ulShutDownValue (ULONG) - input

      Flag indicating the shutdown value.

      Possible values are described in the following list:

    • Perform full system shutdown and file-system lock.
    • Perform buffer and cache flushing to make system quiescent.

    ulrc (APIRET) - returns

      Return Code.

      DosShutdown returns one of the following values:

    • NO_ERROR 87
        ERROR_INVALID_PARAMETER
      274
        ERROR_ALREADY_SHUTDOWN
      For a full list of error codes, see Errors.

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