Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!usc!apple!jdevoto
From: jdevoto@Apple.COM (Jeanne A. E. DeVoto)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: Question about protocol for trapping menu items.
Summary: pass aborts the current handler
Keywords: domenu, compact, trap
Message-ID: <48422@apple.Apple.COM>
Date: 24 Jan 91 06:29:50 GMT
References: <1991Jan23.234729.7744@world.std.com>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 32

In article <1991Jan23.234729.7744@world.std.com> ralph@world.std.com
(Ralph Lombreglia) writes:
>Why does the following *not* work?
>
>on doMenu what
>  if what is "Compact Stack" then
>    close window "MyPalette"
>    pass doMenu
>    palette "MyPalette", "345,80"
>  else pass doMenu
>end doMenu

The reason this doesn't work is that the "pass" keyword halts the current
handler. "Pass" means "forget this handler and just pass the message on
to the next level of the message hierarchy."

This should work:

  on doMenu theItem
    if theItem is "Compact Stack" then
      close window "MyPalette"
      send "doMenu Compact Stack" to HyperCard -- avoids recursion
      palette "MyPalette", "345,80"
    else pass doMenu
  end doMenu
-- 
========= jeanne a. e. devoto ========================================
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