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Article: Q247359
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:4.0,5.0,6.0
Operating System(s): 
Keyword(s): kbMDI kbMenu kbVBp kbVBp400bug kbVBp500bug kbVBp600bug kbGrpDSVB kbDSupport
Last Modified: 11-JAN-2001

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The information in this article applies to:

- Microsoft Visual Basic Standard Edition, 32-bit, for Windows, version 4.0 
- Microsoft Visual Basic Professional Edition, 16-bit, for Windows, version 4.0 
- Microsoft Visual Basic Professional Edition, 32-bit, for Windows, version 4.0 
- Microsoft Visual Basic Enterprise Edition, 16-bit, for Windows, version 4.0 
- Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows, version 4.0 
- Microsoft Visual Basic Learning Edition for Windows, versions 5.0, 6.0 
- Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0 
- Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0 
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SYMPTOMS
========

When you open an MDIChild Form, it does not show in the WindowList. This occurs
if you have a MDIChild form that is hidden, and the Windowstate of the MDIChild
forms is Maximized.

RESOLUTION
==========

Since this problem only occurs when closing maximized MDIChild forms, you need
to set the form's Windowstate property to Normal for each MDIChild form before
it is closed. This can be done in the MDIChild form's Unload event by setting
its Visible property to False. Doing this sets the Windowstate of the form to
Normal, while preserving the Windowstate of the MDIChild windows. This method is
better than explicitly setting the Windowstate, because doing so also changes
the WindowState of the other MDIChild Forms. Please refer to the sample code in
the "More Information" section for a workaround.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article.

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

Steps to Reproduce Behavior
---------------------------

1. Open a new Standard EXE project in Visual Basic. Form1 is created by default

2. From the Project menu add two more forms to the project (Form2 and Form3).

3. Set the MDIChild property to True and the WindowState property to Maximized
  for Form1, Form2 and Form3.

4. From the Project menu add an MDI Form to the project.

5. Choose Menu Editor from the Tools menu in the Visual Basic IDE. Add a top
  level menu to the MDI Form. Give it the following property settings:

  Caption <A0><A0>Open
  Name <A0><A0><A0><A0><A0>mnuMaster
  Index <A0><A0><A0><A0><A0>0

6. Under this top level menu, create two submenus. Give the first submenu the
  following property settings:

  Caption <A0><A0>Form1
  Name <A0><A0><A0><A0><A0>mnuOpen
  Index <A0><A0><A0><A0><A0>0

  Give the second submenu the properties:

  Caption <A0><A0>Form2
  Name <A0><A0><A0><A0><A0>mnuOpen
  Index <A0><A0><A0><A0><A0>1

7. Add another top level menu, giving it the following properties:

  Caption <A0><A0><A0><A0><A0><A0><A0><A0>Window
  Name <A0><A0><A0><A0><A0><A0><A0><A0><A0><A0><A0>mnuMaster
  Index <A0><A0><A0><A0><A0><A0><A0><A0><A0><A0><A0>1
  WindowList <A0><A0><A0>Checked

  At this point you should have a menu that looks like the following:

  Open
  ...Form1
  ...Form2
  Window

8. Paste the following code into the General Declarations section of the MDI
  form's code window.

  Private Sub MDIForm_Load()
      Load Form1
      Load Form2
      Load Form3
      Form3.Hide
  End Sub

  Private Sub mnuOpen_Click(Index As Integer)
      Select Case Index
          Case 0
              Form1.Show
          Case 1
              Form2.Show
      End Select
  End Sub

9. Run the Application. See Form1 and Form2 in the Windowlist, and Form2 will be
  the active window. Now close Form2.

10. From the Open menu, select Form2. Form2 opens, but notice it is not showing
  in the Windowlist. Only Form1 shows in the WindowList.

11. To work around the problem, add the following code to the form Unload event
  for each MDIChild Form. In our example, do this for Form1, Form2, and
  Form3.

  Me.Visible = False

REFERENCES
==========

For more information on creating menus, see the "Menu Basics" section in the
MSDN.

Additional query words:

======================================================================
Keywords          : kbMDI kbMenu kbVBp kbVBp400bug kbVBp500bug kbVBp600bug kbGrpDSVB kbDSupport 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVBA500 kbVBA600 kbVB500 kbVB600 kbVB400Search kbVB400 kbVB16bitSearch
Version           : WINDOWS:4.0,5.0,6.0
Issue type        : kbbug
Solution Type     : kbpending

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

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Q247359: BUG: WindowList Menu Does Not Always Show MDIChild Forms