wpf学习delegate windows事件

using System;
using System.Windows;
using System.Windows.Input;



namespace wpftest
{
    /**//// <summary>
    /// Description of Class1.
    /// </summary>
    public class Class1
    {
        public Class1()
        {
        }
        [STAThread]
        public static void Main()
        {
            Window win=new Window();
            win.Title="hello wpf";
            win.Show();
            
            win.MouseDown+= new MouseButtonEventHandler(onwinmousedonw);
            
            Application app=new Application();
            app.Run(win);
        }
        
        static void onwinmousedonw(object sender,MouseButtonEventArgs  args)
        {
            Window bb=sender as Window;
            string template="windows mouse {0} click at point{1} ";    
            string msg=string.Format(template,args.ChangedButton,args.GetPosition(bb));
            MessageBox.Show(msg,bb.Title);
            
        }
    }
}