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PRB: Error Message "Cannot insert object" in Excel

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The following error message appears when you attempt to use your Visual C++ control in Microsoft Excel 97, Microsoft Excel 2000, or Microsoft Excel 2002:
Cannot insert object

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This error occurs if you created a control in Visual C++, manually changed the _wVerMajor and/or _wVerMinor variables, and didn't change the corresponding type library version number in the .odl file of your project. This occurs because Excel 97, Excel 2000, and Excel 2002 explicitly check to see if these two variables are equivalent in the registry.

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To resolve this problem, you either have to change the version() attribute in your .odl file to reflect the current state of the _wVerMajor and _wVerMinor variables at compile-time, or specifically modify the registry entry HKCR\TypeLib\<Your TypeLib>\X.Y, where X and Y represent your major and minor version numbers respectively.

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This behavior is by design.

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More information

Steps to Reproduce Behavior

  1. Create a new MFC ActiveX ControlWizard project, and click Finish.
  2. Open your <ProjectName>.cpp file, and find the variables _wVerMajor and _wVerMinor.
  3. Change the _wVerMajor variable to 3.
  4. Compile the project.
  5. Open Excel.
  6. Try to insert your control using the Object option under the Insert menu, or, click Toolbars on the View menu, and click to select the Control Toolbox option to display that toolbar. On that toolbar, click the "more controls" button and find your control in the list box. Click it, and then draw your control on the worksheet.
  7. The "Cannot insert object" error message appears.

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For more information about the wVerMajor or wVerMinor global constants, search for "wVerMajor" or "wVerMinor" in Visual C++ Help.

For more information about ODL (Object Description Language) files and the version() attribute, search for "ODL" or "ODL Attributes" in Visual C++ Help.

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Keywords: kberrmsg, kbprb, KB171280

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Article Info
Article ID : 171280
Revision : 7
Created on : 1/20/2007
Published on : 1/20/2007
Exists online : False
Views : 454