在做嵌入程序时，想要获取鼠标的一些事件，然后执行特定的逻辑。去网上找到了相关的有用的一些信息。现记录如下。
首先需要声明三个类 （Hook.cs HookHelper.cs Win32API.cs）
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; namespace TestHook.MyHook { public class Hook { #region 定义变量 //定义鼠标钩子处理函数 private Win32API.HookProc MouseHookProcedure = null; //定义键盘钩子处理函数 private Win32API.HookProc KeyboardProcDelegate = null; //定义键盘钩子句柄 private IntPtr khook; //定义鼠标钩子句柄 private IntPtr hHook = IntPtr.Zero; //定义鼠标事件 public event MouseEventHandler OnMouseActivity; #endregion /// <summary> /// 安装钩子 /// </summary> public void InstallHook(HookHelper.HookType hookType) { if (hookType == HookHelper.HookType.KeyOperation) { if (khook == IntPtr.Zero)//键盘钩子 { uint id = Win32API.GetCurrentThreadId(); this.KeyboardProcDelegate = new Win32API.HookProc(this.KeyboardProc); khook = Win32API.SetWindowsHookEx((IntPtr)HookHelper.WH_Codes.WH_KEYBOARD_LL, this.KeyboardProcDelegate, IntPtr.Zero, id); } } else { if (hHook == IntPtr.Zero)//鼠标钩子 { uint id = Win32API.GetCurrentThreadId(); this.MouseHookProcedure = new Win32API.HookProc(this.MouseHookProc); //这里挂节钩子 hHook = Win32API.SetWindowsHookEx((IntPtr)HookHelper.WH_Codes.WH_MOUSE_LL, MouseHookProcedure, IntPtr.Zero, id); } } } /// <summary> /// 卸载鼠标钩子 /// </summary> public void UnInstallHook(HookHelper.HookType hookType) { bool isSuccess = false; if (hookType == HookHelper.HookType.KeyOperation)//键盘钩子 { if (khook != IntPtr.Zero) { isSuccess = Win32API.UnhookWindowsHookEx(khook); this.khook = IntPtr.Zero; } } else { if (this.hHook != IntPtr.Zero)//鼠标钩子 { isSuccess = Win32API.UnhookWindowsHookEx(hHook); this.hHook = IntPtr.Zero; } } if (isSuccess) { MessageBox.Show("卸载成功！"); } else { MessageBox.Show("卸载失败！"); } } /// <summary> /// 鼠标钩子处理函数 /// </summary> /// <param name="nCode"></param> /// <param name="wParam"></param> /// <param name="lParam"></param> /// <returns></returns> public bool btnUp = false; public bool btnMove = false; private int MouseHookProc(int nCode, IntPtr wParam, IntPtr lParam) { if (nCode < (int)HookHelper.WH_Codes.HC_ACTION) { return Win32API.CallNextHookEx(hHook, nCode, wParam, lParam); } if (OnMouseActivity != null) { //Marshall the data from callback. HookHelper.MouseHookStruct mouseHookStruct = (HookHelper.MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(HookHelper.MouseHookStruct)); MouseButtons button = MouseButtons.None; short mouseDelta = 0; int clickCount = 0;//点击数 bool move = false; switch ((int)wParam) { case (int)HookHelper.WM_MOUSE.WM_LBUTTONDOWN: //case WM_LBUTTONUP: //case WM_LBUTTONDBLCLK: button = MouseButtons.Left; btnUp = false; break; case (int)HookHelper.WM_MOUSE.WM_RBUTTONDOWN: //case WM_RBUTTONUP: //case WM_RBUTTONDBLCLK: button = MouseButtons.Right; break; case (int)HookHelper.WM_MOUSE.WM_MOUSEWHEEL: //button = MouseButtons.Middle;//滚动轮 //(value >> 16) & 0xffff; retrieves the high-order word from the given 32-bit value mouseDelta = (short)((mouseHookStruct.MouseData >> 16) & 0xffff); break; case (int)HookHelper.WM_MOUSE.WM_LBUTTONDBLCLK: //鼠标双击 button = MouseButtons.Left; clickCount = 2; break; case (int)HookHelper.WM_MOUSE.WM_RBUTTONUP: btnUp = true; break; case (int)HookHelper.WM_MOUSE.WM_MOUSEMOVE: //鼠标移动 btnMove = true; btnUp = false; break; } //if (button != MouseButtons.None) //{ // if ((int)wParam == (int)HookHelper.WM_MOUSE.WM_LBUTTONDBLCLK || (int)wParam == (int)HookHelper.WM_MOUSE.WM_RBUTTONDBLCLK) // { // clickCount = 2;//双击 // } // else // { // clickCount = 1;//单击 // } //} //鼠标事件传递数据 MouseEventArgs e = new MouseEventArgs(button, clickCount, mouseHookStruct.Point.X, mouseHookStruct.Point.Y, mouseDelta); //重写事件 OnMouseActivity(this, e); } return Win32API.CallNextHookEx(hHook, nCode, wParam, lParam); } /// <summary> /// 键盘钩子处理函数 /// </summary> /// <param name="code"></param> /// <param name="wParam"></param> /// <param name="lParam"></param> /// <returns></returns> private int KeyboardProc(int nCode, IntPtr wParam, IntPtr lParam) { try { if (nCode < (int)HookHelper.WH_Codes.HC_ACTION) { return Win32API.CallNextHookEx((IntPtr)khook, nCode, wParam, lParam); } HookHelper.KeyboardHookStruct keyHookStruct = (HookHelper.KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(HookHelper.KeyboardHookStruct)); #region //if ((int)wParam == (int)Keys.C && ((int)lParam & (int)Keys.ControlKey) != 0 ||//Ctrl+C // (int)wParam == (int)Keys.X && ((int)lParam & (int)Keys.ControlKey) != 0)//Ctrl+V //{ // MessageBox.Show("C||V"); //} //if (lParam.ToInt32() > 0)//捕获键盘按下 //{ // Keys keys = (Keys)wParam; // MessageBox.Show("键盘按下"); //} //if (lParam.ToInt32() < 0)//捕获键盘抬起 //{ // MessageBox.Show("键盘抬起"); //} /**************** //全局键盘钩子判断是否按下键 wParam = = 0x100 // 键盘按下 wParam = = 0x101 // 键盘抬起 ****************/ //return 0;//如果返回1,则结束消息,消息截止,不再传递。如果返回0或调用CallNextHookEx函数,消息出这个钩子继续往下传递。 #endregion } catch { } return Win32API.CallNextHookEx(khook, nCode, wParam, lParam); } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace TestHook.MyHook { public class HookHelper { #region 枚举定义 /// <summary> /// 操作类型 /// </summary> public enum HookType { KeyOperation,//键盘操作 MouseOperation//鼠标操作 } /// <summary> /// 底层钩子标识 /// </summary> public enum WH_Codes : int { //底层键盘钩子 WH_KEYBOARD_LL = 2,//2:监听键盘消息并且是线程钩子；13：全局鼠标钩子监听 //底层鼠标钩子 WH_MOUSE_LL = 7, //7：监听鼠标钩子；14:全局键盘钩子监听鼠标信息 //nCode为0 HC_ACTION = 0 } /// <summary> /// 鼠标按钮标识 /// </summary> public enum WM_MOUSE : int { /// <summary> /// 鼠标开始 /// </summary> WM_MOUSEFIRST = 0x200, /// <summary> /// 鼠标移动 /// </summary> WM_MOUSEMOVE = 0x200, /// <summary> /// 左键按下 /// </summary> WM_LBUTTONDOWN = 0x201, /// <summary> /// 左键释放 /// </summary> WM_LBUTTONUP = 0x202, /// <summary> /// 左键双击 /// </summary> WM_LBUTTONDBLCLK = 0x203, /// <summary> /// 右键按下 /// </summary> WM_RBUTTONDOWN = 0x204, /// <summary> /// 右键释放 /// </summary> WM_RBUTTONUP = 0x205, /// <summary> /// 右键双击 /// </summary> WM_RBUTTONDBLCLK = 0x206, /// <summary> /// 中键按下 /// </summary> WM_MBUTTONDOWN = 0x207, /// <summary> /// 中键释放 /// </summary> WM_MBUTTONUP = 0x208, /// <summary> /// 中键双击 /// </summary> WM_MBUTTONDBLCLK = 0x209, /// <summary> /// 滚轮滚动 /// </summary> /// <remarks>WINNT4.0以上才支持此消息</remarks> WM_MOUSEWHEEL = 0x020A } /// <summary> /// 键盘按键标识 /// </summary> public enum WM_KEYBOARD : int { /// <summary> /// 非系统按键按下 /// </summary> WM_KEYDOWN = 0x100, /// <summary> /// 非系统按键释放 /// </summary> WM_KEYUP = 0x101, /// <summary> /// 系统按键按下 /// </summary> WM_SYSKEYDOWN = 0x104, /// <summary> /// 系统按键释放 /// </summary> WM_SYSKEYUP = 0x105 } /// <summary> /// SetWindowPos标志位枚举 /// </summary> /// <remarks>详细说明,请参见MSDN中关于SetWindowPos函数的描述</remarks> public enum SetWindowPosFlags : int { /// <summary> /// /// </summary> SWP_NOSIZE = 0x0001, /// <summary> /// /// </summary> SWP_NOMOVE = 0x0002, /// <summary> /// /// </summary> SWP_NOZORDER = 0x0004, /// <summary> /// /// </summary> SWP_NOREDRAW = 0x0008, /// <summary> /// /// </summary> SWP_NOACTIVATE = 0x0010, /// <summary> /// /// </summary> SWP_FRAMECHANGED = 0x0020, /// <summary> /// /// </summary> SWP_SHOWWINDOW = 0x0040, /// <summary> /// /// </summary> SWP_HIDEWINDOW = 0x0080, /// <summary> /// /// </summary> SWP_NOCOPYBITS = 0x0100, /// <summary> /// /// </summary> SWP_NOOWNERZORDER = 0x0200, /// <summary> /// /// </summary> SWP_NOSENDCHANGING = 0x0400, /// <summary> /// /// </summary> SWP_DRAWFRAME = 0x0020, /// <summary> /// /// </summary> SWP_NOREPOSITION = 0x0200, /// <summary> /// /// </summary> SWP_DEFERERASE = 0x2000, /// <summary> /// /// </summary> SWP_ASYNCWINDOWPOS = 0x4000 } #endregion 枚举定义 #region 结构定义 [StructLayout(LayoutKind.Sequential)] public struct POINT { public int X; public int Y; } /// <summary> /// 鼠标钩子事件结构定义 /// </summary> /// <remarks>详细说明请参考MSDN中关于 MSLLHOOKSTRUCT 的说明</remarks> [StructLayout(LayoutKind.Sequential)] public struct MouseHookStruct { /// <summary> /// Specifies a POINT structure that contains the x- and y-coordinates of the cursor, in screen coordinates. /// </summary> public POINT Point; public UInt32 MouseData; public UInt32 Flags; public UInt32 Time; public UInt32 ExtraInfo; } /// <summary> /// 键盘钩子事件结构定义 /// </summary> /// <remarks>详细说明请参考MSDN中关于 KBDLLHOOKSTRUCT 的说明</remarks> [StructLayout(LayoutKind.Sequential)] public struct KeyboardHookStruct { /// <summary> /// Specifies a virtual-key code. The code must be a value in the range 1 to 254. /// </summary> public UInt32 VKCode; /// <summary> /// Specifies a hardware scan code for the key. /// </summary> public UInt32 ScanCode; /// <summary> /// Specifies the extended-key flag, event-injected flag, context code, /// and transition-state flag. This member is specified as follows. /// An application can use the following values to test the keystroke flags. /// </summary> public UInt32 Flags; /// <summary> /// Specifies the time stamp for this message. /// </summary> public UInt32 Time; /// <summary> /// Specifies extra information associated with the message. /// </summary> public UInt32 ExtraInfo; } #endregion 结构定义 } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace TestHook.MyHook { class Win32API { #region DLL导入 /// <summary> /// 用于设置窗口 /// </summary> /// <param name="hWnd"></param> /// <param name="hWndInsertAfter"></param> /// <param name="X"></param> /// <param name="Y"></param> /// <param name="cx"></param> /// <param name="cy"></param> /// <param name="uFlags"></param> /// <returns></returns> [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)] public static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X, int Y, int cx, int cy, int uFlags); /// <summary> /// 安装钩子 /// </summary> /// <param name="idHook">钩子类型,鼠标\键盘\巨集等10几种</param> /// <param name="lpfn">挂钩的函数,用来处理拦截消息的函数,全局函数</param> /// <param name="hInstance">当前进程的句柄, /// 为NULL:当前进程创建的一个线程,子程位于当前进程； /// 为0(IntPtr.Zero):钩子子程与所有的线程关联，即为全局钩子</param> /// <param name="threadId">设置要挂接的线程ID.