Registrations are now open. Join us today!
There is still a lot of work to do on the wiki yet! More information about editing can be found here.
Already have an account?

Microsoft KB Archive/173027

From BetaArchive Wiki
Knowledge Base


Article ID: 173027

Article Last Modified on 11/21/2006



APPLIES TO

  • Microsoft Foundation Class Library 4.2, when used with:
    • Microsoft Visual C++ 4.0 Standard Edition
    • Microsoft Visual C++ 4.0 Standard Edition
    • Microsoft Visual C++ 4.1 Subscription



This article was previously published under Q173027

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

Keywords: kbbug kbfix kbvc420fix kbdocview KB173027