hmmcf (HMMCF) - input

      A pointer to a user-supplied buffer that contains the modified CTOC header. A RIFF compound-file handle is returned by mmioCFOpen.

    pmmcfinfo (PMMCFINFO) - input

      A pointer to the MMCFINFO data structure that contains the modified CTOC header. This buffer was filled in by mmioCFGetInfo and then modified by the user.

    cBytes (ULONG) - input

      Size of the buffer that the pmmcfinfo parameter points to. This is the maximum number of bytes that will be copied.

    rc (ULONG) - returns

      Return codes indicating success or type of failure. If the function succeeds, the number of bytes copied is returned. A NULL is returned for a failure. A call to mmioGetLastError might return one of the following errors:

      MMIOERR_INVALID_PARAMETER

        For this function, a NULL pmmcfinfo is invalid. cBytes must be greater than 0.
      MMIOERR_READ_ONLY_FILE
        File not opened in write mode.
      MMIOERR_INTERNAL_SYSTEM
        The operation failed due to an internal system error.

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