Q121096: BUG: Wrong Menu with Maximized MDI Child and No Control Box

Article: Q121096
Product(s): Microsoft Visual Basic for Windows
Version(s): 2.0,3.0
Operating System(s): 
Keyword(s): 
Last Modified: 11-JAN-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual Basic Standard Edition for Windows, versions 2.0, 3.0 
- Microsoft Visual Basic Professional Edition for Windows, versions 2.0, 3.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

If you have a maximized MDI child form that doesn't contain a ControlBox
(ControlBox = False), references to the MDI parent menus will control the wrong
menu.

WORKAROUND
==========

The only way to remedy this problem is to set the MDI child form's ControlBox
property to True.

STATUS
======

Microsoft has confirmed this to be a bug in Microsoft Visual Basic versions 2.0
and 3.0 for Windows. We are researching this problem and will post new
information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Steps to Reproduce Problem
--------------------------

1. Start Visual Basic and create a new project.

2. Add an MDI form to the project

3. Add a menu to the MDI form using the following as a guide:

  Caption           Name
  --------------------------
  Menu1             mMenu1
  ....Menu1Item1    mMenu11
  Menu2             mMenu2
  ....Menu2Item1    mMenu21

4. Add the following code for menu items:

     Sub mMenu11_Click ()
        Form1.Show
     End Sub

5. Set Form1.MDIChild = True and Form1.ControlBox = False

6. Add the following code to Form1:

     Sub Form_Click()
        MDIForm1!mMenu1.enabled = not MDIForm1!mMenu1.enabled
     End Sub

7. From the Options Menu, choose Project Options. Change the startup form to
  MDIForm1

8. Run the program. Choose Menu1Item1 from Menu1. The MDI child should appear.
  Click the MDI child form. This disables Menu1. Maximize the MDI child, and
  click it again. Now Menu2 is disabled.

Additional query words: 2.00 3.00 buglist2.00 buglist3.00

======================================================================
Keywords          :  
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB300Search kbVB300 kbVB200
Version           : :2.0,3.0
Issue type        : kbbug

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1986-2002.