mmioCFAddEntry Return Value - rc

rc (ULONG) - returns

Return codes indicating success or type of failure:

MMIO_CF_SUCCESS

If the function succeeds, 0 is returned.
MMIOERR_INVALID_HANDLE
The handle passed was not valid.
MMIOERR_INVALID_PARAMETER
The parameter passed was not correct. For this function, a pmmctocentry NULL is invalid.
MMIOERR_READ_ONLY_FILE
The RIFF compound-file is opened as read-only.
MMIO_CF_FAILURE
The function failed. A call to mmioGetLastError might return one of the following errors:

MMIOERR_CF_DUPLICATE_SEEN

The requested entry already exists. This means that the element name is already defined in another CTOC entry.
MMIOERR_NO_CORE
Not enough memory is available.
MMIOERR_INTERNAL_SYSTEM
The operation failed due to an internal system error.

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