KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q257741: FIX: UserControl Validate Event Hangs the VB IDE

Article: Q257741
Product(s): Microsoft Visual Basic for Windows
Version(s): 6.0
Operating System(s): 
Keyword(s): kbActivexEvents kbVBp kbVBp600bug kbOSWin95 kbOSWin98 kbIDEProject kbGrpDSVB kbDSupport
Last Modified: 28-JUL-2001

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

- Microsoft Visual Basic Professional Edition for Windows, version 6.0, on platform(s):
   - the operating system: Microsoft Windows 95 
   - the operating system: Microsoft Windows 98 
   - the operating system: Microsoft Windows Millennium Edition 
- Microsoft Visual Basic Enterprise Edition for Windows, version 6.0, on platform(s):
   - the operating system: Microsoft Windows 95 
   - the operating system: Microsoft Windows 98 
   - the operating system: Microsoft Windows Millennium Edition 
-------------------------------------------------------------------------------

SYMPTOMS
========

If a UserControl has a control with code in the Validate event, and it is sited
on a form in a Standard EXE project, the project causes the system to lock up
when it is run in the Visual Basic integrated development environment (IDE).
This problem only occurs on Windows 95, Windows 98, or Windows Me computers.

STATUS
======

Microsoft has confirmed that this is a bug in the Microsoft products that are
listed at the beginning of this article. This bug was corrected in the latest
service pack for Visual Studio 6.0.

For additional information about Visual Studio service packs, click the following
article numbers to view the articles in the Microsoft Knowledge Base:

  Q194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why

  Q194295 HOWTO: Tell That a Visual Studio Service Pack Is Installed

To download the latest Visual Studio service pack, visit the following Microsoft
Web site:

  http://msdn.microsoft.com/vstudio/downloads/updates.asp

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

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

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

2. From the Project menu, add a new UserControl to the project.

3. Add a TextBox control and a Label control to the UserControl.

4. Paste the following code into the Code window of UserControl1:

  Option Explicit

  Private Sub Text1_Validate(Cancel As Boolean)
      MsgBox "Text1_Validate"
  End Sub

5. Close the designer of the UserControl, and then place an instance of it on
  Form1.

6. Save and run the project.

7. Click on Label1. Your Visual Basic IDE should lock up.

Additional query words: sp4

======================================================================
Keywords          : kbActivexEvents kbVBp kbVBp600bug kbOSWin95 kbOSWin98 kbIDEProject kbGrpDSVB kbDSupport kbVS600sp4fix kbOSWinME kbVS600sp5fix 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2
Version           : :6.0
Issue type        : kbbug
Solution Type     : kbfix

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

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.