typedef MCI_OPEN_PARMSW MCI_OPEN_PARMS;

typedef MCI_OPEN_PARMSA MCI_OPEN_PARMS;

typedef struct tagMCI_OPEN_PARMS {
    DWORD       dwCallback;
    MCIDEVICEID wDeviceID;
    WORD        wReserved0;
    LPCSTR      lpstrDeviceType;
    LPCSTR      lpstrElementName;
    LPCSTR      lpstrAlias;
} MCI_OPEN_PARMS, FAR *LPMCI_OPEN_PARMS;