FIX: A stack overflow occurs when MFC ActiveX control containers enter a state of infinite recursion in Visual C++

This article was previously published under Q192942
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Under certain circumstances, MFC ActiveX control containers will enter a state of infinite recursion that eventually leads to a stack overflow. The symptoms of this are when the position of a control site changes, the program will seemingly hang and eventually produce a stack overflow (0xC00000FD) operating system exception. The stack trace looks like this:
   COleControlSite::MoveWindow   COleControl::XOleInPlaceObject::SetObjectRects   COleControl::OnSetObjectRects   COleControlSite::MoveWindow   ...				
When the position of the control site changes, the container code changes the position of the reflector window (if present) and the tracker rectangles (if present). The control container code eventually calls COleControl::XOleInPlaceObject::SetObjectRects. (See CTLINPLC.CPP in the MFC source.) SetObjectRects() makes a call to GetOuterWindow(), which returns the reflector window if present. If the reflector window variable is NULL then the same window object is returned, MoveWindow is then called using the returned window object. This causes MoveWindow to be called on itself, resulting in a recursive loop.
One workaround is to copy the Visual C++ 5.0 version of the MFC42.DLL (File version: 4.21.7303) to the home directory of the program experiencing this problem. This will cause the program to use the older version of MFC, instead of the MFC42.DLL that is located in the Windows system directory.
Microsoft has confirmed this to be a bug in the Microsoft products listed in this article. This bug has been fixed in the Visual Studio 6.0 Service Pack 1.

To obtain this service pack, visit the following Microsoft Web site: For more information about Visual Studio 6.0 Service Pack 1, click the following article numbers to view the articles in the Microsoft Knowledge Base:
193009 Visual Studio 6.0 Service Pack 1 Readme
194022 Visual Studio 6.0 service packs, what, where, why
194295 How to tell that a Visual Studio service pack is installed
This bug has been found in WordPerfect 8 that ships as part of Corel Office Suite 8. This bug occurs only with the Visual C++ 6.0 version of the MFC42.DLL.

Article ID: 192942 - Last Review: 02/23/2014 01:10:59 - Revision: 5.2

Microsoft Foundation Class Library 4.2

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