创建基于系统托盘的WPF程序

最近都没怎么接触WPF了，闲来无事为以前做的WPF DEMO添加托盘管理。 

http://www.cnblogs.com/leeolevis/archive/2010/07/14/1777658.html 

其中，主要添加了NotificationAreaIcon类，代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows;
using System.Windows.Input;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Threading;
using Drawing = System.Drawing;
using Forms = System.Windows.Forms;

namespace WpfApplication1
{
    /// <summary>
    /// Represents a thin wrapper for <see cref="Forms.NotifyIcon"/>
    /// </summary>
    [ContentProperty("Text")]
    [DefaultEvent("MouseDoubleClick")]
    public class NotificationAreaIcon : FrameworkElement
    {
        Forms.NotifyIcon notifyIcon;

        public static readonly RoutedEvent MouseClickEvent = EventManager.RegisterRoutedEvent(
            "MouseClick", RoutingStrategy.Bubble, typeof(MouseButtonEventHandler), typeof(NotificationAreaIcon));

        public static readonly RoutedEvent MouseDoubleClickEvent = EventManager.RegisterRoutedEvent(
            "MouseDoubleClick", RoutingStrategy.Bubble, typeof(MouseButtonEventHandler), typeof(NotificationAreaIcon));

        public static readonly DependencyProperty IconProperty =
            DependencyProperty.Register("Icon", typeof(ImageSource), typeof(NotificationAreaIcon));

        public static readonly DependencyProperty TextProperty =
            DependencyProperty.Register("Text", typeof(string), typeof(NotificationAreaIcon));

        public static readonly DependencyProperty FormsContextMenuProperty =
            DependencyProperty.Register("MenuItems", typeof(List<Forms.MenuItem>), typeof(NotificationAreaIcon), new PropertyMetadata(new List<Forms.MenuItem>()));

        protected override void OnInitialized(EventArgs e)
        {
            base.OnInitialized(e);

            // Create and initialize the window forms notify icon based
            notifyIcon = new Forms.NotifyIcon();
            notifyIcon.Text = Text;
            if (!DesignerProperties.GetIsInDesignMode(this))
            {
                notifyIcon.Icon = FromImageSource(Icon);
            }
            notifyIcon.Visible = FromVisibility(Visibility);

            if (this.MenuItems != null && this.MenuItems.Count > 0)
            {
                notifyIcon.ContextMenu = new System.Windows.Forms.ContextMenu(this.MenuItems.ToArray());
            }

            notifyIcon.MouseDown += OnMouseDown;
            notifyIcon.MouseUp += OnMouseUp;
            notifyIcon.MouseClick += OnMouseClick;
            notifyIcon.MouseDoubleClick += OnMouseDoubleClick;

            Dispatcher.ShutdownStarted += OnDispatcherShutdownStarted;
        }

        private void OnDispatcherShutdownStarted(object sender, EventArgs e)
        {
            notifyIcon.Dispose();
        }

        private void OnMouseDown(object sender, Forms.MouseEventArgs e)
        {
            OnRaiseEvent(MouseDownEvent, new MouseButtonEventArgs(
                InputManager.Current.PrimaryMouseDevice, 0, ToMouseButton(e.Button)));
        }

        private void OnMouseUp(object sender, Forms.MouseEventArgs e)
        {
            OnRaiseEvent(MouseUpEvent, new MouseButtonEventArgs(
                InputManager.Current.PrimaryMouseDevice, 0, ToMouseButton(e.Button)));
        }

        private void OnMouseDoubleClick(object sender, Forms.MouseEventArgs e)
        {
            OnRaiseEvent(MouseDoubleClickEvent, new MouseButtonEventArgs(
                InputManager.Current.PrimaryMouseDevice, 0, ToMouseButton(e.Button)));
        }

        private void OnMouseClick(object sender, Forms.MouseEventArgs e)
        {
            OnRaiseEvent(MouseClickEvent, new MouseButtonEventArgs(
                InputManager.Current.PrimaryMouseDevice, 0, ToMouseButton(e.Button)));
        }

