C#键盘鼠标钩子

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    /** 老外写的一个C#钩子类，写的非常好。* 捕获键盘鼠标所有事件* 模拟鼠标和模拟键盘操作* * *//// 
  /// 鼠标和键盘钩子的抽象类/// 
  public abstract class GlobalHook{#region Windows API Code[StructLayout(LayoutKind.Sequential)]protected class POINT{public int x;public int y;}[StructLayout(LayoutKind.Sequential)]protected class MouseHookStruct{public POINT pt;public int hwnd;public int wHitTestCode;public int dwExtraInfo;}[StructLayout(LayoutKind.Sequential)]protected class MouseLLHookStruct{public POINT pt;public int mouseData;public int flags;public int time;public int dwExtraInfo;}[StructLayout(LayoutKind.Sequential)]protected class KeyboardHookStruct{public int vkCode;public int scanCode;public int flags;public int time;public int dwExtraInfo;}[DllImport("user32.dll", CharSet = CharSet.Auto,CallingConvention = CallingConvention.StdCall, SetLastError = true)]protected static extern int SetWindowsHookEx(int idHook,HookProc lpfn,IntPtr hMod,int dwThreadId);[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]private static extern IntPtr GetModuleHandle(String modulename);[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]private static extern IntPtr SetWindowsHookExW(int idHook,HookProc lpfn,IntPtr hmod,uint dwThreadID);[DllImport("user32.dll", CharSet = CharSet.Auto,CallingConvention = CallingConvention.StdCall, SetLastError = true)]protected static extern int UnhookWindowsHookEx(int idHook);[DllImport("user32.dll", CharSet = CharSet.Auto,CallingConvention = CallingConvention.StdCall)]protected static extern int CallNextHookEx(int idHook,int nCode,int wParam,IntPtr lParam);[DllImport("user32")]protected static extern int ToAscii(int uVirtKey,int uScanCode,byte[] lpbKeyState,byte[] lpwTransKey,int fuState);[DllImport("user32")]protected static extern int GetKeyboardState(byte[] pbKeyState);[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]protected static extern short GetKeyState(int vKey);protected delegate int HookProc(int nCode, int wParam, IntPtr lParam);protected const int WH_MOUSE_LL = 14;protected const int WH_KEYBOARD_LL = 13;protected const int WH_MOUSE = 7;protected const int WH_KEYBOARD = 2;protected const int WM_MOUSEMOVE = 0x200;protected const int WM_LBUTTONDOWN = 0x201;protected const int WM_RBUTTONDOWN = 0x204;protected const int WM_MBUTTONDOWN = 0x207;protected const int WM_LBUTTONUP = 0x202;protected const int WM_RBUTTONUP = 0x205;protected const int WM_MBUTTONUP = 0x208;protected const int WM_LBUTTONDBLCLK = 0x203;protected const int WM_RBUTTONDBLCLK = 0x206;protected const int WM_MBUTTONDBLCLK = 0x209;protected const int WM_MOUSEWHEEL = 0x020A;protected const int WM_KEYDOWN = 0x100;protected const int WM_KEYUP = 0x101;protected const int WM_SYSKEYDOWN = 0x104;protected const int WM_SYSKEYUP = 0x105;protected const byte VK_SHIFT = 0x10;protected const byte VK_CAPITAL = 0x14;protected const byte VK_NUMLOCK = 0x90;protected const byte VK_LSHIFT = 0xA0;protected const byte VK_RSHIFT = 0xA1;protected const byte VK_LCONTROL = 0xA2;protected const byte VK_RCONTROL = 0x3;protected const byte VK_LALT = 0xA4;protected const byte VK_RALT = 0xA5;protected const byte LLKHF_ALTDOWN = 0x20;#endregion#region Private Variablesprotected int _hookType;protected int _handleToHook;protected bool _isStarted;protected HookProc _hookCallback;#endregion#region Propertiespublic bool IsStarted{get{return _isStarted;}}#endregion#region Constructorpublic GlobalHook(){//绑定ApplicationExit事件Application.ApplicationExit += new EventHandler(Application_ApplicationExit);}#endregion#region Methodspublic void Start(){if (!_isStarted &&_hookType != 0){//确保_hookCallback不是一个空的引用//如果是，GC会随机回收它，并且一个空的引用会爆出异常_hookCallback = new HookProc(HookCallbackProcedure);using (Process curPro = Process.GetCurrentProcess()){using (ProcessModule curMod = curPro.MainModule){_handleToHook = (int)SetWindowsHookExW(_hookType,_hookCallback,GetModuleHandle(curMod.ModuleName),0);}}// 钩成功if (_handleToHook != 0){_isStarted = true;}}}public void Stop(){if (_isStarted){UnhookWindowsHookEx(_handleToHook);_isStarted = false;}}/// 
