This structure contains fields for the MCI_SET message for amp-mixer devices.
typedef struct _MCI_AMP_SET_PARMS { HWND hwndCallback; /* Window handle. */ ULONG ulTimeFormat; /* Time format. */ ULONG ulSpeedFormat; /* Speed format. */ ULONG ulAudio; /* Audio attribute flags. */ ULONG ulLevel; /* Level setting. */ ULONG ulOver; /* Delay time. */ ULONG ulItem; /* Item field. */ ULONG ulValue; /* Connector. */ } MCI_AMP_SET_PARMS; typedef MCI _ AMP _ SET _ PARMS * PMCI _ AMP _ SET _ PARMS ;