wpf jumplist demo

直接上代碼。

/// <summary>
/// MainWindow.xaml 的交互邏輯
/// </summary>
public partial class MainWindow : Window
{
	[DllImport("user32.dll", CharSet = CharSet.Auto)]
	public static extern int RegisterWindowMessage(string msg);

	private HwndSource _HwndSource = null;
	private IntPtr _Handler = IntPtr.Zero;

	private readonly int Message1 = RegisterWindowMessage("Message_1");
	private readonly int Message2 = RegisterWindowMessage("Message_2");
	private readonly int Message3 = RegisterWindowMessage("Message_3");

	public MainWindow()
	{
		InitializeComponent();

		this.SourceInitialized += new EventHandler(MainWindow_SourceInitialized);
		this.Loaded += new RoutedEventHandler(MainWindow_Loaded);
	}

	void MainWindow_Loaded(object sender, RoutedEventArgs e)
	{
		this.LoadJumpList(); 
	}

	void MainWindow_SourceInitialized(object sender, EventArgs e)
	{
		this._HwndSource = PresentationSource.FromVisual((Visual)sender) as HwndSource;
		this._Handler = this._HwndSource.Handle;
		this._HwndSource.AddHook(this.WindowProc);
	}

	public IntPtr WindowProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
	{
		if (msg == Message1)
		{
			MessageBox.Show("Message_1");
		}
		else if (msg == Message2)
		{
			MessageBox.Show("Message_2");
		}
		else if (msg == Message3)
		{
			MessageBox.Show("Message_3");
		}
		return IntPtr.Zero;
	}

	private void LoadJumpList()
	{
		JumpList jumpList = JumpList.GetJumpList(Application.Current);
		if (jumpList != null
			   && jumpList.JumpItems != null
			   && jumpList.JumpItems.Count > 0)
			jumpList.JumpItems.Clear();

		JumpTask jtNotpad = new JumpTask()
		{
			ApplicationPath = "notepad.exe",
			CustomCategory = "工具",
			Description = "記事本",
			Title = "記事本",
			IconResourcePath = "notepad.exe",
			IconResourceIndex = 0
		};
		JumpTask jtMsPaint = new JumpTask()
		{
			ApplicationPath = "mspaint.exe",
			CustomCategory = "工具",
			Description = "畫圖",
			Title = "畫圖",
			IconResourcePath = "mspaint.exe",
			IconResourceIndex = 0
		};
		JumpTask jtCalc = new JumpTask()
		{
			ApplicationPath = "calc.exe",
			CustomCategory = "工具",
			Description = "計算器",
			Title = "計算器",
			IconResourcePath = "calc.exe",
			IconResourceIndex = 0
		};

		int windowInt = this._Handler.ToInt32();
		JumpTask jtMessage1 = new JumpTask()
		{
			CustomCategory = "Message",
			Description = "Message1",
			Title = "Message1",
			ApplicationPath = Assembly.GetEntryAssembly().CodeBase,
			Arguments = windowInt + " " + Message1
		};
		JumpTask jtMessage2 = new JumpTask()
		{
			CustomCategory = "Message",
			Description = "Message2",
			Title = "Message2",
			ApplicationPath = Assembly.GetEntryAssembly().CodeBase,
			Arguments = windowInt + " " + Message2
		};
		JumpTask jtMessage3 = new JumpTask()
		{
			CustomCategory = "Message",
			Description = "Message3",
			Title = "Message3",
			ApplicationPath = Assembly.GetEntryAssembly().CodeBase,
			Arguments = windowInt + " " + Message3
		};

		if (jumpList == null)
			jumpList = new JumpList();
		jumpList.JumpItems.Add(jtNotpad);
		jumpList.JumpItems.Add(jtMsPaint);
		jumpList.JumpItems.Add(jtCalc);
		jumpList.JumpItems.Add(jtMessage1);
		jumpList.JumpItems.Add(jtMessage2);
		jumpList.JumpItems.Add(jtMessage3);

		jumpList.ShowFrequentCategory = true;
		jumpList.ShowRecentCategory = true;
		jumpList.Apply();
		this.ShowInTaskbar = true;
	}
}

    /// <summary>
    /// App.xaml 的交互邏輯
    /// </summary>
    public partial class App : Application
    {
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);

        public App()
        {
            string[] args = Environment.GetCommandLineArgs();

            if (args.Length == 3)
            {
                //處理JumpList自定義按鈕操作
                int handler = Int32.Parse(args[1]);
                uint msg = UInt32.Parse(args[2]);
                if (handler != 0 && msg != 0)
                {
                    SendMessage((IntPtr)handler, msg, IntPtr.Zero, IntPtr.Zero);
                }
                Application.Current.Shutdown();
                return;
            }
        }
    }