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

• 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.

Keywords          : buglist5.00 FxprgGeneral vfoxwin vfpfix5.0a kberrmsg kbprg kbbuglist kbfixlist
Version           : 5.0
Platform          : WINDOWS
Issue type        : kbbug
Solution Type     : kbfix