求哪位好心人帮我看下这个源代码

  /// <summary>
    /// 取得当前鼠标样式
    /// </summary>
    [StructLayout(LayoutKind.Sequential)]
    struct CURSORINFO
    {
        public int cbSize;
        public int flags;
        public IntPtr hCursor;
        public Point ptScreenPos;
    }
    [DllImport("user32.dll")]
    static extern bool GetCursorInfo(out CURSORINFO pci);
    private const int CURSOR_SHOWING = 0x00000001;

    private static Cursor vCursor;

    /// <summary>
    /// 画当前鼠标样式
    /// </summary>
    /// <param name="bmp">图像</param>
    /// <param name="x">位置 x</param>
    /// <param name="y">位置 y</param>
    public static void Record_Mouse()
    {
        CURSORINFO vCurosrInfo;
        vCurosrInfo.cbSize = Marshal.SizeOf(typeof(CURSORINFO));
        GetCursorInfo(out vCurosrInfo);
        if ((vCurosrInfo.flags & CURSOR_SHOWING) != CURSOR_SHOWING) return;
        vCursor = new Cursor(vCurosrInfo.hCursor);
    }