FIX: CRichEditView as Second Splitter Pane Causes Crash

• The Microsoft Foundation Classes (MFC), included with:
  • Microsoft Visual C++, 32-bit Editions, versions 4.0, 4.0a, 4.1

SYMPTOMS

If an MFC program uses a CRichEditDoc and a CRichEditView is not the first pane of a splitter window, an access violation occurs when you start the program.

CAUSE

MFC's CRichEditDoc::GetView always assumes the first view of the active frame window is a CRichEditView. The pointer is returned and used as a CRichEditView object even though it may not be. The crash occurs when you use a data member or function specific to CRichEditView.

RESOLUTION

Since GetView is not virtual, it cannot be overriden. When using Visual C++ 4.0 or 4.1, make sure that the first pane is a CRichEditView.

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 the Microsoft Foundation Classes version 4.2 and shipped with Visual C++ version 4.2.

MORE INFORMATION

When a CRichEditView is specified during the creation of an MFC program using AppWizard, a CRichEditDoc derived class is created for the program. When the rich edit view is initially displayed, the framework calls CRichEditDoc::SetTitle to update the frame window's title. However, SetTitle calls GetView, which returns the first view in the view list.

(c) Microsoft Corporation 1997, All Rights Reserved. Contributions by Adam Kim, Microsoft Corporation

Additional query words:

Keywords : kbDocView kbMFC kbVC kbVC400bug kbVC410bug kbVC420fix
Version : WINDOWS NT:4.0,4.0a,4.1
Platform : NT WINDOWS
Issue type : kbbug