CreateFile() Using CONOUT$ or CONIN$

Last reviewed: December 16, 1996
Article ID: Q90088

The information in this article applies to:

Microsoft Win32 Application Programming Interface (API) included with:

    - Microsoft Windows NT versions 3.1, 3.5, 3.51, and 4.0
    - Microsoft Windows 95 version 4.0

If you attempt to open a console input or output handle by calling the CreateFile() function with the special CONIN$ or CONOUT$ filenames, this call will return INVALID_HANDLE_VALUE if you do not use the proper sharing attributes for the fdwShareMode parameter in your CreateFile() call. Be sure to use FILE_SHARE_READ when opening "CONIN$" and FILE_SHARE_WRITE when opening "CONOUT$".

KBCategory: kbprg
KBSubcategory: BseFileio
Additional reference words: 3.10 3.50 3.51 4.00 95

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Last reviewed: December 16, 1996
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