This structure contains fields for the MCI_GETDEVCAPS message.
typedef struct _MCI_GETDEVCAPS_PARMS { HWND hwndCallback; /* Window handle. */ ULONG ulReturn; /* Return information. */ ULONG ulItem; /* Additional capability. */ USHORT usMessage; /* Message ID. */ USHORT usReserved0; /* Reserved. */ } MCI_GETDEVCAPS_PARMS; typedef MCI _ GETDEVCAPS _ PARMS * PMCI _ GETDEVCAPS _ PARMS ;