typedef MCI_WAVE_OPEN_PARMSW MCI_WAVE_OPEN_PARMS;

typedef MCI_WAVE_OPEN_PARMSA MCI_WAVE_OPEN_PARMS;

typedef struct tagMCI_WAVE_OPEN_PARMS {
    DWORD   dwCallback;
    MCIDEVICEID wDeviceID;
    WORD        wReserved0;
    LPCSTR      lpstrDeviceType;
    LPCSTR      lpstrElementName;
    LPCSTR      lpstrAlias;
    DWORD       dwBufferSeconds;
} MCI_WAVE_OPEN_PARMS, FAR *LPMCI_WAVE_OPEN_PARMS;