FIX: Problems with ToolTips on Windows 95

 Last reviewed: December 18, 1997
Article ID: Q167650
The information in this article applies to:
  • The Microsoft Foundation Classes (MFC) included with: - Microsoft Visual C++, 32-bit Editions, version 5.0

SYMPTOMS

When you run an MFC Application on Windows 95 with ComCtl32.dll version 4.00 and MFC42x.dll version 4.21.7022, the following behavior occurs.

Debug version of the application: 

   Assertion on line 383 and/or 402 in Tooltip.cpp.
   Tooltips are not displayed.
Release version of the application: 

   Tooltips are not displayed.

CAUSE

MFC 4.21 uses a new version of CommCtrl.h (version 1.2) which has modified the TOOLINFO structure. When MFC tries to add a tool to the ToolTip using this new structure, the call fails.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been corrected in Visual Studio 97 Service Pack 1.

For additional information about the Visual Studio 97 Service Pack 1, please see the following article in the Microsoft Knowledge Base: 

   ARTICLE-ID: Q170365
   TITLE     : INFO: Visual Studio 97 Service Packs - What, Where, and Why
(c) Microsoft Corporation 1997, All Rights Reserved. Contributions by Sridhar S. Madhugiri, Microsoft Corporation

Additional query words: tooltip assert

Keywords : MfcUI vcbuglist500 VS97FixlistSP3 kbprg VS97FixlistSP2 VS97FixlistSP1 kbfasttip
Technology : kbmfc
Version : 5.0
Platform : NT WINDOWS
Issue type : kbbug
Solution Type : kbfix kbservicepack

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: December 18, 1997
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.