为NULL则为全局钩子</param> /// <returns></returns> [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)] public static extern IntPtr SetWindowsHookEx(IntPtr idHook, HookProc lpfn, IntPtr pInstance, uint threadId); /// <summary> /// 卸载钩子 /// </summary> /// <param name="idHook"></param> /// <returns></returns> [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)] public static extern bool UnhookWindowsHookEx(IntPtr pHookHandle); /// <summary> /// 传递钩子 /// 用于把拦截的消息继续传递下去，不然其他程序可能会得不到相应的消息 /// </summary> /// <param name="idHook"></param> /// <param name="nCode"></param> /// <param name="wParam"></param> /// <param name="lParam"></param> /// <returns></returns> [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)] public static extern int CallNextHookEx(IntPtr pHookHandle, int nCode, IntPtr wParam, IntPtr lParam); /// <summary> /// 转换当前按键信息 /// </summary> /// <param name="uVirtKey"></param> /// <param name="uScanCode"></param> /// <param name="lpbKeyState"></param> /// <param name="lpwTransKey"></param> /// <param name="fuState"></param> /// <returns></returns> [DllImport("user32.dll")] public static extern int ToAscii(UInt32 uVirtKey, UInt32 uScanCode, byte[] lpbKeyState, byte[] lpwTransKey, UInt32 fuState); /// <summary> /// 获取按键状态 /// </summary> /// <param name="pbKeyState"></param> /// <returns>非0表示成功</returns> [DllImport("user32.dll")] public static extern int GetKeyboardState(byte[] pbKeyState); [DllImport("user32.dll")] public static extern short GetKeyStates(int vKey); /// <summary> /// 获取当前线程Id /// </summary> /// <returns></returns> [DllImport("kernel32.dll")] public static extern uint GetCurrentThreadId(); /// <summary> /// 截屏位置 /// </summary> /// <param name="hdcDest">目标设备的句柄 </param> /// <param name="nXDest">目标对象的左上角的X坐标</param> /// <param name="nYDest">目标对象的左上角的Y坐标</param> /// <param name="nWidth">目标对象的矩形的宽度</param> /// <param name="nHeight">目标对象的矩形的高度 </param> /// <param name="hdcSrc">源设备的句柄 </param> /// <param name="nXSrc">源对象的左上角的X坐标 </param> /// <param name="nYSrc">源对象的左上角的Y坐标 </param> /// <param name="dwRop">光栅的操作值 </param> /// <returns></returns> [DllImportAttribute("gdi32.dll")] private static extern bool BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, System.Int32 dwRop); /// <summary> /// /// </summary> /// <param name="lpszDriver">驱动名称</param> /// <param name="lpszDevice">设备名称</param> /// <param name="lpszOutput">无用，可以设定为"NULL"</param> /// <param name="lpInitData">任意的打印机数据</param> /// <returns></returns> [DllImportAttribute("gdi32.dll")] private static extern IntPtr CreateDC(string lpszDriver, string lpszDevice, string lpszOutput, IntPtr lpInitData); #endregion DLL导入 /// <summary> /// 钩子委托声明 /// </summary> /// <param name="nCode"></param> /// <param name="wParam"></param> /// <param name="lParam"></param> /// <returns></returns> public delegate int HookProc(int nCode, IntPtr wParam, IntPtr lParam); } }
然后最后如果需要用的话就在 某个函数里调用，方法如下
private Hook hook = new Hook();//总钩子控制 void go() { hook.InstallHook(HookHelper.HookType.MouseOperation); hook.OnMouseActivity += new MouseEventHandler(hook_OnMouseActivity); } void hook_OnMouseActivity(object sender, MouseEventArgs e) { //你的逻辑。 //通过e.XX 来获取鼠标的事件的相关信息（左右键，按下抬起，坐标等） }
//因为翻了很多博客，所以那些是从哪里copy下来的我也不知道出处了。所以就只能在标题写个转载了。