/// <summary>/// 鼠标全局钩子/// </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>/// 点/// </summary>[StructLayout(LayoutKind.Sequential)]public class POINT{public int x;public int y;}/// <summary>/// 钩子结构体/// </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// 装置钩子的函数[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);// 卸下钩子的函数[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]public static extern bool UnhookWindowsHookEx(int idHook);// 下一个钩挂的函数[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);// 全局的鼠标事件public event MouseEventHandler OnMouseActivity;// 钩子回调函数public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);// 声明鼠标钩子事件类型private HookProc _mouseHookProcedure; private static int _hMouseHook = 0; // 鼠标钩子句柄/// <summary>/// 构造函数/// </summary>public MouseHook(){}/// <summary>/// 析构函数/// </summary>~MouseHook(){Stop();}/// <summary>/// 启动全局钩子/// </summary>public void Start(){// 安装鼠标钩子if (_hMouseHook == 0){// 生成一个HookProc的实例._mouseHookProcedure = new HookProc(MouseHookProc);_hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, _mouseHookProcedure, Marshal.GetHINSTANCE(System.Reflection.Assembly.GetExecutingAssembly().GetModules()[0]), 0);//假设装置失败停止钩子if (_hMouseHook == 0){Stop();throw new Exception("SetWindowsHookEx failed.");}}}/// <summary>/// 停止全局钩子/// </summary>public void Stop(){bool retMouse = true;if (_hMouseHook != 0){retMouse = UnhookWindowsHookEx(_hMouseHook);_hMouseHook = 0;}// 假设卸下钩子失败if (!(retMouse)) throw new Exception("UnhookWindowsHookEx failed.");}/// <summary>/// 鼠标钩子回调函数/// </summary>private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam){// 假设正常执行而且用户要监听鼠标的消息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;}// 从回调函数中得到鼠标的信息MouseHookStruct MyMouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));MouseEventArgs e = new MouseEventArgs(button, clickCount, MyMouseHookStruct.pt.x, MyMouseHookStruct.pt.y, 0);// 假设想要限制鼠标在屏幕中的移动区域能够在此处设置// 后期须要考虑实际的x、y的容差if(!Screen.PrimaryScreen.Bounds.Contains(e.X, e.Y)){//return 1;}OnMouseActivity(this, e);}// 启动下一次钩子return CallNextHookEx(_hMouseHook, nCode, wParam, lParam);}}