mmioGetData Return Value - rc

rc (USHORT) - returns

Return codes indicating success or type of failure:

MMIO_SUCCESS

If the function succeeds, 0 is returned.
MMIOERR_INVALID_HANDLE
The handle passed was not valid.
MMIOERR_INVALID_PARAMETER
An invalid parameter was passed.
MMIOERR_UNBUFFERED
The specified file is not opened for buffered I/O.
MMIOERR_READ_FAILED
A read-advance operation failed.
MMIOERR_SEEK_FAILED
A seek operation prior to a write- or read-advance operation failed.
MMIOERR_WRITE_FAILED
A write-advance operation failed.

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