FIX: Closing an ActiveX Control Project Crashes DevStudio

The information in this article applies to:

• The Microsoft Foundation Classes (MFC), included with: Microsoft Visual C++, 32-bit Edition, version 4.2

SYMPTOMS

When opening or closing a project in Developer Studio, you may see an access violation with the following error message:

   “MSDEV CAUSED AN INVALID PAGE FAULT IN MODULE
     MSVCRES.DLL at   0137:503126ba.”

CAUSE

This is due to a bug in the MFC 4.2 libraries.

RESOLUTION

To obtain this patch, please refer to the following article in the Microsoft Knowledge Base:

   ARTICLE_ID : Q156934
   TITLE      : PATCH: Visual C++ 4.2b Patch

The problem was fixed by adding the following line to COleControl::XOleObject::SetClientSite in the MFC source code:

   // Release existing pointer to ambient property dispinterface.
   pThis->m_ambientDispDriver.ReleaseDispatch();
   if (pClientSite != NULL)

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug was corrected in Visual C++ 4.2B patch.

MORE INFORMATION

Steps to Reproduce Problem

1. Create a new ActiveX Control using Control Wizard, and then build the control to register it.

2. Create a new MFC Control Container application, and insert this OLE control into the About box.

3. Double-click on the control to bring up the Properties window. Click on any tab of the Properties window.

4. Close the project workspace, open a new project workspace, or close Developer Studio. Note that Developer Studio crashes with a page fault message.