DOCUMENT:Q145619  11-JAN-2001  [vbwin]
TITLE   :FIX: Maximized Win95 MDI Child Form Disappears
PRODUCT :Microsoft Visual Basic for Windows
PROD/VER:WINDOWS:4.0
OPER/SYS:
KEYWORDS:kbVBp400bug kbVBp500bug kbOSWin98fix kbGrpDSVB kbDSupport

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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, 32-bit, for Windows, version 4.0 
 - Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows, version 4.0 
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SYMPTOMS
========

Under certain circumstances, a maximized MDI child form is invisible and cannot
be made visible. The problem occurs under Windows 95, Windows NT 4.0, and
Windows 2000 when using the 32-bit version of Visual Basic 4.0.

RESOLUTION
==========

When the MaxButton property of Form1 is set to True, the problem does not occur.

STATUS
======

Microsoft has confirmed this to be an issue in Microsoft Windows 95, Windows NT
4.0, and Windows 2000. This problem has been fixed in Microsoft Windows 98.

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

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

1. Start Visual Basic 4.0, 32-bit. If it is already running, click New Project
   on the File menu.

2. Use the Insert/MDI Form menu option to add an MDIForm to the project.

3. In the Design Environment Property window, set the following properties for
   Form1:

   MinButton = False
   MaxButton = False
   ControlBox = False
   MDIChild = True
   WindowState = 2 - Maximized
   Caption =
   Borderstyle = 0 - None 'Options 1 - 5 will also work.

4. Run the application. Form1 will not be visible.

Workaround
----------

1. Start Visual Basic 4.0, 32-bit. If it is already running, click New Project
   on the File menu.

2. Use the Insert/MDI Form menu option to add an MDIForm to the project.

3. In the Design Environment Property window, set the following properties for
   Form1:

   MinButton = False MaxButton = False ControlBox = False MDIChild = True
   WindowState = 0 - Normal Caption = Borderstyle = 0 - None 'Options 1 - 5 will
   also work.

4. In the General Declaration section of Form1, paste the following:

                Private Sub Form_Load()
            'You could copy the following 4 lines to the Resize
            'event of MDIForm1 as well for best results.
            Form1.Top = 0
                    Form1.Left = 0
            Form1.Width = MDIForm1.Width - 185
            Form1.Height = MDIForm1.Height - 470
                End Sub

5. Run the application. Form1 will be visible.

Additional query words:

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Keywords          : kbVBp400bug kbVBp500bug kbOSWin98fix kbGrpDSVB kbDSupport 
Technology        : kbVBSearch kbAudDeveloper kbVB400Search kbVB400
Version           : WINDOWS:4.0
Issue type        : kbbug
Solution Type     : kbfix

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