/// 钩子回调函数/// 
/// /// /// /// protected virtual int HookCallbackProcedure(int nCode, Int32 wParam, IntPtr lParam){// This method must be overriden by each extending hook  return 0;}/// 
/// 程序退出方法/// 
/// /// protected void Application_ApplicationExit(object sender, EventArgs e){if (_isStarted){Stop();}}#endregion}/// 
  /// 键盘钩子类/// 
  public class KeyboardHook : GlobalHook{#region Eventspublic event KeyEventHandler KeyDown;public event KeyEventHandler KeyUp;public event KeyPressEventHandler KeyPress;#endregion#region Constructorpublic KeyboardHook(){_hookType = WH_KEYBOARD_LL;}#endregion#region Methodsprotected override int HookCallbackProcedure(int nCode, int wParam, IntPtr lParam){bool handled = false;if (nCode > -1 && (KeyDown != null || KeyUp != null || KeyPress != null)){KeyboardHookStruct keyboardHookStruct =(KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));// Is Control being held down?  bool control = ((GetKeyState(VK_LCONTROL) & 0x80) != 0) ||((GetKeyState(VK_RCONTROL) & 0x80) != 0);// Is Shift being held down?  bool shift = ((GetKeyState(VK_LSHIFT) & 0x80) != 0) ||((GetKeyState(VK_RSHIFT) & 0x80) != 0);// Is Alt being held down?  bool alt = ((GetKeyState(VK_LALT) & 0x80) != 0) ||((GetKeyState(VK_RALT) & 0x80) != 0);// Is CapsLock on?  bool capslock = (GetKeyState(VK_CAPITAL) != 0);// Create event using keycode and control/shift/alt values found above  KeyEventArgs e = new KeyEventArgs((Keys)(keyboardHookStruct.vkCode |(control ? (int)Keys.Control : 0) |(shift ? (int)Keys.Shift : 0) |(alt ? (int)Keys.Alt : 0)));// Handle KeyDown and KeyUp events  switch (wParam){case WM_KEYDOWN:case WM_SYSKEYDOWN:if (KeyDown != null){KeyDown(this, e);handled = handled || e.Handled;}break;case WM_KEYUP:case WM_SYSKEYUP:if (KeyUp != null){KeyUp(this, e);handled = handled || e.Handled;}break;}// Handle KeyPress event  if (wParam == WM_KEYDOWN &&!handled &&!e.SuppressKeyPress &&KeyPress != null){byte[] keyState = new byte[256];byte[] inBuffer = new byte[2];GetKeyboardState(keyState);if (ToAscii(keyboardHookStruct.vkCode,keyboardHookStruct.scanCode,keyState,inBuffer,keyboardHookStruct.flags) == 1){char key = (char)inBuffer[0];if ((capslock ^ shift) && Char.IsLetter(key))key = Char.ToUpper(key);KeyPressEventArgs e2 = new KeyPressEventArgs(key);KeyPress(this, e2);handled = handled || e.Handled;}}}if (handled){return 1;}else{return CallNextHookEx(_handleToHook, nCode, wParam, lParam);}}#endregion}/// 
  /// 鼠标钩子类/// 
  public class MouseHook : GlobalHook{#region MouseEventType Enumprivate enum MouseEventType{None,MouseDown,MouseUp,DoubleClick,MouseWheel,MouseMove}#endregion#region Events/// 
/// 鼠标按下事件/// 
public event MouseEventHandler MouseDown;/// 
/// 送开鼠标事件/// 
public event MouseEventHandler MouseUp;/// 
/// 鼠标移动事件/// 
public event MouseEventHandler MouseMove;/// 
/// 鼠标滚轮事件/// 
public event MouseEventHandler MouseWheel;/// 
/// 鼠标单击事件/// 
public event EventHandler Click;/// 
/// 鼠标双击事件/// 
public event EventHandler DoubleClick;#endregion#region Constructorpublic MouseHook(){_hookType = WH_MOUSE_LL;}#endregion#region Methods/// 
/// 钩子回调函数/// 
