typedef struct tagMCI_SYSINFO_PARMSW {
    DWORD_PTR   dwCallback;
    LPWSTR      lpstrReturn;
    DWORD       dwRetSize;
    DWORD       dwNumber;
    UINT        wDeviceType;
} MCI_SYSINFO_PARMSW, *PMCI_SYSINFO_PARMSW, * LPMCI_SYSINFO_PARMSW;

typedef LPMCI_SYSINFO_PARMSW LPMCI_SYSINFO_PARMS;