winform使用钩子限制windows热键
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winform使用钩子限制windows热键
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新增類KeybordHookProc
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms; namespace HookDemo
{
/// <summary>
/// 這個類可以讓你得到一個在運行中程序的所有鍵盤事件
/// 并且引發一個帶KeyEventArgs和MouseEventArgs參數的.NET事件以便你很容易使用這些信息
/// </summary>
public class KeyBordHook
{ private const byte LLKHF_ALTDOWN = 0x20;
private const byte VK_CAPITAL = 0x14;
private const byte VK_ESCAPE = 0x1B;
private const byte VK_F4 = 0x73;
private const byte VK_LCONTROL = 0xA2;
private const byte VK_NUMLOCK = 0x90;
private const byte VK_RCONTROL = 0xA3;
private const byte VK_SHIFT = 0x10;
private const byte VK_TAB = 0x09;
public const int WH_KEYBOARD = ;
private const int WH_MOUSE = ;
private const int WH_MOUSE_LL = ;
private const int WM_KEYDOWN = 0x100;
private const int WM_KEYUP = 0x101;
private const int WM_LBUTTONDBLCLK = 0x203;
private const int WM_LBUTTONDOWN = 0x201;
private const int WM_LBUTTONUP = 0x202;
private const int WM_MBUTTONDBLCLK = 0x209;
private const int WM_MBUTTONDOWN = 0x207;
private const int WM_MBUTTONUP = 0x208;
private const int WM_MOUSEMOVE = 0x200;
private const int WM_MOUSEWHEEL = 0x020A;
private const int WM_RBUTTONDBLCLK = 0x206;
private const int WM_RBUTTONDOWN = 0x204;
private const int WM_RBUTTONUP = 0x205;
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 = ; //鍵盤鉤子句柄 //鼠標常量
public const int WH_KEYBOARD_LL = ; //keyboard hook constant HookProc KeyboardHookProcedure; //聲明鍵盤鉤子事件類型. //聲明鍵盤鉤子的封送結構類型
[StructLayout(LayoutKind.Sequential)]
public class KeyboardHookStruct
{
public int vkCode; //表示一個在1到254間的虛似鍵盤碼
public int scanCode; //表示硬件掃描碼
public int flags;
public int time;
public int dwExtraInfo;
} //裝置鉤子的函數
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId); //卸下鉤子的函數
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern bool UnhookWindowsHookEx(int idHook); //下一個鉤掛的函數
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam); //取得當前線程編號
[DllImport("kernel32.dll")]
private static extern int GetCurrentThreadId(); [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
private static extern short GetKeyState(int vKey); public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam); /// <summary>
/// 墨認的構造函數構造當前類的實例并自動的運行起來.
/// </summary>
public KeyBordHook()
{
Start();
} //析構函數.
~KeyBordHook()
{
Stop();
} /// <summary>
/// 啟動Hook，并用流屏蔽任務管理器
/// </summary>
public void Start()
{
if (hKeyboardHook == )
{
// 創建HookProc實例
KeyboardHookProcedure = new HookProc(KeyboardHookProc); hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD,
KeyboardHookProcedure,
Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[]),
); // 如果設置鉤子失敗
if (hKeyboardHook == )
{
Stop();
AppLog.Error("SetWindowsHookEx failed.");
} ////用二進制流的方法打開任務管理器。而且不關閉流.這樣任務管理器就打開不了
//MyFs = new FileStream(Environment.ExpandEnvironmentVariables("%windir%\\system32\\taskmgr.exe"),
// FileMode.Open);
//byte[] MyByte = new byte[(int)MyFs.Length];
//MyFs.Write(MyByte, 0, (int)MyFs.Length);
}
} /// <summary>
/// 卸載Hook
/// </summary>
public void Stop()
{
bool retKeyboard = true; if (hKeyboardHook != )
{
retKeyboard = UnhookWindowsHookEx(hKeyboardHook); hKeyboardHook = ;
} //if (null != MyFs)
//{
// MyFs.Close();
//} if (!(retKeyboard))
{
AppLog.Error("UnhookWindowsHookEx failed.");
}
} #region Nested type: KeyMSG public struct KeyMSG
{
public int dwExtraInfo;
public int flags;
public int scanCode; public int time;
public int vkCode;
} #endregion /// <summary>
/// 鍵盤鉤子
/// </summary>
/// <param name="nCode"></param>
/// <param name="wParam"></param>
/// <param name="lParam"></param>
/// <returns></returns>
private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
KeyboardHookStruct m = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct)); AppLog.Debug($"nCode is :{nCode} -- vkCode is :{m.vkCode}");
if (m.vkCode == (int)Keys.LWin ||
m.vkCode == (int)Keys.RWin ||
m.vkCode == (int)Keys.LWin && m.vkCode == (int)Keys.D ||
m.vkCode == (int)Keys.RWin && m.vkCode == (int)Keys.D ||
m.vkCode == (int)Keys.Escape && (int)Control.ModifierKeys == (int)Keys.Control ||
m.vkCode == (int)Keys.F4 && (int)Control.ModifierKeys == (int)Keys.Alt ||
m.vkCode == (int)Keys.Escape && (int)Control.ModifierKeys == (int)Keys.Alt ||
m.vkCode == (int)Keys.Tab && (int)Control.ModifierKeys == (int)Keys.Alt ||
m.vkCode == (int)Keys.Escape && (int)Control.ModifierKeys == (int)Keys.Control + (int)Keys.Shift ||
(int)Control.ModifierKeys == (int)Keys.Control + (int)Keys.Alt + (int)Keys.Delete
)
{
AppLog.Info("hooc is OK");
return ;
} return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
} }
}
添加鍵盤按鍵觸發事件
/// <summary>
/// 鍵盤按下觸發事件
/// </summary>
void kh_OnKeyDownEvent(object sender, KeyEventArgs e)
{ }
鍵盤鉤子的使用
/// <summary>
/// 鍵盤鉤子
/// </summary>
KeyBordHook _keyBordHook;
//鍵盤鉤子實例化
_keyBordHook = new KeyBordHook();
_keyBordHook.OnKeyDownEvent += kh_OnKeyDownEvent;
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