Routed Input Events(2) 译

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
namespace WpfApplication2
{
    /// <summary>
    /// App.xaml 的交互逻辑
    /// </summary>
    public partial class App : Application
    {
        static readonly FontFamily fontfam = new FontFamily("Lucida Console");
        const string strFormat = "{0,-30} {1,-15} {2,-15} {3,-15}";
        StackPanel stackOutput;
        DateTime dtlast=DateTime.Now;
        [STAThread]
        public static void main()
        {
            App app = new App();
            app.Run();
        }
        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);

            Window win = new Window();
            win.Title = "Examine Routed Enents";

            Grid grid = new Grid();
            win.Content = grid;

            RowDefinition rowdef = new RowDefinition();
            rowdef.Height = GridLength.Auto;
            grid.RowDefinitions.Add(rowdef);

            rowdef = new RowDefinition();
            rowdef.Height = GridLength.Auto;
            grid.RowDefinitions.Add(rowdef);

            rowdef = new RowDefinition();
            rowdef.Height = new GridLength(100, GridUnitType.Star);
            grid.RowDefinitions.Add(rowdef);

            Button btn = new Button();
            
            btn.HorizontalAlignment = HorizontalAlignment.Center;
            btn.Margin = new Thickness(24);
            btn.Padding = new Thickness(24);
            grid.Children.Add(btn);


            TextBlock text = new TextBlock();
            text.FontSize = 24;
            text.Text = win.Title;

            btn.Content = text;

            TextBlock textHeadings = new TextBlock();
            textHeadings.FontFamily = fontfam;
            textHeadings.Inlines.Add(new Underline(new Run(String.Format(strFormat,"Routed Event","sender","Source","OriginalSource"))));

            grid.Children.Add(textHeadings);
            Grid.SetRow(textHeadings,1);

            ScrollViewer scroll = new ScrollViewer();
            grid.Children.Add(scroll);

            Grid.SetRow(scroll,2);

            stackOutput = new StackPanel();
            scroll.Content = stackOutput;

            UIElement[] els = { win,grid,btn,text};
            foreach(UIElement el in els )
            {
                //键盘

                el.PreviewKeyDown += AllPurposeEventHandler;
                el.PreviewKeyUp += AllPurposeEventHandler;
                el.PreviewTextInput += AllPurposeEventHandler;
                el.KeyDown += AllPurposeEventHandler;
                el.KeyUp += AllPurposeEventHandler;
                el.TextInput += AllPurposeEventHandler; 
                //鼠标
                el.MouseDown += AllPurposeEventHandler;
                el.MouseUp += AllPurposeEventHandler;
                el.PreviewMouseDown += AllPurposeEventHandler;
                el.PreviewMouseUp += AllPurposeEventHandler;
                //click
                el.AddHandler(Button.ClickEvent,new RoutedEventHandler(AllPurposeEventHandler));
            }
            win.Show();
        }
        void AllPurposeEventHandler(object sender, RoutedEventArgs args)
        {
            DateTime dtnow = DateTime.Now;
            if (dtnow - dtlast > TimeSpan.FromMilliseconds(1000))
            {
                stackOutput.Children.Add(new TextBlock(new Run(" ")));}


                dtlast = dtnow;
                TextBlock text = new TextBlock();
                text.FontFamily = fontfam;
                text.Text = string.Format(strFormat,args.RoutedEvent.Name,TypeWithoutNamespace(sender),TypeWithoutNamespace(args.Source),TypeWithoutNamespace(args.OriginalSource));
                stackOutput.Children.Add(text);
                (stackOutput.Parent as ScrollViewer).ScrollToBottom();
            
        }
        string TypeWithoutNamespace(object obj)
        {
            string[] astr = obj.GetType().ToString().Split('.');
            return astr[astr.Length-1];
        }

    }
}