class ButtonClickInfo
    {
        public int x, y;
        public ButtonClickInfo(int x, int y)
        {
            this.x = x; this.y = y;
        }
    }
    class Program
    {
        delegate void OnClickDelegate(ButtonClickInfo e);
        static void OnClick(ButtonClickInfo e)
        {
            Console.WriteLine(e.x + "," + e.y);
        }
        static void Main(string[] args)
        {
            OnClickDelegate handler = OnClick;
            handler(new ButtonClickInfo(123, 321));
            Console.ReadLine();
        }
    }