KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q245062: PRB: OptionButtons Do Not Hold Logical Values

Article: Q245062
Product(s): Microsoft FoxPro
Version(s): WINDOWS:5.0,5.0a,6.0
Operating System(s): 
Keyword(s): kbCtrl kbDesigner kbvfp500 kbvfp600 kbGrpDSFox kbDSupport kbCodeSnippet
Last Modified: 25-APR-2000

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

- Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a, 6.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

In Visual FoxPro 5, it was possible to set OptionButtons to have logical values
instead of numeric. However, in Visual FoxPro 6, this behavior changed. While
the buttons can be set to logical values, clicking on a button will cause the
button's value property to be reset to numeric.

CAUSE
=====

OptionButtons should only have numeric values, even if the interface allows them
to be set differently.

STATUS
======

This behavior is by design.

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

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

1. Run the following code in Visual FoxPro 6.0:

  PUBLIC loForm

  loForm = CREATEOBJECT("form")
  WITH loForm
     .AddObject('opgTest', 'optiongroup')
     WITH .opgTest
        .ButtonCount = 3

        .Option1.Value = .T.
        .Option2.Value = .F.
        .Option3.Value = .F.

        .Visible = .T.
        .AutoSize = .T.
     ENDwith
     .Visible = .T.
  ENDwith

2. Open the debugger, and put the following values in the Watch window:

  loForm.opgTest.option1.value
  loForm.opgTest.option2.value
  loForm.opgTest.option3.value

3. Click the buttons and watch the debugger.

   - When first run:

  .T.
  .F.
  .F.

   - Click Option2:

  0
  1
  .F.

   - Click Option3:

  0
  0
  1

Additional query words: kbDSE

======================================================================
Keywords          : kbCtrl kbDesigner kbvfp500 kbvfp600 kbGrpDSFox kbDSupport kbCodeSnippet 
Technology        : kbVFPsearch kbAudDeveloper kbVFP500 kbVFP600 kbVFP500a
Version           : WINDOWS:5.0,5.0a,6.0
Issue type        : kbprb

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

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.