Microsoft KB Archive/175476

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BUG: DuplicateHandle for Console Handles Ignores Inherit Param

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Q175476

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The information in this article applies to:


 * Microsoft Win32 Application Programming Interface (API), used with:
 * the operating system: Microsoft Windows NT, versions 3.5, 3.51, 4.0

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SYMPTOMS
Console handles created with the DuplicateHandle API do not receive the inherit attribute specified in the DuplicateHandle call. This applies to console handles originally created with the CreateFile API.

CAUSE
When duplicating console handles, DuplicateHandle does not give the resulting handle the inheritance parameter specified in the call. Instead the inheritance property of the parent handle is passed on to the created handle.

RESOLUTION
To create a console handle with a desired inherence, you can call CreateFile multiple times. Each call creates a handle with the inheritance specified in the security attributes structure passed in the CreateFile call.

STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

Additional query words:

Keywords : kbAPI kbConsole kbKernBase kbDSupport kbGrpDSKernBase

Issue type : kbbug

Technology : kbAudDeveloper kbWin32sSearch kbWin32API