        private void OnRaiseEvent(RoutedEvent handler, MouseButtonEventArgs e)
        {
            e.RoutedEvent = handler;
            RaiseEvent(e);
        }

        public List<Forms.MenuItem> MenuItems
        {
            get { return (List<Forms.MenuItem>)GetValue(FormsContextMenuProperty); }
            set { SetValue(FormsContextMenuProperty, value); }
        }

        public ImageSource Icon
        {
            get { return (ImageSource)GetValue(IconProperty); }
            set { SetValue(IconProperty, value); }
        }

        public string Text
        {
            get { return (string)GetValue(TextProperty); }
            set { SetValue(TextProperty, value); }
        }

        public event MouseButtonEventHandler MouseClick
        {
            add { AddHandler(MouseClickEvent, value); }
            remove { RemoveHandler(MouseClickEvent, value); }
        }

        public event MouseButtonEventHandler MouseDoubleClick
        {
            add { AddHandler(MouseDoubleClickEvent, value); }
            remove { RemoveHandler(MouseDoubleClickEvent, value); }
        }

        #region Conversion members

        private static Drawing.Icon FromImageSource(ImageSource icon)
        {
            if (icon == null)
            {
                return null;
            }
            Uri iconUri = new Uri(icon.ToString());
            return new Drawing.Icon(Application.GetResourceStream(iconUri).Stream);
        }

        private static bool FromVisibility(Visibility visibility)
        {
            return visibility == Visibility.Visible;
        }

        private MouseButton ToMouseButton(Forms.MouseButtons button)
        {
            switch (button)
            {
                case Forms.MouseButtons.Left:
                    return MouseButton.Left;
                case Forms.MouseButtons.Right:
                    return MouseButton.Right;
                case Forms.MouseButtons.Middle:
                    return MouseButton.Middle;
                case Forms.MouseButtons.XButton1:
                    return MouseButton.XButton1;
                case Forms.MouseButtons.XButton2:
                    return MouseButton.XButton2;
            }
            throw new InvalidOperationException();
        }

        #endregion Conversion members
    }

  } 

  

在主窗口上引用该命名控件 xmlns:l="clr-namespace:WpfApplication1"

在主窗口里添加如下代码

        <l:NotificationAreaIcon
                      Text="NotificationAreaApplication1"
                      Icon="Resources\NotificationAreaIcon.ico"
                      MouseDoubleClick="OnNotificationAreaIconDoubleClick" Grid.ColumnSpan="2">
            <l:NotificationAreaIcon.MenuItems>
                <forms:MenuItem Text="关于作者" Click="OnMenuItemAboutClick"/>
                <forms:MenuItem Text="-" />
                <forms:MenuItem Text="Open" Click="OnMenuItemOpenClick" DefaultItem="True" />
                <forms:MenuItem Text="-" />
                <forms:MenuItem Text="Exit" Click="OnMenuItemExitClick" />
            </l:NotificationAreaIcon.MenuItems>

   </l:NotificationAreaIcon>  

后台定义如下状态，并重载其Window类的OnStateChanged和OnClosing方法，代码如下:

        WindowState lastWindowState;
        bool shouldClose;

        public MainWindow()
        {
            InitializeComponent();
            this.Loaded += new RoutedEventHandler(MainWindow_Loaded);
        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            DataBind();
        }

        protected override void OnStateChanged(EventArgs e)
        {
            lastWindowState = WindowState;
        }

        protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
        {
            if (!shouldClose)
            {
                e.Cancel = true;
                Hide();
            }

} 

并为托盘菜单添加事件：

        protected void OnMenuItemAboutClick(object sender, EventArgs e)
        {
            new Window1().Show();
        }

        private void OnNotificationAreaIconDoubleClick(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left)
            {
                Open();
            }
        }

        private void OnMenuItemOpenClick(object sender, EventArgs e)
        {
            Open();
        }

        private void Open()
        {
            Show();
            WindowState = lastWindowState;
        }

        private void OnMenuItemExitClick(object sender, EventArgs e)
        {
            shouldClose = true;
            Close();

} 

完成，运行我们的程序，看到托盘已经有我们添加的菜单了：

 

 DEMO：/Files/leeolevis/NotifiWpfAppl.rar