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Q175616: FIX: Error 438: "Object Doesn’t Support This Property or Method"

Article: Q175616
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:4.0
Operating System(s): 
Keyword(s): kb16bitonly kbnokeyword kbVBp kbVBp400bug kbOSWin98fix kbGrpDSVB kbDSupport
Last Modified: 09-DEC-2000

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The information in this article applies to:

- Microsoft Visual Basic Enterprise Edition, 16-bit, for Windows, version 4.0, on platform(s):
   - the operating system: Microsoft Windows 95 
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SYMPTOMS
========

Error 438 occurs when running a program in which a form is assigned to a
variable and that variable is used to access a control on the form if the
program is on a system running Windows 95 with Regional Settings set to a
setting other than English (United States). The error text is:

  Run-Time Error #438:
  Object doesn't support this property or method

RESOLUTION
==========

There are two possible workarounds for this problem.

- Access the form directly rather than by a variable containing the form.

  -or-

- Create property procedures in the form's code to provide access to the
  properties of the controls on the form.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This problem has been fixed in Windows 98.

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

To reproduce this bug consistently, you will need HeapWalker, a utility that
ships with the Windows 16-bit Software Development Kit and the 16-bit version of
Visual C++.

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

1. From Control Panel, click Regional Settings to open the Regional Settings
  dialog box. Set the Regional Settings to English (Australian).

2. Start the 16-bit edition of Visual Basic 4.0. If it is already running,
  select New Project from the File menu,.

3. Add a CommandButton to Form1.

4. Copy the following code to the Code window of Form1:

        Private Sub Command1_Click()
           Dim MyForm As Form
           Dim i As Long
           Set MyForm = Form1
           For i = 1 To 10000
              MyForm.Command1.Caption = i
              DoEvents
           Next i
         End Sub

5. From the File menu, click Make EXE File to create an executable file.

6. Run the executable file and then click the CommandButton in your program.
  While it is running, run HeapWalker's Segmentation Test. You will receive the
  run-time error #438.

Additional query words:

======================================================================
Keywords          : kb16bitonly kbnokeyword kbVBp kbVBp400bug kbOSWin98fix kbGrpDSVB kbDSupport 
Technology        : kbVBSearch kbAudDeveloper kbVB400Search kbVB16bitSearch
Version           : WINDOWS:4.0
Issue type        : kbbug
Solution Type     : kbfix

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

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