mmioCFCopy 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 file name was null or tried to copy the file to itself.
MMIOERR_READ_ONLY_FILE
The RIFF compound file is opened as read-only.
MMIO_CF_FAILURE
The operation failed due to an internal system error. A call to mmioGetLastError might return one of the following errors:

MMIOERR_CF_ELEMENTS_OPEN

Compound-file elements are open.
MMIOERR_NO_CORE
Not enough memory is available.
MMIOERR_INTERNAL_SYSTEM
The operation failed due to an internal system error.

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