typedef MCI_OVLY_OPEN_PARMSW MCI_OVLY_OPEN_PARMS;

typedef MCI_OVLY_OPEN_PARMSA MCI_OVLY_OPEN_PARMS;

typedef struct tagMCI_OVLY_OPEN_PARMS {
    DWORD   dwCallback;
    MCIDEVICEID wDeviceID;
    WORD        wReserved0;
    LPCSTR      lpstrDeviceType;
    LPCSTR      lpstrElementName;
    LPCSTR      lpstrAlias;
    DWORD       dwStyle;
    HWND        hWndParent;
    WORD        wReserved1;
} MCI_OVLY_OPEN_PARMS, FAR *LPMCI_OVLY_OPEN_PARMS;