using System;  
using System.Collections.Generic;  
using System.ComponentModel;  
using System.Data;  
using System.Drawing;  
using System.Linq;  
using System.Text;  
using System.Windows.Forms;  
  
using System.Windows;
using System.Runtime.InteropServices;

namespace W_TestDemo  
{  
    //NotifyIcon为托盘控件
    public partial class Form2 : Form   
    {  
        //这里在窗体上没有拖拽一个NotifyIcon控件，而是在这里定义了一个变量  
        private NotifyIcon notifyIcon = null;  
  
        public Form2()  
        {  
            InitializeComponent();  
            //调用初始化托盘显示函数  
            InitialTray();

            RegisterHotKey(this.Handle, 10, MODKEY.ALT, Keys.X);
            RegisterHotKey(this.Handle, 11, MODKEY.ALT, Keys.S);
        }
        protected override void WndProc(ref Message m)
        {
            if (m.Msg == 0x0312)
            {
                switch (m.WParam.ToInt32())
                {
                    case 10:
                        {
                            this.Visible = true;
                            this.Activate();
                        }
                        break;
                    case 11:
                        {
                            this.Visible = true;
                            this.Activate();
                        }
                        break;
                    default:
                        break;
                }
                return;
            }
            base.WndProc(ref m);
        }

        //要定义热键的窗口的句柄
        //定义热键ID（不能与其它ID重复）int id, 
        //标识热键是否在按Alt、Ctrl、Shift、Windows等键时才会生效KeyModifiers fsModifiers,                 Keys vk                     //定义热键的内容
        [DllImport("user32.dll")]
        public static extern bool RegisterHotKey(IntPtr wnd, int id, MODKEY mode, Keys vk);

        [DllImport("user32.dll")]
        public static extern bool UnregisterHotKey(IntPtr wnd, int id);

        [Flags()]
        public enum MODKEY
        {
            None = 0,
            ALT = 0x0001,
            CTRL = 0x0002,
            SHIFT = 0x0004,
            WIN = 0x0008,
        }
  
        private void Form1_Load(object sender, EventArgs e)  
        {  
            //这里写其他代码  
        } 
  
        /// <summary>  
        /// 窗体关闭的单击事件  
        /// </summary>  
        /// <param name="sender"></param>  
        /// <param name="e"></param>  
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)  
        {  
            e.Cancel = true;  
            //通过这里可以看出，这里的关闭其实不是真正意义上的“关闭”，而是将窗体隐藏，实现一个“伪关闭”  
            this.Hide();  
        }  
  
        private void InitialTray()  
        {  
            //隐藏主窗体  
            this.Hide();  
  
            //实例化一个NotifyIcon对象  
            notifyIcon = new NotifyIcon();  
            //托盘图标气泡显示的内容  
            notifyIcon.BalloonTipText = "正在后台运行";     
            //托盘图标显示的内容  
            notifyIcon.Text = "窗体托盘后台运行测试程序";  
            //注意：下面的路径可以是绝对路径、相对路径。但是需要注意的是：文件必须是一个.ico格式  
            notifyIcon.Icon = new System.Drawing.Icon("C:/Users/veepoo-cd/Desktop/veepoo.ico");  //绝对路径
            //notifyIcon.Icon = 
            //true表示在托盘区可见，false表示在托盘区不可见  
            notifyIcon.Visible = true;  
            //气泡显示的时间（单位是毫秒）  
            notifyIcon.ShowBalloonTip(2000);              
            notifyIcon.MouseClick += new System.Windows.Forms.MouseEventHandler(notifyIcon_MouseClick);  
              
            ////设置二级菜单  
            //MenuItem setting1 = new MenuItem("二级菜单1");  
            //MenuItem setting2 = new MenuItem("二级菜单2");  
            //MenuItem setting = new MenuItem("一级菜单", new MenuItem[]{setting1,setting2});  
  
            //帮助选项，这里只是“有名无实”在菜单上只是显示，单击没有效果，可以参照下面的“退出菜单”实现单击事件  
            MenuItem help = new MenuItem("帮助");
            help.Click += new EventHandler(help_Click);
  
            //关于选项  
            MenuItem about = new MenuItem("关于");
            about.Click += new EventHandler(about_Click);

            //退出菜单项  
            MenuItem exit = new MenuItem("退出");
            exit.Click += new EventHandler(exit_Click);  
  
            ////关联托盘控件  
            //注释的这一行与下一行的区别就是参数不同，setting这个参数是为了实现二级菜单  
            //MenuItem[] childen = new MenuItem[] { setting, help, about, exit };  
            MenuItem[] childen = new MenuItem[] {help,about,exit};  
            notifyIcon.ContextMenu = new ContextMenu(childen);  
  
            //窗体关闭时触发  
            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Form1_FormClosing);  
        }  
        
        /// <summary>  
        /// 鼠标单击  
        /// </summary>  
        /// <param name="sender"></param>  
        /// <param name="e"></param>  
        private void notifyIcon_MouseClick(object sender, System.Windows.Forms.MouseEventArgs e)  
        {  
            //鼠标左键单击  
            if (e.Button == MouseButtons.Left)  
            {  
                //如果窗体是可见的，那么鼠标左击托盘区图标后，窗体为不可见  
                if (this.Visible == true )  
                {  
                    //this.Visible = false;  
                }  
                else  
                {  
                    this.Visible = true;  
                    this.Activate();  
                }  
            }  
        }  
  
        /// <summary>  
        /// 帮助选项  
        /// </summary>  
        /// <param name="sender"></param>  
        /// <param name="e"></param>  
        private void help_Click(object sender, EventArgs e)
        {
            MessageBox.Show("帮助，哈哈");
        }

        /// <summary>  
        /// 关于选项  
        /// </summary>  
        /// <param name="sender"></param>  
        /// <param name="e"></param>  
        private void about_Click(object sender, EventArgs e)
        {
            MessageBox.Show("关于，哈哈");
        }

        /// <summary>  
        /// 退出选项  
        /// </summary>  
        /// <param name="sender"></param>  
        /// <param name="e"></param>  
        private void exit_Click(object sender, EventArgs e)
        {
            //退出程序  
            System.Environment.Exit(0);
        }

    }  
}