FIX: Closing an ActiveX Control Project Crashes DevStudio (157893)


The information in this article applies to:

  • The Microsoft Foundation Classes (MFC), when used with:
    • Microsoft Visual C++, 32-bit Enterprise Edition 4.2
    • Microsoft Visual C++, 32-bit Professional Edition 4.2
This article was previously published under Q157893

SYMPTOMS

When opening or closing a project in Developer Studio, you may see an access violation with the following error message: 
   [ASCII 147]MSDEV CAUSED AN INVALID PAGE FAULT IN MODULE
     MSVCRES.DLL at   0137:503126ba.[ASCII 148]
This behavior occurs if the Properties window for a ControlWizard- generated ActiveX Control is invoked in the dialog editor.

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:

156934 Visual C++ 4.2b Patch

The problem occurs because IOleObject::SetClientSite(NULL) does not release its existing pointer to ambient property interface. For example, COleControl::XOleObject::SetClientSite(NULL) doesn[ASCII 146]t call pThis->m_ambientDispDriver.ReleaseDispatch();.

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.
If you have an existing project that has a Control Wizard-generated control built with Visual C++ 4.2 in a dialog resource, click on the [ASCII 147]Control[ASCII 148] tab in the Properties window for the control, and then close the project, open a new project, or close Developer Studio.
Modification Type:MajorLast Reviewed:11/18/2003
Keywords:kbBug kbCtrl kbfix KB157893
©2003 Microsoft Corporation. All rights reserved.