WinForm监控键盘鼠标

监控键盘：

using System;using System.Runtime.InteropServices;using System.Windows.Forms;namespace WindowsFormsAppTest{    public class KeyboardHook     {        private const int WM_KEYDOWN = 0x100;        private const int WM_KEYUP = 0x101;        private const int WM_SYSKEYDOWN = 0x104;        private const int WM_SYSKEYUP = 0x105;        //全局事件        public event KeyEventHandler OnKeyDownEvent;        public event KeyEventHandler OnKeyUpEvent;        public event KeyPressEventHandler OnKeyPressEvent;        static int hKeyboardHook = 0;        //鼠标常量        public const int WH_KEYBOARD_LL = 13;        public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);        //声明键盘钩子事件类型        HookProc KeyboardHookProcedure;        /// <summary>        /// 声明键盘钩子的封送结构类型        /// </summary>        [StructLayout(LayoutKind.Sequential)]        public class KeyboardHookStruct        {            public int vkCode;//表示一个1到254间的虚拟键盘码            public int scanCode;//表示硬件扫描码            public int flags;            public int time;            public int dwExtraInfo;        }        [DllImport("kernel32.dll")]        public static extern IntPtr GetModuleHandle(string lpModuleName);        //安装钩子        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);        //下一个钩子        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]        public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);        //卸载钩子        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]        public static extern bool UnhookWindowsHookEx(int idHook);        private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)        {            if ((nCode >= 0) && (OnKeyDownEvent != null || OnKeyUpEvent != null || OnKeyPressEvent != null))            {                KeyboardHookStruct MyKBHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));                //引发OnKeyDownEvent                if (OnKeyDownEvent != null && (wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN))                {                    Keys keyData = (Keys)MyKBHookStruct.vkCode;                    KeyEventArgs e = new KeyEventArgs(keyData);                    OnKeyDownEvent(this, e);                }            }            return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);        }        public void Start()        {            if (hKeyboardHook == 0)            {                KeyboardHookProcedure = new HookProc(KeyboardHookProc);                using (System.Diagnostics.Process curProcess = System.Diagnostics.Process.GetCurrentProcess())                using (System.Diagnostics.ProcessModule curModule = curProcess.MainModule)                    hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyboardHookProcedure, GetModuleHandle(curModule.ModuleName), 0);                if (hKeyboardHook == 0)                {                    Stop();                    throw new Exception("Set GlobalKeyboardHook failed!");                }            }        }        public void Stop()        {            bool retKeyboard = true;            if (hKeyboardHook != 0)            {                retKeyboard = UnhookWindowsHookEx(hKeyboardHook);                hKeyboardHook = 0;            }            if (!retKeyboard)                throw new Exception("Unload GlobalKeyboardHook failed!");        }        //构造函数中安装钩子        public KeyboardHook()        {            Start();        }        //析构函数中卸载钩子        ~KeyboardHook()        {            Stop();        }    }}

监控鼠标：

using System;using System.Windows.Forms;using System.Runtime.InteropServices;namespace WindowsFormsAppTest{    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;        //全局的事件          public event MouseEventHandler OnMouseActivity;        static int hMouseHook = 0; //鼠标钩子句柄          //鼠标常量          public const int WH_MOUSE_LL = 14; //mouse hook constant          HookProc MouseHookProcedure; //声明鼠标钩子事件类型.          //声明一个Point的封送类型          [StructLayout(LayoutKind.Sequential)]        public class POINT        {            public int x;            public int y;        }        //声明鼠标钩子的封送结构类型          [StructLayout(LayoutKind.Sequential)]        public class MouseHookStruct        {            public POINT pt;            public int hWnd;            public int wHitTestCode;            public int dwExtraInfo;        }        [DllImport("kernel32.dll")]        public static extern IntPtr GetModuleHandle(string lpModuleName);        //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);        public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);        /// <summary>          /// 墨认的构造函数构造当前类的实例.          /// </summary>          public MouseHook()        {        }        //析构函数.          ~MouseHook()        {            Stop();        }        public void Start()        {            //安装鼠标钩子              if (hMouseHook == 0)            {                //生成一个HookProc的实例.                  MouseHookProcedure = new HookProc(MouseHookProc);                using (System.Diagnostics.Process curProcess = System.Diagnostics.Process.GetCurrentProcess())                using (System.Diagnostics.ProcessModule curModule = curProcess.MainModule)                    hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookProcedure, GetModuleHandle(curModule.ModuleName), 0);                                //如果装置失败停止钩子                  if (hMouseHook == 0)                {                    Stop();                    throw new Exception("SetWindowsHookEx failed.");                }            }        }        public void Stop()        {            bool retMouse = true;            if (hMouseHook != 0)            {                retMouse = UnhookWindowsHookEx(hMouseHook);                hMouseHook = 0;            }            //如果卸下钩子失败              if (!(retMouse)) throw new Exception("UnhookWindowsHookEx failed.");        }        private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)        {            //如果正常运行并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);                            OnMouseActivity(this, e);            }            return CallNextHookEx(hMouseHook, nCode, wParam, lParam);        }      }}

用法：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace WindowsFormsAppTest{    public partial class Form1 : Form    {              public Form1()        {            InitializeComponent();        }        KeyboardHook key = new KeyboardHook();        MouseHook mouse = new MouseHook();          private void Form1_Load(object sender, EventArgs e)        {            key.OnKeyDownEvent += new KeyEventHandler(hook_OnKeyDownEvent);            key.Start();            mouse.OnMouseActivity += new MouseEventHandler(mouse_OnMouseActivity);            mouse.Start();        }        void hook_OnKeyDownEvent(object sender, KeyEventArgs e)        {           textBox1.AppendText(e.KeyCode + "  ");        }          private void Form1_FormClosed(object sender, FormClosedEventArgs e)        {            key.Stop();            mouse.Stop();        }        void mouse_OnMouseActivity(object sender, MouseEventArgs e)        {            string str = "X:" + e.X + "  Y:" + e.Y;            this.Text = str;        }      }}