BUG: DuplicateHandle for Console Handles Ignores Inherit Param

ID: Q175476

The information in this article applies to:

• Microsoft Win32 Application Programming Interface (API) included with: - Microsoft Windows NT versions 3.5, 3.51, 4.0

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          : kbConsole kbKernBase kbGrpKernBase 
Version           : WINNT:3.50,3.51,4.0
Platform          : winnt
Hardware          : x86
Issue type        : kbbug

Last Reviewed: November 22, 1998