vs2010 C# 键盘钩子
using System;
using System.Runtime.InteropServices;
using System.Reflection;
using System.Windows.Forms;
namespace KeyboardHook
{
public enum KeyboardEvents
{
KeyDown = 0x0100,
KeyUp = 0x0101,
SystemKeyDown = 0x0104,
SystemKeyUp = 0x0105
}
[StructLayout(LayoutKind.Sequential)]
public struct 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;
}
public delegate void KeyboardEventHandler(KeyboardEvents keyEvent, System.Windows.Forms.Keys key);
public class Hook
{
public event KeyboardEventHandler KeyboardEvent;
public enum HookType
{
WH_JOURNALRECORD = 0,
WH_JOURNALPLAYBACK = 1,
WH_KEYBOARD = 2,
WH_GETMESSAGE = 3,
WH_CALLWNDPROC = 4,
WH_CBT = 5,
WH_SYSMSGFILTER = 6,
WH_MOUSE = 7,
WH_HARDWARE = 8,
WH_DEBUG = 9,
WH_SHELL = 10,
WH_FOREGROUNDIDLE = 11,
WH_CALLWNDPROCRET = 12,
WH_KEYBOARD_LL = 13,
WH_MOUSE_LL = 14,
WH_MSGFILTER = -1,
}
public delegate IntPtr HookProc(int code, int wParam, IntPtr lParam);
[DllImport("User32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr SetWindowsHookEx(HookType hookType, HookProc hook, IntPtr instance, int threadID);
[DllImport("User32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr CallNextHookEx(IntPtr hookHandle, int code, int wParam, IntPtr lParam);
[DllImport("User32.dll", CharSet = CharSet.Auto)]
public static extern bool UnhookWindowsHookEx(IntPtr hookHandle);
private IntPtr instance;
private IntPtr hookHandle;
private int threadID;
private HookProc hookProcEx;
public Hook()
{
this.instance =
Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]);
this.threadID = 0;
hookHandle = IntPtr.Zero;
hookProcEx = new HookProc(hookProc);
}
public bool SetHook()
{
this.hookHandle = SetWindowsHookEx(HookType.WH_KEYBOARD_LL, hookProcEx, this.instance, this.threadID);
return ((int)hookHandle != 0);
}
public IntPtr hookProc(int code, int wParam, IntPtr lParam)
{
if (code >= 0)
{
KeyboardEvents kEvent = (KeyboardEvents)wParam;
if (kEvent != KeyboardEvents.KeyDown &&
kEvent != KeyboardEvents.KeyUp &&
kEvent != KeyboardEvents.SystemKeyDown &&
kEvent != KeyboardEvents.SystemKeyUp)
{
return CallNextHookEx(this.hookHandle, (int)HookType.WH_KEYBOARD_LL, wParam, lParam);
}
KeyboardHookStruct MyKey = new KeyboardHookStruct();
Type t = MyKey.GetType();
MyKey = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, t);
Keys keyData = (Keys)MyKey.vkCode;
KeyboardEvent(kEvent, keyData);
}
return CallNextHookEx(this.hookHandle, (int)HookType.WH_KEYBOARD_LL, wParam, lParam);
}
public bool UnHook()
{
return Hook.UnhookWindowsHookEx(this.hookHandle);
}
}
}
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资源详情
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