Path: utzoo!attcan!uunet!aplcen!samsung!umich!umeecs!dip.eecs.umich.edu!ehowe
From: ehowe@dip.eecs.umich.edu (Ed Howe)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: Intercepting deleteCard message
Message-ID: <2916@zipeecs.umich.edu>
Date: 17 Jul 90 20:24:07 GMT
References: <6057@bgsuvax.UUCP>
Sender: news@zip.eecs.umich.edu
Organization: University of Michigan EECS Dept, Ann Arbor, MI
Lines: 32

In article <6057@bgsuvax.UUCP> instone@bgsuvax.UUCP (Keith Instone) writes:
>I can keep the user from sorting my stack with this simple little
>handler:
>
>        on sort
>        end sort
>
>but this doesn't work for the deleteCard message (that is, the empty handler
>doesn't keep the card from getting deleted).
>
        <portion deleted>
>
>All I REALLY want to do is ask "Are you sure you want to delete this card?"
>and abort if the user says NO.
>
>Any suggestions?

Try putting this in your stack...

on domenu what
  if what is "delete card" then
    answer "Are you sure?" with "Yes" or "No"
    if it is "Yes" then pass domenu
    else exit domenu
  end if
  pass domenu
end domenu

The routine can be easily modified to trap for other menu options as well.
(Note that it is important to PASS DOMENU if WHAT isn't what you were trapping
for...otherwise you'll totally disable menu commands...)
ELH