mmioCFClose 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.
MMIO_CF_FAILURE
The function failed. A call to mmioGetLastError might return one of the following errors:

MMIOERR_CF_NON_BND_FILE

Tried to close a non RIFF compound file.
MMIOERR_CF_ELEMENTS_OPEN
Compound-file elements are open.
MMIOERR_INTERNAL_SYSTEM
The operation failed due to an internal system error.

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