This structure contains fields for the MCI_SET message for devices that do not have device-specific extensions.
typedef struct _MCI_SET_PARMS { HWND hwndCallback; /* Window handle. */ ULONG ulTimeFormat; /* Time format. */ ULONG ulSpeedFormat; /* Speed format. */ ULONG ulAudio; /* Channel number. */ ULONG ulLevel; /* Volume level. */ ULONG ulOver; /* Delay time. */ ULONG ulItem; /* Item field. */ ULONG ulValue; /* Value for item flag. */ } MCI_SET_PARMS; typedef MCI _ SET _ PARMS * PMCI _ SET _ PARMS ;