PRB: BSTR Redefinition If SHLOBJ.H Included in MFC Apps

Last reviewed: September 29, 1995
Article ID: Q132966

The information in this article applies to:

Microsoft Win32 Application Programming Interface (API) included with:
```
    - Microsoft Windows 95 version 4.0
```

SYMPTOMS

When you include SHLOBJ.H in an MFC application, the following compiler error occurs:

   error C2371: 'BSTR' : redefinition

CAUSE

The SDK header file OAIDL.H and the MFC library both define a type BSTR.

RESOLUTION

To work around this problem, add the following definition before including any MFC headers. In an AppWizard-generated application this can be done at the beginning of the STDAFX.H include file:

   #define _AFX_NO_BSTR_SUPPORT

Additional reference words: MFC BSTR 4.00 Windows 95
KBCategory: kbui kbprb
KBSubcategory: UsrShell

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.

Last reviewed: September 29, 1995
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.