Path: utzoo!attcan!uunet!lll-winken!ames!mailrus!caen.engin.umich.edu!sol.engin.umich.edu!mystone
From: mystone@sol.engin.umich.edu (Dean Yu)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Why is InsertMenu called with every click in the menubar??
Message-ID: <41b1d71a.a590@mag.engin.umich.edu>
Date: 26 Feb 89 01:52:00 GMT
References: <41adbdb2.a590@mag.engin.umich.edu> <26389@apple.Apple.COM>
Sender: netnews@caen.engin.umich.edu
Reply-To: mystone@caen.engin.umich.edu (Dean Yu)
Organization: Computer Aided Engineering Network, University of Michigan
Lines: 45
Sender:
Followup-To:

In article <26389@apple.Apple.COM> keith@Apple.COM (Keith Rollin) writes:
  (Stuff that I said...)

>It doesn't have to be anything ominous. It could simply be that the application
>you were using was resetting it menus all the time. For instance, one way that
>applications can set up a 'Windows' menu is to scan the window list when the
>user clicks on that menu, and create the appropriate menu items then. Another
>thing that could be happening is that the application is inserting hierarchical
>menus only when it needs them (ie, when you click on the menu).

  It wasn't the application.  It was the system calling InsertMenu.
>
>I tried reproducing your situation, but was unable to. I set up TMON to break
>when _InsertMenu was called. I then ran 3 applications (MPW, AppleLink, and
>SmartCom). None of these applications broke when I clicked on the menu. 

  I tried it with an A-trap break in MacsBug, and those weren't catching
either.  Read on!

>Finally, how do you know that it is the system that is calling _InsertMenu? Did you write the application, so that you know what is going on? If so, then the 
>source of the call may be an INIT or something. After setting up TMON, I also 
>called up OnCue. Sure enough, my Mac broke into TMON 3 times: once for the 
>main menu, and twice for the 2 hierarchicals I had in it.
>
   I admit it.  I was patching InsertMenu.  I had placed a call to SysBeep
in my patch to make sure my routine was getting called.  (This is the first
time I've used Get/Set TrapAddress, so I wanted to make sure I was doing it
right.)  SO my routine was getting called, and it beeped every time I clicked
in the menubar.  Let me ammend that statement about the ATB's.  At first, I
had set an ATB for only application calls to the trap.  MacsBug didn't break
in.  I reset it to catch all calls to the trap, and it broke.  That's why I
think the system is calling InsertMenu.  Although I admit it might be an
INIT.

______________________________________________________________________________
Dean Yu                            |  E-mail:    mystone@caen.engin.umich.edu
University of Michigan             |  Real-mail: Dean Yu
Computer Aided Engineering Network |             2413 Kelsey House
===================================|             600 E Madison
"These are MY opinions." (My       |             Ann Arbor, MI 48109
 employer doesn't want them.       |==========================================
 Actually, they don't really care  | 
 what I think.  But President      |   This space intentionally left blank.  
 Duderstadt does...)               | 
------------------------------------------------------------------------------