Q141737: BUG: Invalid Page Fault When Form Released in Error Event

Article: Q141737
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0,3.0b,5.0
Operating System(s): 
Keyword(s): kbbuglist
Last Modified: 10-FEB-2000

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

- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

A formset contains a command that releases the form in the form's error event.
If the formset is run multiple times and released due to errors, Visual FoxPro
will cause an Illegal Operation under Windows 95 and exit to the operating
system.

WORKAROUND
==========

Place RELEASE THISFORMSET in the Error Event of the form instead of using
RELEASE THISFORM. Then the form will run successfully.

STATUS
======

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

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

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

1. Create a Formset containing one form.

2. In the Activate Event of the form enter the following lines of code:

     ERROR(1705)
     ERROR(1705)

3. Add a command button, and add the following command to its Click event:

     THISFORM.RELEASE

4. In the Forms Error event, enter the following code:

     ? nerror,MESSAGE()
     WAIT
     RELEASE THISFORM

5. Run the form two or three times. Visual FoxPro will return an Invalid Page
  Fault error and exit to the operating system.

Additional query words: VFoxWin page fault buglist3.00 kbvfp300 kbvfp300b kbvfp500 buglist3.00b

======================================================================
Keywords          :  kbbuglist
Technology        : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP500
Version           : WINDOWS:3.0,3.0b,5.0

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

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.