DOCUMENT:Q185993  21-MAY-1998  [vbwin]
TITLE   :BUG: Public Friend Properties Break Binary Compatibility
PRODUCT :Microsoft Visual Basic for Windows
PROD/VER:WINDOWS:5.0
OPER/SYS:WINDOWS
KEYWORDS:kbnokeyword

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

 - Microsoft Visual Basic Learning, Professional, and Enterprise Editions
   for Windows, version 5.0
---------------------------------------------------------------------

SYMPTOMS
========

When compiling an ActiveX DLL or ActiveX EXE using Binary Compatibility,
the following error message might occur:

   <property name> in the <class name> class module has a procedure ID that
   differs from a similar declaration in the version-compatible component.

This problem occurs even if you have not modified any interface within the
ActiveX Server.

CAUSE
=====

When descriptions are added to a Let property declared as Friend and having
a corresponding Public Get property, the above error message might occur
during compilation.

RESOLUTION
==========

Using Notepad.exe (or a similar text editor), edit each .cls file that
matches the scenario above. Remove all VB_Description tags within property
functions that have a "Public" Get and a "Friend" Let.

The following is an example of a VB_Description tag:

   Attribute SetName.VB_Description = "Set the Name Of the Object"

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed
at the beginning of this article. We are researching this bug and will post
new information here in the Microsoft Knowledge Base as it becomes
available.

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

Using the Visual Basic Class Builder Utility Add-In, you have the option of
adding "Descriptions" to properties of the ActiveX Server object that is
being developed. These descriptions are useful in tools such as the Object
Browser, when other programmers are using the ActiveX Servers in their
projects.

After the Visual Basic Class Builder Utility builds the class, it is common
to modify the function stubs generated to suit the purpose of the class.
When descriptions are added to a Let property declared as "Friend" and
having a corresponding "Public" Get property, the above error message might
occur during compilation.

REFERENCES
==========

Books Online for Microsoft Visual Basic, version 5.0

Additional query words: kbDSupport kbdss vb6test
======================================================================
Keywords          : kbnokeyword
Version           : WINDOWS:5.0
Platform          : WINDOWS
Issue type        : kbbug
Solution Type     : kbpending

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

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.

Copyright Microsoft Corporation 1998.