线程内键盘钩子实现Winforn快捷键(组合键)代码全都在这里.比较简单..需要的朋友可以拷贝去用.. 发现网上的钩子例子都是使用C++的,C#线程内的钩子很少可以不出错正常运行的..
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Windows.Forms;namespace WindowsFormsApplication6
{
public class KeyboardHook
{
HookProc KeyboardHookProcedure; //声明键盘钩子事件类型.
//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("Kernel32.dll")]
public static extern int GetLastError();
[DllImport("kernel32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
//取线程
[DllImport("kernel32.dll")]
public static extern int GetCurrentThreadId();
static int hKeyboardHook = 0; //键盘钩子句柄
public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);
public const int WH_KEYBOARD = 2; // 键盘消息钩子(线程钩子)
public event KeyEventHandler OnKeyDownEvent;
public KeyboardHook()
{
Start();
}
~KeyboardHook()
{
Stop();
}
/// <summary>
/// 安装钩子
/// </summary>
public void Start()
{
//安装一个线程键盘钩子
if (hKeyboardHook == 0)
{
KeyboardHookProcedure = new HookProc(KeyboardHookProc);
Process curProcess = Process.GetCurrentProcess();
ProcessModule curModule = curProcess.MainModule;
hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD, KeyboardHookProcedure,
IntPtr.Zero, GetCurrentThreadId());
if (hKeyboardHook == 0)
{
Stop();
Console.WriteLine(GetLastError());
throw new Exception("SetWindowsHookEx ist failed.");
}
}
}
/// <summary>
/// 卸载钩子
/// </summary>
public void Stop()
{
bool retKeyboard = true;
if (hKeyboardHook != 0)
{
retKeyboard = UnhookWindowsHookEx(hKeyboardHook);
hKeyboardHook = 0;
}
//如果卸下钩子失败
if (!(retKeyboard))
{
Console.WriteLine(GetLastError());
throw new Exception("UnhookWindowsHookEx failed.");
}
}private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if (nCode >= 0)
{
if (lParam.ToInt32()<0)
{//如果小于0那么是抬起
return 1;
}
Keys keyData = (Keys)wParam;
foreach (ShortKey keyModel in ShortCenter.Instance.Keys)
{
if (keyModel.Key == keyData && (int)Control.ModifierKeys == (int)keyModel.ControlKey)
{
keyModel.DoEvent();
return 1;
}
}
}
return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}
}
}
上面是一个钩子类,主要实现键盘消息拦截,而且是拦截线程内部的..
使用
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;namespace WindowsFormsApplication6
{
public partial class Form3 : Form
{
KeyboardHook hook;
public Form3()
{
InitializeComponent();
hook = new KeyboardHook();
}private void Form3_Load(object sender, EventArgs e)
{
ShortKey @short = new ShortKey();
@short.Key = Keys.S;
@short.ControlKey = Keys.Control;
@short.ExecuteEvent += (object o, EventArgs arg) => { MessageBox.Show( string.Format("你按下了Key:{0},Control:{1}", ((ShortKey)o).Key ,((ShortKey)o).ControlKey)); };
ShortCenter.Instance.Keys.Add(@short);
@short
= new ShortKey();@short
= new ShortKey(); }
}
}
private Keys _key;}
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