typedef struct tagMCI_OPEN_PARMSW {
    DWORD_PTR   dwCallback;
    MCIDEVICEID wDeviceID;
    LPCWSTR    lpstrDeviceType;
    LPCWSTR    lpstrElementName;
    LPCWSTR    lpstrAlias;
} MCI_OPEN_PARMSW, *PMCI_OPEN_PARMSW, *LPMCI_OPEN_PARMSW;

typedef LPMCI_OPEN_PARMSW LPMCI_OPEN_PARMS;