///<summary>/// 鼠標全局鉤子    ///</summary>public class MouseHook    {        private const int WM_MOUSEMOVE   = 0x200;        private const int WM_LBUTTONDOWN = 0x201;        private const int WM_RBUTTONDOWN = 0x204;        private const int WM_MBUTTONDOWN = 0x207;        private const int WM_LBUTTONUP   = 0x202;        private const int WM_RBUTTONUP   = 0x205;        private const int WM_MBUTTONUP   = 0x208;        private const int WM_LBUTTONDBLCLK = 0x203;        private const int WM_RBUTTONDBLCLK = 0x206;        private const int WM_MBUTTONDBLCLK = 0x209;        ///<summary>/// 點        ///</summary>[StructLayout(LayoutKind.Sequential)]        public class POINT        {            public int x;            public int y;        }        ///<summary>/// 鉤子結(jié)構(gòu)體        ///</summary>[StructLayout(LayoutKind.Sequential)]        public class MouseHookStruct        {            public POINT pt;            public int hWnd;            public int wHitTestCode;            public int dwExtraInfo;        }        public const int WH_MOUSE_LL = 14; // mouse hook constant        // 裝置鉤子的函數(shù)        [DllImport(user32.dll, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);        // 卸下鉤子的函數(shù)        [DllImport(user32.dll, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]        public static extern bool UnhookWindowsHookEx(int idHook);        // 下一個鉤掛的函數(shù)        [DllImport(user32.dll, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]        public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);        // 全局的鼠標事件        public event MouseEventHandler OnMouseActivity;        // 鉤子回調(diào)函數(shù)        public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);        // 聲明鼠標鉤子事件類型        private HookProc   _mouseHookProcedure;         private static int _hMouseHook = 0; // 鼠標鉤子句柄                ///<summary>/// 構(gòu)造函數(shù)        ///</summary>public MouseHook()        {        }                ///<summary>/// 析構(gòu)函數(shù)        ///</summary>~MouseHook()        {            Stop();        }        ///<summary>/// 啟動全局鉤子        ///</summary>public void Start()        {            // 安裝鼠標鉤子            if (_hMouseHook == 0)            {                // 生成一個HookProc的實例.                _mouseHookProcedure = new HookProc(MouseHookProc);                _hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, _mouseHookProcedure, Marshal.GetHINSTANCE(System.Reflection.Assembly.GetExecutingAssembly().GetModules()[0]), 0);                //如果裝置失敗停止鉤子                if (_hMouseHook == 0)                {                    Stop();                    throw new Exception(SetWindowsHookEx failed.);                }            }        }        ///<summary>/// 停止全局鉤子        ///</summary>public void Stop()        {            bool retMouse = true;            if (_hMouseHook != 0)            {                retMouse    = UnhookWindowsHookEx(_hMouseHook);                _hMouseHook = 0;            }            // 如果卸下鉤子失敗            if (!(retMouse))                 throw new Exception(UnhookWindowsHookEx failed.);        }        ///<summary>/// 鼠標鉤子回調(diào)函數(shù)        ///</summary>private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)        {            // 如果正常運行并且用戶要監(jiān)聽鼠標的消息            if ((nCode >= 0) && (OnMouseActivity != null))            {                MouseButtons button = MouseButtons.None;                int clickCount = 0;                switch (wParam)                {                    case WM_LBUTTONDOWN:                        button = MouseButtons.Left;                        clickCount = 1;                        break;                    case WM_LBUTTONUP:                        button = MouseButtons.Left;                        clickCount = 1;                        break;                    case WM_LBUTTONDBLCLK:                        button = MouseButtons.Left;                        clickCount = 2;                        break;                    case WM_RBUTTONDOWN:                        button = MouseButtons.Right;                        clickCount = 1;                        break;                    case WM_RBUTTONUP:                        button = MouseButtons.Right;                        clickCount = 1;                        break;                    case WM_RBUTTONDBLCLK:                        button = MouseButtons.Right;                        clickCount = 2;                        break;                }                // 從回調(diào)函數(shù)中得到鼠標的信息                MouseHookStruct MyMouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));                MouseEventArgs e = new MouseEventArgs(button, clickCount, MyMouseHookStruct.pt.x, MyMouseHookStruct.pt.y, 0);                // 如果想要限制鼠標在屏幕中的移動區(qū)域可以在此處設(shè)置                // 后期需要考慮實際的x、y的容差                if(!Screen.PrimaryScreen.Bounds.Contains(e.X, e.Y))                {                    //return 1;                }                OnMouseActivity(this, e);            }            // 啟動下一次鉤子            return CallNextHookEx(_hMouseHook, nCode, wParam, lParam);        }    }