Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!mit-eddie!bbn.com!nic!news.cs.brandeis.edu!chaos.cs.brandeis.edu!nm
From: nm@chaos.cs.brandeis.edu (Nicolas Mercouroff)
Newsgroups: comp.sys.mac.programmer
Subject: (Un)highlighting of menu
Summary: Why my menu doesn't unhighlight ?
Keywords: Menu, MDEF, highlight, System 6.0
Message-ID: <1991Mar5.154920.10808@news.cs.brandeis.edu>
Date: 5 Mar 91 15:49:20 GMT
Sender: Nicolas Mercouroff
Organization: Brandeis University
Lines: 46

I am trying to develop a program, and I have a problem with the 
highlighting of menus in system 6.0.x :

	Apple	File	Edit	DATA
				+-----------+
				| data01 -> |
				| ...      +---------+
				| DATAnn ->| DATAnn_1|
				| ...      | DATAnn_2|
				| DATA80 ->| ...     |
				+----------| DATAnn_i|
				           +---------+

I have a menu (named "DATA" for example), attached to the menu bar, of 
80 items (it's long, I know, but it's obliged). 

To each of these 80 items ("DATA01" .. "DATA80") is attached a sub-
menu of various number of items ("DATAnn_1" to "DATAnn_i", with i from 
1 to ~20). 

When I click on the menu title "DATA" in the menu bar, the menu 
unrolls. Then I "drag" with the cursor to an item "DATAnn", and the 
sub-menu unrolls. Then I drag to an item "DATAnn_#", and I release 
the button of the mouse. Both menus ("DATA" and "DATAnn") reroll, and 
"MenuSelect" returns the proper value selected ("DATAnn_#" of menu 
"DATAnn").

The problem arises when I select the menu "DATA", then an item "DATAnn", 
but I don't select an item of the sub-menu : I release the button with 
the arrow out of the sub-menu (on its right). "MenuSelect" returns 0 in 
the high order word, of course (nothing selected), both menus reroll, 
BUT the name of the main menu stays HIGHLIGHTED in the menu bar ! Even 
when I call HiliteMenu(0) after MenuSelect, the menu title stays 
highlighted FOREVER (until I quit or switch to another program). The 
only way to unhighlight the menu is to call DrawMenuBar each time 
MenuSelect is invoked, with a rather ugly result ...

Where is the problem ? Is it with MDEF of system 6.0.#, or with my 
program ? Does someone see a solution ? Many thanx in advance ...

P.S.: Sorry for the laboured explanations, I hope it's understandable
besides my wicked English (I'm French).


-Nicolas.
 nm@cs.brandeis.edu