KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q130325: PRB: Cannot Add Methods to Objects at Design Time

Article: Q130325
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0
Operating System(s): 
Keyword(s): 
Last Modified: 10-FEB-2000

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

- Microsoft Visual FoxPro for Windows, version 3.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

Selecting the Form, New Property option while a control is highlighted does not
add a property to a control. The new property is added to a form.

CAUSE
=====

This is by design. When a form is created with the CREATE FORM or MODIFY FORM
commands, a form object is instantiated, and instances of objects are
manipulated in design mode. Generally, a property cannot be added to an object
once it is instantiated, and to modify a visual class, it is necessary to use
the Class Designer. However, a special case has been made to the Form designer,
where the form is subclassed to allow the creation of form properties and
methods at form design time. This feature is not available for controls.

WORKAROUND
==========

Use the Class Designer to modify the class definition of a control. For more
information about using custom objects in a Form, refer to the 'Adding User
Defined Objects' paragraph in the Visual FoxPro "Developer's Guide," Chapter 9,
"Creating Forms."

STATUS
======

This behavior is by design.

Additional query words: vFoxwin

======================================================================
Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP300
Version           : WINDOWS:3.0

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

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.