This message is sent to an IOProc by mmioClose to request that a file be closed.

pmmioinfo (PMMIOINFO)

A pointer to an MMIOINFO data structure.

usMsg (USHORT)

Set to MMIOM_CLOSE.

lParam1 (LONG)

The usFlags parameter of mmioClose.

lParam2 (LONG)

This parameter is not used.

rc (ULONG)

Return codes indicating success or failure:

MMIO_SUCCESS

The specified file was closed successfully.
MMIO_ERROR
An error code is returned.
MMIO_WARNING
The file was closed, but the IOProc expected additional data.

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