Function winapi::um::shellapi::SHGetDiskFreeSpaceExW

pub unsafe extern "system" fn SHGetDiskFreeSpaceExW(
    pszDirectoryName: LPCWSTR, 
    pulFreeBytesAvailableToCaller: *mut ULARGE_INTEGER, 
    pulTotalNumberOfBytes: *mut ULARGE_INTEGER, 
    pulTotalNumberOfFreeBytes: *mut ULARGE_INTEGER
) -> BOOL