Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!samsung!munnari.oz.au!murtoa.cs.mu.oz.au!rob
From: rob@cs.mu.oz.au (Robert Wallen)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Simulating a Menu Bar with Pop-Up Menus
Message-ID: <2891@murtoa.cs.mu.oz.au>
Date: 5 Dec 89 07:12:46 GMT
References: <9095@hoptoad.uucp> <1989Nov28.053644.28100@agate.berkeley.edu> <2880@murtoa.cs.mu.oz.au> <1989Dec4.013339.20945@agate.berkeley.edu>
Reply-To: rob@murtoa.UUCP (Robert Wallen)
Organization: Comp Sci, Melbourne Uni, Australia
Lines: 46

Recently lippin@math.berkeley.edu writes:
>Recently rob@murtoa.UUCP (Robert Wallen) wrote:
>>
>>On a related issue.  Has anyone worked out how to hack the PopUpMenuSelect so
>>that it doesnt present the users with that stupid blank rectangle and the
>>scroll arrow if it is too close to the edge of the screen.
>
>PopupMenuSelect, when used as directed, produces the correct result --
>it goes to some trouble to put the item you choose under the mouse,
>and this can produce some funny looking scrolling menus if you're near
>the edge of the screen.

The correct result?  So many times, I find that it scrolls the lot straight
away because I was positioned on the arrow...

>But when you're perverting PopupMenuSelect to serve other ends, the
>way menus are positioned may not be appropriate.  The best way I've

I think I dislike the term 'perverting'.  What is PopUpMenuSelect supposed to
do if its not pop-up menus where the user clicks?  Personally, I think this is
one of the arguments that Apple used to convince the world that it didnt steal
too liberally from Smalltalk -- Xerox seemed to handle popups properly 
regardless of where the mouse was clicked 8-)

>found around this is to have the MDEF misinterpret the hPopUpMsg.  For

Once again, we come down to a custom MDEF.  Apple DTS, are you reading this
string?  If I need a custom MDEF, seems to me that MDEF-0 must be broken...

>my menu bar in a window, for example, I use this to bounce the menu
>off the edge of the screen, so that it never has to scroll (given

How do you mean?  Do you miscalculate the rectangle requested?

>sufficiently short menus, of course.  LSC 4.0, on the other hand,
>seems to use it to get the menu positioned properly underneath the
>title bar of the window -- in extreme cases, making the menu too small
>to use; Apple didn't (and had no reason to) provide for the
>possibility of scrolling menus less than 3 items long.  (BTW, I

^^^^^ Apple DTS -- please take note

>haven't been able to reproduce David Phillip Oster's bus error when
>trying this on my mac II, but perhaps I haven't tried hard enough.)

Nor I on the SE/30...