FIX: Clicking from ListBox on Form to Command Window Gives GPF (161900)


The information in this article applies to:

  • Microsoft Visual FoxPro for Windows 5.0
This article was previously published under Q161900

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.
Modification Type:MajorLast Reviewed:10/16/2002
Keywords:kbBug kberrmsg kbProgramming kbvfp500aFIX KB161900
©2002 Microsoft Corporation. All rights reserved.