KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q192647: INFO: Visual Basic Reserves OCX Resource IDs Starting at 30000

Article: Q192647
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:5.0,6.0
Operating System(s): 
Keyword(s): kbGrpDSVB
Last Modified: 11-JAN-2001

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

- Microsoft Visual Basic Learning Edition for Windows, versions 5.0, 6.0 
- Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0 
- Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0 
-------------------------------------------------------------------------------

SUMMARY
=======

In accordance with the specifications for building and exposing ActiveX
controls, Visual Basic uses a resource file to store the toolbox bitmaps for
each UserControl in a compiled OCX. Design-time clients can then load and
display these bitmap images in a "control toolbox" without having to load or
create running instances of these controls.

By default, Visual Basic stores these images with a base resource identifier
starting at 30000. Consequently, when adding your own resource file to a Visual
Basic ActiveX control project, you should avoid using resource IDs that might
conflict with these values.

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

The toolbox image resource ID for a UserControl is registered on the system in
the ToolboxBitmap32 registry key under the CLSID for the control.

REFERENCES
==========

"Working with Resource Files" in the Visual Basic 6.0 Online Help

"More About Programming: Working with Resource Files" in the Visual Basic 5.0
Books Online

Additional query words: kbDSupport kbDSD kbVBp kbVBp500 kbVBp600 kbCtrlCreate kbActiveX

======================================================================
Keywords          : kbGrpDSVB 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVBA500 kbVBA600 kbVB500 kbVB600
Version           : WINDOWS:5.0,6.0
Issue type        : kbinfo

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

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.