C#用鼠标钩子屏蔽任务栏右键弹出菜单

最近遇到需要屏蔽任务栏的右键弹出菜单问题，小费了番周折，写出来希望对需要的人有帮助。

网上查了半天资料，修改注册表可以实现，但有个缺点需要重启机器，甚为不爽。还有用鼠标钩子截获鼠标右键消息来达到目的，这里需要注意一点，当鼠标右键释放时菜单才会弹出（由于开始只截获了鼠标按下的消息，程序一直不灵，一度怀疑用钩子实现的可能性，哎，细心细心啊）。

关于c#调用Windows API和钩子的使用，资料很多就不细说了。可以参考

http://blog.csdn.net/LeoMaya/archive/2007/05/18/1615052.aspx

http://blog.csdn.net/wztgq/archive/2006/08/02/1012132.aspx

还有两个Api的浏览器，相当不错

FoxAPI中文函数浏览器V1.5（有详细的Api函数的说明）

API Explorer V2.82（可以把Api函数转换成C#和VB.Net代码）

在Visual Studio 2005中调试通过，工程可在http://download.csdn.net/source/536490下载

 

///Author:danseshi///Email:[e-mail]///Bolg:http://blog.csdn.net/danseshi////Date:2008.7.12using System;using System.Windows.Forms;using System.Drawing;using System.Runtime.InteropServices;using System.Diagnostics;namespace MouseHook{    public partial class Form1 : Form    {        #region Fields        private int hMouseHook = 0;        //全局钩子常量        private const int WH_MOUSE_LL = 14;        //声明消息的常量,鼠标按下和释放        private const int WM_RBUTTONDOWN = 0x204;        private const int WM_RBUTTONUP = 0x205;        //保存任务栏的矩形区域        private Rectangle taskBarRect;        private Rectangle newTaskBarRect;        //定义委托        public delegate int HookProc(int nCode, int wParam, IntPtr lParam);        private HookProc MouseHookProcedure;        #endregion         #region 声明Api函数，需要引入空间(System.Runtime.InteropServices)        //寻找符合条件的窗口        [DllImport("user32.dll", EntryPoint = "FindWindow")]        public static extern int FindWindow(            string lpClassName,            string lpWindowName        );        //获取窗口的矩形区域        [DllImport("user32.dll", EntryPoint = "GetWindowRect")]        public static extern int GetWindowRect(            int hwnd,            ref Rectangle lpRect        );        //安装钩子        [DllImport("user32.dll")]        public static extern int SetWindowsHookEx(            int idHook,            HookProc lpfn,            IntPtr hInstance,            int threadId        );        //卸载钩子        [DllImport("user32.dll", EntryPoint = "UnhookWindowsHookEx")]        public static extern bool UnhookWindowsHookEx(            int hHook        );        //调用下一个钩子        [DllImport("user32.dll")]        public static extern int CallNextHookEx(            int idHook,            int nCode,            int wParam,            IntPtr lParam        );        //获取当前线程的标识符        [DllImport("kernel32.dll")]        public static extern int GetCurrentThreadId();        //获取一个应用程序或动态链接库的模块句柄        [DllImport("kernel32.dll")]        public static extern IntPtr GetModuleHandle(string name);        //鼠标结构，保存了鼠标的信息        [StructLayout(LayoutKind.Sequential)]        public struct MOUSEHOOKSTRUCT        {            public Point pt;            public int hwnd;            public int wHitTestCode;            public int dwExtraInfo;        }        #endregion        public Form1()        {            InitializeComponent();        }        /// <summary>        /// 安装钩子        /// </summary>        private void StartHook()        {            if (hMouseHook == 0)            {                hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookProcedure, GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), 0);                if (hMouseHook == 0)                {//如果设置钩子失败.                     this.StopHook();                    MessageBox.Show("Set windows hook failed!");                }            }        }        /// <summary>        /// 卸载钩子        /// </summary>        private void StopHook()        {            bool stop = true;            if (hMouseHook != 0)            {                stop = UnhookWindowsHookEx(hMouseHook);                hMouseHook = 0;                if (!stop)                {//卸载钩子失败                    MessageBox.Show("Unhook failed!");                }            }        }        private int MouseHookProc(int nCode, int wParam, IntPtr lParam)        {            if (nCode >= 0)            {                //把参数lParam在内存中指向的数据转换为MOUSEHOOKSTRUCT结构                MOUSEHOOKSTRUCT mouse = (MOUSEHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(MOUSEHOOKSTRUCT));//鼠标                                //这句为了看鼠标的位置                this.Text = "MousePosition:" + mouse.pt.ToString();                if (wParam == WM_RBUTTONDOWN || wParam == WM_RBUTTONUP)                { //鼠标按下或者释放时候截获                    if (newTaskBarRect.Contains(mouse.pt))                    { //当鼠标在任务栏的范围内                        //如果返回1，则结束消息，这个消息到此为止，不再传递。                        //如果返回0或调用CallNextHookEx函数则消息出了这个钩子继续往下传递，也就是传给消息真正的接受者                        return 1;                    }                }            }            return CallNextHookEx(hMouseHook, nCode, wParam, lParam);        }        #region Events        private void Form1_Load(object sender, EventArgs e)        {            MouseHookProcedure = new HookProc(MouseHookProc);            //taskBarHandle为返回的任务栏的句柄            //Shell_TrayWnd为任务栏的类名            int taskBarHandle = FindWindow("Shell_TrayWnd", null);            //获得任务栏的区域            //有一点要注意，函数返回时，taskBarRect包含的是窗口的左上角和右下角的屏幕坐标            //就是说taskBarRect.Width和taskBarRect.Height是相对于屏幕左上角（0，0）的数值            //这与c#的Rectangle结构是不同的            GetWindowRect(taskBarHandle, ref taskBarRect);            this.richTextBox1.Text = "taskBarRect.Location:" + taskBarRect.Location.ToString() + "/n";            this.richTextBox1.Text += "taskBarRect.Size:" + taskBarRect.Size.ToString() + "/n/n";            //构造一个c#中的Rectangle结构            newTaskBarRect = new Rectangle(            taskBarRect.X,            taskBarRect.Y,            taskBarRect.Width - taskBarRect.X,            taskBarRect.Height - taskBarRect.Y            );            this.richTextBox1.Text += "newTaskBarRect.Location:" + newTaskBarRect.Location.ToString() + "/n";            this.richTextBox1.Text += "newTaskBarRect.Size:" + newTaskBarRect.Size.ToString();        }        private void Form1_FormClosing(object sender, FormClosingEventArgs e)        {            this.StopHook();        }        private void button1_Click(object sender, EventArgs e)        {            this.StartHook();            this.button1.Enabled = false;            this.button2.Enabled = true;        }        private void button2_Click(object sender, EventArgs e)        {            this.StopHook();            this.button1.Enabled = true;            this.button2.Enabled = false;        }        #endregion    }}