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Q156864: FIX: Debugger Hangs Expanding TreeView in Debug Watch Window

Article: Q156864
Product(s): Microsoft FoxPro
Version(s): 5.0 5.0a
Operating System(s): 
Keyword(s): kbinterop kbtool kbvfp kbvfp500aBUG kbvfp500bugkbbuglist
Last Modified: 23-MAR-2000

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a 
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SYMPTOMS
========

Expanding the \Objects\Nodes section of a TreeView Control object in the Watch
Window of the debugger causes Visual FoxPro for Windows to freeze.

CAUSE
=====

The problem is with the TreeView control and not the debugger.

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products listed at
the beginning of this article. This has been corrected in Visual FoxPro 6.0.

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

Steps to Reproduce Problem
--------------------------

1. Create a Form and add a TreeView Control to it as following:

   - Choose OLE Container Control in the Form Controls toolbar and then click
     the Form.

   - When the Insert Object dialog comes up, select the Insert Control option
     and then select the TreeView Control from the Control Type list. Click OK
     to return to the Form Designer.

2. Add a Command button to the form with the following code in the Click event:

     USE HOME()+"samples\data\customer"
     SELECT customer
     oNodes = THISFORM.oleControl1.Nodes
     oNodes.CLEAR
     SCAN
        oNodes.ADD(,1,ALLTRIM(cust_id),ALLTRIM(company),0)
     ENDSCAN

3. Run the Form. Click on the Command button to populate the TreeView object.

4. Open the debugger and enter the following in the Watch Window, and then press
  the Enter key:

     _SCREEN.ACTIVEFORM.OleControl1

5. In the Watch window, expand the "SCREEN.ACTIVEFORM.OleControl1" watch
  expression.

6. Expand the Objects section of the TreeView OleControl.

7. Expand the Nodes section of the Objects section.

At this point, Visual FoxPro for Windows will freeze and you will not be able to
perform any functions from within Visual FoxPro for Windows or the Debugger
window.

Additional query words: kbvfp600fix

======================================================================
Keywords          : kbinterop kbtool kbvfp kbvfp500aBUG kbvfp500bug kbbuglist
Technology        : kbVFPsearch kbAudDeveloper kbVFP500 kbVFP500a
Version           : 5.0 5.0a
Issue type        : kbbug
Solution Type     : kbfix

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