on domenu
  -- do not pass file
  -- do not pass edit
  -- do not pass go  :-)
  -- etc.
end domenu

note that to edit this script, you have to type
 "edit the script of this card" into the msgbox (or blind
typing works also)
 I haven't tried this at the background or stack level.

--ron.
 Ron Beloin, Ecosystems Research Center, Corson Hall, Cornell, Ithaca,NY 14853
 >> opinions << BITNET:BELOIN@CRNLTHRY; INTERNET:beloin@tcgould.tn.cornell.edu
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