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Q318902: FIX: Visual FoxPro 7.0 Quits When You Run a Form with Grid

Article: Q318902
Product(s): Microsoft FoxPro
Version(s): 7.0
Operating System(s): 
Keyword(s): kbGrpDSFox kbDSupport kbCodeSnippet kbvfp700 _IK283
Last Modified: 08-MAY-2002

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The information in this article applies to:

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

SYMPTOMS
========

When you run a form that has a grid control in the Visual FoxPro 7.0 (VFP7)
development environment, VFP7 quits without an error message.

CAUSE
=====

The ControlSource property of a control that the grid contains is set to a
non-existent data source, and the Unload event of the form contains code.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information on support costs, please go to the following address on the World
Wide Web:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

The English version of this fix should have the following file attributes or
later:

  Date       Time    Version      Size    File name     Platform
  -------------------------------------------------------------
  8-Mar-2002 13:30:01  9499      4.16MB   Vfp7.exe
  8-Mar-2002 13:30:02  9499      1.09MB   Vfp7enu.dll



STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Visual FoxPro 7.0.

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

Steps to Reproduce the Behavior:
--------------------------------

Paste the following code in a program (.prg) file, and then run the program from
the Command window:

  LOCAL laForm[1], loForm AS FORM
  CD JUSTPATH(SYS(16))
  CLOSE DATABASES ALL
  ERASE Q318902*.*

  CREATE TABLE Q318902_dbf (cField1 C(10), cField2 C(10))
  CREATE FORM Q318902_frm NOWAIT

  ASELOBJ(laForm, 1)
  loForm = laForm(1)
  WITH loForm
  	.ADDOBJECT("Grid1", "Grid")
  	.grid1.COLUMNCOUNT = 2
  	.grid1.RECORDSOURCE = "Q318902_dbf"
  	.grid1.Column1.CONTROLSOURCE = "Q318902_dbf.cField1"
  	.grid1.Column2.CONTROLSOURCE = "Q318902_dbf.cField2Bad"
  ENDWITH
  KEYBOARD '{ctrl+w}'
  DOEVENTS()

  MODIFY FORM Q318902_frm NOWAIT METHOD UNLOAD
  DOEVENTS()
  KEYBOARD "* Remove this line: form does not disappear.{CTRL+W}{CTRL+W}"
  DOEVENTS()

  CLOSE ALL
  USE Q318902_dbf
  DO FORM Q318902_frm

Observe that Visual FoxPro quits.

Additional query words: exit crash grid gone disappears

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

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

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