C#全局鼠标键盘Hook
2024-10-12 23:29:58
原文出自:http://www.cnblogs.com/iEgrhn/archive/2008/02/17/1071392.html
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms; namespace DCIEngine.FrameWork.Snap
{
/// <summary>
/// 这个类可以让你得到一个在运行中程序的所有键盘或鼠标事件
/// 并且引发一个带KeyEventArgs参数的.NET事件以便你很容易使用这些信息
/// </summary> public class KeyBordHook
{
private const int WM_KEYDOWN = 0x100;
private const int WM_KEYUP = 0x101;
private const int WM_SYSKEYDOWN = 0x104;
private const int WM_SYSKEYUP = 0x105; //全局的事件
public event KeyEventHandler OnKeyDownEvent;
public event KeyEventHandler OnKeyUpEvent;
public event KeyPressEventHandler OnKeyPressEvent;
static int hKeyboardHook = ; //键盘钩子句柄
//鼠标常量
public const int WH_KEYBOARD_LL = ; //keyboard hook constant
HookProc KeyboardHookProcedure; //声明键盘钩子事件类型.
//声明键盘钩子的封送结构类型
[StructLayout(LayoutKind.Sequential)]
public class KeyboardHookStruct
{
public int vkCode; //表示一个在1到254间的虚似键盘码
public int scanCode; //表示硬件扫描码
public int flags;
public int time;
public int dwExtraInfo;
}
//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);
[DllImport("user32 ")]
public static extern int ToAscii(int uVirtKey, int uScanCode, byte[] lpbKeyState, byte[] lpwTransKey, int fuState);
[DllImport("user32 ")]
public static extern int GetKeyboardState(byte[] pbKeyState);
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并自动的运行起来.
/// </summary>
public KeyBordHook()
{
Start();
}
//析构函数.
~KeyBordHook()
{
Stop();
}
public void Start()
{
//安装键盘钩子
if (hKeyboardHook == )
{
KeyboardHookProcedure = new HookProc(KeyboardHookProc);
hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyboardHookProcedure, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().ManifestModule), );
if (hKeyboardHook == )
{
Stop();
throw new Exception("SetWindowsHookEx ist failed. ");
}
}
}
public void Stop()
{
bool retKeyboard = true; if (hKeyboardHook != )
{
retKeyboard = UnhookWindowsHookEx(hKeyboardHook);
hKeyboardHook = ;
}
//如果卸下钩子失败
if (!(retKeyboard)) throw new Exception("UnhookWindowsHookEx failed. ");
}
private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if ((nCode >= ) && (OnKeyDownEvent != null || OnKeyUpEvent != null || OnKeyPressEvent != null))
{
KeyboardHookStruct MyKeyboardHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));
//引发OnKeyDownEvent
if (OnKeyDownEvent != null && (wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN))
{
Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;
KeyEventArgs e = new KeyEventArgs(keyData);
OnKeyDownEvent(this, e);
} //引发OnKeyPressEvent
if (OnKeyPressEvent != null && wParam == WM_KEYDOWN)
{
byte[] keyState = new byte[];
GetKeyboardState(keyState);
byte[] inBuffer = new byte[];
if (ToAscii(MyKeyboardHookStruct.vkCode,
MyKeyboardHookStruct.scanCode,
keyState,
inBuffer,
MyKeyboardHookStruct.flags) == )
{
KeyPressEventArgs e = new KeyPressEventArgs((char)inBuffer[]);
OnKeyPressEvent(this, e);
}
} //引发OnKeyUpEvent
if (OnKeyUpEvent != null && (wParam == WM_KEYUP || wParam == WM_SYSKEYUP))
{
Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;
KeyEventArgs e = new KeyEventArgs(keyData);
OnKeyUpEvent(this, e);
}
}
return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}
} /// <summary>
/// 这个类可以让你得到一个在运行中程序的所有鼠标事件
/// 并且引发一个带MouseEventArgs参数的.NET鼠标事件以便你很容易使用这些信息
/// </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;
//全局的事件
public event MouseEventHandler OnMouseActivity;
static int hMouseHook = ; //鼠标钩子句柄
//鼠标常量
public const int WH_MOUSE_LL = ; //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;
}
//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()
{
//Start();
}
//析构函数.
~MouseHook()
{
Stop();
}
public void Start()
{
//安装鼠标钩子
if (hMouseHook == )
{
//生成一个HookProc的实例.
MouseHookProcedure = new HookProc(MouseHookProc);
hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookProcedure, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[]), );
//如果装置失败停止钩子
if (hMouseHook == )
{
Stop();
throw new Exception("SetWindowsHookEx failed. ");
}
}
}
public void Stop()
{
bool retMouse = true;
if (hMouseHook != )
{
retMouse = UnhookWindowsHookEx(hMouseHook);
hMouseHook = ;
} //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 >= ) && (OnMouseActivity != null))
{
MouseButtons button = MouseButtons.None;
int clickCount = ;
switch (wParam)
{
case WM_LBUTTONDOWN:
button = MouseButtons.Left;
clickCount = ;
break;
case WM_LBUTTONUP:
button = MouseButtons.Left;
clickCount = ;
break;
case WM_LBUTTONDBLCLK:
button = MouseButtons.Left;
clickCount = ;
break;
case WM_RBUTTONDOWN:
button = MouseButtons.Right;
clickCount = ;
break;
case WM_RBUTTONUP:
button = MouseButtons.Right;
clickCount = ;
break;
case WM_RBUTTONDBLCLK:
button = MouseButtons.Right;
clickCount = ;
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, );
OnMouseActivity(this, e);
}
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}
}
}
在VS中直接运行，HOOK将会失败。
必须生成Release然后直接运行EXE才能生效。。
如果失败的话，可以把回调寒函数设置成静态的
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