写的wpf的第一个窗口类

/*  
 * User: Administrator
 * Date: 2007-11-16 Time: 14:54
 */

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


namespace wpftest
{
    /// <summary>
    /// Description of cxyWin.
    /// </summary>
    public class cxyWin:Window
    {
        public cxyWin()
        {
            Title="grow and shrink test";
            WindowStartupLocation= WindowStartupLocation.CenterScreen;
            Height=400;
            Width=400;
            this.WindowStyle= WindowStyle.ThreeDBorderWindow;//显示控件按钮
            //this.ResizeMode= ResizeMode.NoResize;//禁止resize
            this.WindowState= WindowState.Maximized;//窗口状态
        }
        
        protected override void OnTextInput(TextCompositionEventArgs e)
        {
            //在输入字符串时,显示输入的字符串在标题栏上
            base.OnTextInput(e);
            if(e.Text=="\b" && Title.Length>0)//回退字符时删除字符
            {
                Title=Title.Substring(0,Title.Length-1);
                
            }
            else if(!char.IsControl(e.Text[0]))
            {
                Title=Title+e.Text;
            }
        }
        
        protected override void OnKeyDown(KeyEventArgs e)
        {
            base.OnKeyDown(e);
            //调整窗口的位置,可以多加代码调整窗体的大小
             
            if(e.Key== Key.Up)
            {
                Left-=Width*0.05;
                Top-=Height*0.05;                
                 
            }
            if(e.Key== Key.Down)
            {
                Left+=Width*0.05;
                Top+=Height*0.05;
            }
     
        }
        
    }
}