Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!ucdavis!iris!lim
From: lim@iris.ucdavis.edu (Lloyd Lim)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Simulating a Menu Bar with Pop-Up Menus
Message-ID: <6145@ucdavis.ucdavis.edu>
Date: 4 Dec 89 20:52:20 GMT
References: <9095@hoptoad.uucp> <1989Nov28.053644.28100@agate.berkeley.edu> <2880@murtoa.cs.mu.oz.au> <32943@ucbvax.BERKELEY.EDU> <2884@murtoa.cs.mu.oz.au>
Sender: uucp@ucdavis.ucdavis.edu
Reply-To: lim@iris.ucdavis.edu (Lloyd Lim)
Organization: U.C. Davis - Department of Electrical Engineering and Computer Science
Lines: 39

In article <2884@murtoa.cs.mu.oz.au> rob@murtoa.UUCP (Robert Wallen) writes:
>>I just checked THINK C V.4 for this. It crashed with a bus error.  
>
>Hmmm.  Its been a while, but the last time I checked (may have been on a PLUS)
>it just created a real small window which had a scroll up AND a scroll down
>arrow and no entries ...

I just checked this on my IIcx with 6.0.3 and it doesn't crash either.  An
INIT might have caused this crash?

>>It is undoubtedly a bug in Apple's code.
>
>Yeh?  Why?  I mean sure the standard MDEF doesnt work quite the way I want it
>to but I have never had it crash with bus errors or address errors...
>Id blame Symantec before Apple on this one.

I agree since Symantec's MDEF is doing things to Apple's MDEF that wouldn't
ever happen normally.

>>On the other hand, my custom MDEFs have never had an problem with this.
>
>My biggest object to writing my own MDEF (which is basically a copy of MDEF-0)
>is that I cant track Apples changes to the system.  I dont have a color Mac
>(just an SE/30 :-) and so its 'real hard' to make sure that my custom MDEF,
>CDEF, etc handle all the appropriate 'mctb' thingies.  I would prefer to be
>able to call the 'standard' code because I know (hope) that Apple will keep it
>up to date for me.

If the thing you are trying to achieve is not that much different from the
standard Apple supplied *DEF, total compatibility can be achieved by calling
the Apple version to handle the normal stuff.  I've had experience doing this
with my Default CDEF and it works fine.  I also get bugged by those big white
empty spaces in pop-up menus so I'm writing an MDEF to fix this.  It will
scroll better than Symantec's and I'll release it just like the Default CDEF.

+++
Lloyd Lim     Internet: lim@iris.ucdavis.edu (128.120.57.20)
              Compuserve: 72647,660
              US Mail: 146 Lysle Leach Hall, U.C. Davis, Davis, CA 95616