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Q138437: PRB: File Does Not Appear to Be a Valid OLE Control

Article: Q138437
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0
Operating System(s): 
Keyword(s): kb3rdparty
Last Modified: 11-FEB-2000

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The information in this article applies to:

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

When you use Accusoft's Image Format Library .OCX with Visual FoxPro and attempt
to register added controls, you receive this error:

  The file does not appear to be a valid OLE control

After you clear the first error message, you may receive this additional error
message:

  Unable to register the OLE control.

Using this .OCX control in Microsoft Visual C++ or Microsoft Access works fine.

Accusoft's Image Control Library .OCX is manufactured by Accusoft, a vendor
independent of Microsoft; we make no warranty, implied or otherwise, regarding
this product's performance or reliability.

CAUSE
=====

Accusoft's Image Control Library .OCX is a 16-bit .OCX rather than a 32-bit OCX.
Accusoft has also released a 32-bit version of this library. For more
information about this control, you can contact Accusoft at (508) 898-2770.


RESOLUTION
==========

There are three requirements for an .OCX to work correctly with Visual FoxPro:

- The OCX control must be 32-bit.

- A control which supports data binding will not be able to bind to a Visual
  FoxPro field or table.

- Visual FoxPro does not support the ISimpleFrameSite interface. Controls which
  use this interface may have limited functionality within Visual FoxPro.

STATUS
======

This behavior is by design.


Additional query words: VFoxWin

======================================================================
Keywords          : kb3rdparty 
Technology        : kbVFPsearch kbAudDeveloper kbVFP300
Version           : WINDOWS:3.0

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

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