做钩子可以参考一下

*封装的hook类： using System; using System.Windows.Forms; using System.Runtime.InteropServices; //必须引用 using System.Reflection; //必须引用 namespace KeyboardHook { class Hocy_Hook { #region私有常量 ///<summary> ///按键状态数组 ///</summary> private readonly byte[] m_KeyState = new byte[ 256 ]; private string flags; //flag=0 正常 flag=1 监控状态 flag=2 屏蔽键盘// #endregion私有常量 #region私有变量 ///<summary> ///鼠标钩子句柄 ///</summary> private IntPtr m_pMouseHook = IntPtr.Zero; ///<summary> ///键盘钩子句柄 ///</summary> private IntPtr m_pKeyboardHook = IntPtr.Zero; ///<summary> ///鼠标钩子委托实例 ///</summary> ///<remarks> ///不要试图省略此变量,否则将会导致 ///激活CallbackOnCollectedDelegate 托管调试助手(MDA)。 ///详细请参见MSDN中关于CallbackOnCollectedDelegate 的描述 ///</remarks> private HookProc m_MouseHookProcedure; ///<summary> ///键盘钩子委托实例 ///</summary> ///<remarks> ///不要试图省略此变量,否则将会导致 ///激活CallbackOnCollectedDelegate 托管调试助手(MDA)。 ///详细请参见MSDN中关于CallbackOnCollectedDelegate 的描述 ///</remarks> private HookProc m_KeyboardHookProcedure; // 添加 public event MouseEventHandler OnMouseActivity; private const byte VK_SHIFT = 0x10 ; private const byte VK_CAPITAL = 0x14; private const byte VK_NUMLOCK = 0x90; #endregion私有变量 #region事件定义 ///<summary> ///鼠标更新事件 ///</summary> ///<remarks>当鼠标移动或者滚轮滚动时触发</remarks> public event MouseUpdateEventHandler OnMouseUpdate; ///<summary> ///按键按下事件 ///</summary> public event KeyEventHandler OnKeyDown; ///<summary> ///按键按下并释放事件 ///</summary> public event KeyPressEventHandler OnKeyPress; ///<summary> ///按键释放事件 ///</summary> public event KeyEventHandler OnKeyUp; #endregion事件定义 #region私有方法 ///<summary> ///鼠标钩子处理函数 ///</summary> ///<param name="nCode"></param> ///<param name="wParam"></param> ///<param name="lParam"></param> ///<returns>鼠标钩子处理函数</returns> private int MouseHookProc( int nCode, Int32 wParam, IntPtr lParam ) { if ((nCode >= 0) && (OnMouseActivity != null)) { //Marshall the data from callback. MouseHookStruct mouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct)); //detect button clicked MouseButtons button = MouseButtons.None; short mouseDelta = 0; switch (wParam) { case (int)WM_MOUSE.WM_LBUTTONDOWN: //case WM_LBUTTONUP: //case WM_LBUTTONDBLCLK: button = MouseButtons.Left; break; case (int)WM_MOUSE.WM_RBUTTONDOWN: //case WM_RBUTTONUP: //case WM_RBUTTONDBLCLK: button = MouseButtons.Right; break; case (int)WM_MOUSE.WM_MOUSEWHEEL: //If the message is WM_MOUSEWHEEL, the high-order word of mouseData member is the wheel delta. //One wheel click is defined as WHEEL_DELTA, which is 120. //(value >> 16) & 0xffff; retrieves the high-order word from the given 32-bit value mouseDelta = (short)((mouseHookStruct.MouseData>> 16) & 0xffff); //TODO: X BUTTONS (I havent them so was unable to test) //If the message is WM_XBUTTONDOWN, WM_XBUTTONUP, WM_XBUTTONDBLCLK, WM_NCXBUTTONDOWN, WM_NCXBUTTONUP, //or WM_NCXBUTTONDBLCLK, the high-order word specifies which X button was pressed or released, //and the low-order word is reserved. This value can be one or more of the following values. //Otherwise, mouseData is not used. break; } //double clicks int clickCount = 0; if (button != MouseButtons.None) if (wParam == (int)WM_MOUSE.WM_LBUTTONDBLCLK || wParam == (int)WM_MOUSE.WM_RBUTTONDBLCLK) clickCount = 2; else clickCount = 1; //generate event MouseEventArgs e = new MouseEventArgs( button, clickCount, mouseHookStruct.Point.X, mouseHookStruct.Point.Y, mouseDelta); //raise it OnMouseActivity(this, e); } //* return Win32API.CallNextHookEx( this.m_pMouseHook, nCode, wParam, lParam ); } ///<summary> ///键盘钩子处理函数 ///</summary> ///<param name="nCode"></param> ///<param name="wParam"></param> ///<param name="lParam"></param> ///<returns></returns> ///<remarks></remarks> private int KeyboardHookProc( int nCode, Int32 wParam, IntPtr lParam ) { switch (flags) { case "2": return 1; break; case "1": break; } bool handled = false; //it was ok and someone listens to events if ((nCode >= 0) && (this.OnKeyDown != null || this.OnKeyUp!= null || this.OnKeyPress!= null)) { //read structure KeyboardHookStruct at lParam KeyboardHookStruct MyKeyboardHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct)); //raise KeyDown if (this.OnKeyDown != null && (wParam == (int)WM_KEYBOARD.WM_KEYDOWN || wParam == (int)WM_KEYBOARD.WM_SYSKEYDOWN)) { Keys keyData = (Keys)MyKeyboardHookStruct.VKCode; KeyEventArgs e = new KeyEventArgs(keyData); this.OnKeyDown(this, e); handled = handled || e.Handled; } // raise KeyPress if (this.OnKeyPress != null && wParam == (int)WM_KEYBOARD.WM_KEYDOWN) { bool isDownShift, isDownCapslock; try { isDownShift = ((Win32API.GetKeyStates(VK_SHIFT) & 0x80) == 0x80 ? true : false); isDownCapslock = (Win32API.GetKeyStates(VK_CAPITAL) != 0 ? true : false); } catch { isDownCapslock = false;