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Q161900: FIX: Clicking from ListBox on Form to Command Window Gives GPF

Article: Q161900
Product(s): Microsoft FoxPro
Version(s): 5.0
Operating System(s): 
Keyword(s): kberrmsg kbprogramming kbvfp kbvfp500aFIX kbvfp500bugkbbuglist kbfixlist
Last Modified: 26-AUG-1999

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

- Microsoft Visual FoxPro for Windows, version 5.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

Repetitive clicking between a multi-line Editbox control on a form, where the
Editbox contains many rows of data, and the Command window results in an
operating system-level error. A dialog box appears that states the following:

  This program has performed an illegal operation and will be shut down.

STATUS
======

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

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

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

1. Copy and paste the following code into a program named Test.prg in Microsoft
  Visual FoxPro version 5.0 running on Windows 95:

     **************************************************
     *-- Program: test.prg
     *-- Code to illustrate page fault in
     *-- Visual FoxPro for Windows 5.0

     PUBLIC oForm
     oForm = CREATEOBJECT("testform")
     oForm.Show

     **************************************************
     *-- Form:         testform
     *-- ParentClass:  form
     *-- BaseClass:    form
     *
     DEFINE CLASS testform AS FORM
        Top = 0
        Left = 0
        DoCreate = .T.
        Caption = "Testform Form"
        Name = "testform"

        ADD OBJECT edit1 AS editbox WITH ;
           Height = 217, ;
           Left = 12, ;
           Top = 12, ;
           Width = 121, ;
           Name = "Edit1"

        PROCEDURE Click
           KEYBOARD REPLICATE("a"+CHR(13), 60 )
        ENDPROC

     ENDDEFINE
     *
     *-- EndDefine: testform
     **************************************************

2. Run the program by issuing the following command in the Command window:

        DO TEST.PRG

3. With the mouse, click four or five times in the gray area of the form.

4. Click in the Command window.

Additional query words:

======================================================================
Keywords          : kberrmsg kbprogramming kbvfp kbvfp500aFIX kbvfp500bug kbbuglist kbfixlist
Technology        : kbVFPsearch kbAudDeveloper kbVFP500
Version           : 5.0
Issue type        : kbbug
Solution Type     : kbfix

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

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