/// /// /// /// protected override int HookCallbackProcedure(int nCode, int wParam, IntPtr lParam){if (nCode > -1 && (MouseDown != null || MouseUp != null || MouseMove != null)){MouseLLHookStruct mouseHookStruct =(MouseLLHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseLLHookStruct));MouseButtons button = GetButton(wParam);MouseEventType eventType = GetEventType(wParam);MouseEventArgs e = new MouseEventArgs(button,(eventType == MouseEventType.DoubleClick ? 2 : 1),mouseHookStruct.pt.x,mouseHookStruct.pt.y,(eventType == MouseEventType.MouseWheel ? (short)((mouseHookStruct.mouseData >> 16) & 0xffff) : 0));// Prevent multiple Right Click events (this probably happens for popup menus)  if (button == MouseButtons.Right && mouseHookStruct.flags != 0){eventType = MouseEventType.None;}switch (eventType){case MouseEventType.MouseDown:if (MouseDown != null){MouseDown(this, e);}break;case MouseEventType.MouseUp:if (Click != null){Click(this, new EventArgs());}if (MouseUp != null){MouseUp(this, e);}break;case MouseEventType.DoubleClick:if (DoubleClick != null){DoubleClick(this, new EventArgs());}break;case MouseEventType.MouseWheel:if (MouseWheel != null){MouseWheel(this, e);}break;case MouseEventType.MouseMove:if (MouseMove != null){MouseMove(this, e);}break;default:break;}}return CallNextHookEx(_handleToHook, nCode, wParam, lParam);}private MouseButtons GetButton(Int32 wParam){switch (wParam){case WM_LBUTTONDOWN:case WM_LBUTTONUP:case WM_LBUTTONDBLCLK:return MouseButtons.Left;case WM_RBUTTONDOWN:case WM_RBUTTONUP:case WM_RBUTTONDBLCLK:return MouseButtons.Right;case WM_MBUTTONDOWN:case WM_MBUTTONUP:case WM_MBUTTONDBLCLK:return MouseButtons.Middle;default:return MouseButtons.None;}}private MouseEventType GetEventType(Int32 wParam){switch (wParam){case WM_LBUTTONDOWN:case WM_RBUTTONDOWN:case WM_MBUTTONDOWN:return MouseEventType.MouseDown;case WM_LBUTTONUP:case WM_RBUTTONUP:case WM_MBUTTONUP:return MouseEventType.MouseUp;case WM_LBUTTONDBLCLK:case WM_RBUTTONDBLCLK:case WM_MBUTTONDBLCLK:return MouseEventType.DoubleClick;case WM_MOUSEWHEEL:return MouseEventType.MouseWheel;case WM_MOUSEMOVE:return MouseEventType.MouseMove;default:return MouseEventType.None;}}#endregion}/// 
  /// 模拟键盘事件类/// 
  public static class KeyboardSimulator{#region Standard Keyboard Shortcuts Enum/// 
  ///  标准的人体工程键盘快捷键 /// 
  public enum StandardShortcut{Copy,Cut,Paste,SelectAll,Save,Open,New,Close,Print}#endregion#region Windows API Codeconst int KEYEVENTF_EXTENDEDKEY = 0x1;const int KEYEVENTF_KEYUP = 0x2;[DllImport("user32.dll")]static extern void keybd_event(byte key, byte scan, int flags, int extraInfo);#endregion#region Methodspublic static void KeyDown(Keys key){keybd_event(ParseKey(key), 0, 0, 0);}public static void KeyUp(Keys key){keybd_event(ParseKey(key), 0, KEYEVENTF_KEYUP, 0);}public static void KeyPress(Keys key){KeyDown(key);KeyUp(key);}public static void SimulateStandardShortcut(StandardShortcut shortcut){switch (shortcut){case StandardShortcut.Copy:KeyDown(Keys.Control);KeyPress(Keys.C);KeyUp(Keys.Control);break;case StandardShortcut.Cut:KeyDown(Keys.Control);KeyPress(Keys.X);KeyUp(Keys.Control);break;case StandardShortcut.Paste:KeyDown(Keys.Control);KeyPress(Keys.V);KeyUp(Keys.Control);break;case StandardShortcut.SelectAll:KeyDown(Keys.Control);KeyPress(Keys.A);KeyUp(Keys.Control);break;case StandardShortcut.Save:KeyDown(Keys.Control);KeyPress(Keys.S);KeyUp(Keys.Control);break;case StandardShortcut.Open:KeyDown(Keys.Control);KeyPress(Keys.O);KeyUp(Keys.Control);break;case StandardShortcut.New:KeyDown(Keys.Control);KeyPress(Keys.N);KeyUp(Keys.Control);break;case StandardShortcut.Close:KeyDown(Keys.Alt);KeyPress(Keys.F4);KeyUp(Keys.Alt);break;case StandardShortcut.Print:KeyDown(Keys.Control);KeyPress(Keys.P);KeyUp(Keys.Control);break;}}static byte ParseKey(Keys key){// Alt, Shift, and Control need to be changed for API function to work with them  switch (key){case Keys.Alt:return (byte)18;case Keys.Control:return (byte)17;case Keys.Shift:return (byte)16;default:return (byte)key;}}#endregion}/// 
