hFile (HFILE) - input

      File handle used in the DosSetFileLocks function that is to be cancelled.

    pflLock (PFILELOCK) - input

      Address of the structure describing the region to be locked by DosSetFileLocks.

    ulrc (APIRET) - returns

      Return Code.

      DosCancelLockRequest returns one of the following values:

    • NO_ERROR 6
        ERROR_INVALID_HANDLE
      87
        ERROR_INVALID_PARAMETER
      173
        ERROR_CANCEL_VIOLATION
      For a full list of error codes, see Errors.

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