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Q315647: FIX: Dockable Windows May Cause VFP to Crash

Article: Q315647
Product(s): Microsoft FoxPro
Version(s): 7.0
Operating System(s): 
Keyword(s): kbvfp kbGrpDSFox kbDSupport kbCodeSnippet kbvfp700 _IK283
Last Modified: 24-JAN-2002

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, version 7.0 
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SYMPTOMS
========

If the internal name table contains more than 32,000 entries and you access a
dockable window, Visual FoxPro (VFP) may close unexpectedly with the following
error:

  Fatal Error: Exception code=C0000005

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Visual FoxPro for
Windows 7.0. For additional information, please see the following article in the
Microsoft Knowledge Base:

  Q316964 How to Obtain the Latest Visual FoxPro for Windows 7.0 Service Pack

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products that are
listed at the beginning of this article. This problem was first corrected in
Visual FoxPro for Windows 7.0 Service Pack 1.

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

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

1. Add the line MVCOUNT=64000 to your Config.fpw file and restart Visual FoxPro.
  This ensures that Visual FoxPro can add enough entries to the name table to
  cause the error.

2. Create a program called "Test", add the following code, and then run the
  program:

  FOR x = 1 TO 50000
  	varname = "blah" + TRANSFORM(x)
  	PUBLIC &varname
  ENDFOR
  ACTIVATE WINDOW PROPERTIES

3. Make sure that the Properties window is dockable by right-clicking its title
  bar and selecting Dockable (if not already set).

4. Press ALT+TAB to switch focus away from Visual FoxPro, and press ALT+TAB
  again to return. (This packs the name table.)

5. Close the Properties window.

  Visual FoxPro closes after reporting the error mentioned in the "Symptoms"
  section.

Additional query words: crash kbVFP700sp1fix

======================================================================
Keywords          : kbvfp kbGrpDSFox kbDSupport kbCodeSnippet kbvfp700 _IK283 
Technology        : kbVFPsearch kbAudDeveloper kbVFP700
Version           : :7.0
Issue type        : kbbug
Solution Type     : kbfix

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