FIX: DLL that uses ATL CImage class may cause a deadlock in a process (322909)


The information in this article applies to:

  • The Microsoft Active Template Library (ATL) 7.0, when used with:
    • Microsoft Visual Studio .NET (2002), Enterprise Architect Edition
    • Microsoft Visual Studio .NET (2002), Enterprise Developer Edition
    • Microsoft Visual Studio .NET (2002), Professional Edition
    • Microsoft Visual Studio .NET (2002), Academic Edition
This article was previously published under Q322909

SYMPTOMS

A DLL that is using the Active Template Library (ATL) CImage class may cause a deadlock when it is unloaded from a process or when the loading process shuts down.

CAUSE

This problem occurs because the CImage class initializes and then shuts down GDI+ by using the static nested class CInitGDIPlus. This class initializes GDI+ before any CImage function that requires GDI+ is called. GDI+ is shut down by calling GdiplusShutdown when the CInitGDIPlus class is destructed. CInitGDIPlus is a static class that is destructed in a DLL in the context of DllMain. The documentation states that you cannot call GdiplusShutdown in DllMain.

RESOLUTION

Service pack Information

To resolve this problem, obtain the latest service pack for Microsoft Visual Studio .NET. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

837234 List of bugs that are fixed in Visual Studio .NET 2002 Service Pack 1

Hotfix information

For more information about this hotfix, click the following article number to view the article in the Microsoft Knowledge Base:

326459 COleDateTime comparison asserts or returns incorrect value

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article. This problem was first corrected in Visual Studio .NET 2002 Service Pack 1.

MORE INFORMATION

Steps to Reproduce the Behavior

  1. Create an ATL DLL project named Control_Name.htm, and then insert an ActiveX control.
  2. Add a CImage member to the ActiveX control class.
  3. Call CImage::Load in the ActiveX control class constructor.
  4. View the .htm page that you created for the control (Control_Name.htm) in Microsoft Internet Explorer.
  5. Quit Internet Explorer. You should experience one of the following conditions:
    • You cannot start Internet Explorer again.

      -or-
    • The IExplore.exe process still appears in Task Manager.
Modification Type:MinorLast Reviewed:9/27/2005
Keywords:kbHotfixServer kbQFE kbvs2002sp1sweep kbvs2002sp1fix kbbug kbfix KB322909 kbAudDeveloper
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