  /// 模拟鼠标事件类/// 
  public static class MouseSimulator{/// 
  /// And X, Y point on the screen  /// 
  public struct MousePoint{public MousePoint(Point p){X = p.X;Y = p.Y;}public int X;public int Y;public static implicit operator Point(MousePoint p){return new Point(p.X, p.Y);}}/// 
  /// Mouse buttons that can be pressed  /// 
  public enum MouseButton{Left = 0x2,Right = 0x8,Middle = 0x20}#region Windows API Code[DllImport("user32.dll")]static extern int ShowCursor(bool show);[DllImport("user32.dll")]static extern void mouse_event(int flags, int dX, int dY, int buttons, int extraInfo);const int MOUSEEVENTF_MOVE = 0x1;const int MOUSEEVENTF_LEFTDOWN = 0x2;const int MOUSEEVENTF_LEFTUP = 0x4;const int MOUSEEVENTF_RIGHTDOWN = 0x8;const int MOUSEEVENTF_RIGHTUP = 0x10;const int MOUSEEVENTF_MIDDLEDOWN = 0x20;const int MOUSEEVENTF_MIDDLEUP = 0x40;const int MOUSEEVENTF_WHEEL = 0x800;const int MOUSEEVENTF_ABSOLUTE = 0x8000;#endregion#region Properties/// 
  /// Gets or sets a structure that represents both X and Y mouse coordinates  /// 
  public static MousePoint Position{get{return new MousePoint(Cursor.Position);}set{Cursor.Position = value;}}/// 
  /// Gets or sets only the mouse's x coordinate  /// 
  public static int X{get{return Cursor.Position.X;}set{Cursor.Position = new Point(value, Y);}}/// 
  /// Gets or sets only the mouse's y coordinate  /// 
  public static int Y{get{return Cursor.Position.Y;}set{Cursor.Position = new Point(X, value);}}#endregion#region Methods/// 
  /// Press a mouse button down  /// 
  ///   public static void MouseDown(MouseButton button){mouse_event(((int)button), 0, 0, 0, 0);}public static void MouseDown(MouseButtons button){switch (button){case MouseButtons.Left:MouseDown(MouseButton.Left);break;case MouseButtons.Middle:MouseDown(MouseButton.Middle);break;case MouseButtons.Right:MouseDown(MouseButton.Right);break;}}/// 
  /// Let a mouse button up  /// 
  ///   public static void MouseUp(MouseButton button){mouse_event(((int)button) * 2, 0, 0, 0, 0);}public static void MouseUp(MouseButtons button){switch (button){case MouseButtons.Left:MouseUp(MouseButton.Left);break;case MouseButtons.Middle:MouseUp(MouseButton.Middle);break;case MouseButtons.Right:MouseUp(MouseButton.Right);break;}}/// 
  /// Click a mouse button (down then up)  /// 
  ///   public static void Click(MouseButton button){MouseDown(button);MouseUp(button);}public static void Click(MouseButtons button){switch (button){case MouseButtons.Left:Click(MouseButton.Left);break;case MouseButtons.Middle:Click(MouseButton.Middle);break;case MouseButtons.Right:Click(MouseButton.Right);break;}}/// 
  /// Double click a mouse button (down then up twice)  /// 
  ///   public static void DoubleClick(MouseButton button){Click(button);Click(button);}public static void DoubleClick(MouseButtons button){switch (button){case MouseButtons.Left:DoubleClick(MouseButton.Left);break;case MouseButtons.Middle:DoubleClick(MouseButton.Middle);break;case MouseButtons.Right:DoubleClick(MouseButton.Right);break;}}/// 
  /// Show a hidden current on currently application  /// 
  public static void Show(){ShowCursor(true);}/// 
  /// Hide mouse cursor only on current application's forms  /// 
  public static void Hide(){ShowCursor(false);}#endregion}  

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