C# 锁定键盘，鼠标代码,CSharp代码库,德仔网

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【CSharp】 C# 锁定键盘，鼠标
作者: / 发布于2011/1/12/ 542
<div>using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using System.Diagnostics;</div>
<div>namespace WorkHelper
{
 class SysHook
 {
 [DllImport("user32")]
 public static extern bool BlockInput(bool isBlock);
 [DllImport(@"native.dll", EntryPoint = "FuckSysKey")]
 private extern static bool FuckSysKey(bool enAble);</div>
<div> public void BlockKeyAndMouse(bool b)
 {
 BlockInput(b);
 FuckSysKey(b);//锁定ctrl+alt+del
 }
 public delegate int HookProc(int nCode, int wParam, IntPtr lParam);
 static int hHook = 0;
 public const int WH_KEYBOARD_LL = 13;</div>
<div> //LowLevel键盘截获，如果是WH_KEYBOARD＝2，并不能对系统键盘截取，Acrobat Reader会在你截取之前获得键盘。 
 HookProc KeyBoardHookProcedure;</div>
<div> //键盘Hook结构函数 
 [StructLayout(LayoutKind.Sequential)]
 public class KeyBoardHookStruct
 {
 public int vkCode;
 public int scanCode;
 public int flags;
 public int time;
 public int dwExtraInfo;
 }
<div> #region DllImport
 //设置钩子 
 [DllImport("user32.dll")]
 public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);
 [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
 //抽掉钩子 
 public static extern bool UnhookWindowsHookEx(int idHook);
 [DllImport("user32.dll")]
 //调用下一个钩子 
 public static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam);</div>
<div> [DllImport("kernel32.dll")]
 public static extern int GetCurrentThreadId();</div>
<div> [DllImport("kernel32.dll")]
 public static extern IntPtr GetModuleHandle(string name);</div>
<div> public void Hook_Start()
 {
 // 安装键盘钩子 
 if (hHook == 0)
 {
 KeyBoardHookProcedure = new HookProc(KeyBoardHookProc);</div>
<div> //hHook = SetWindowsHookEx(2, 
 // KeyBoardHookProcedure, 
 // GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), GetCurrentThreadId());</div>
<div> hHook = SetWindowsHookEx(WH_KEYBOARD_LL,
 KeyBoardHookProcedure,
 GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), 0);
 
 //如果设置钩子失败. 
 if (hHook == 0)
 {
 Hook_Clear();
 
 //throw new Exception("设置Hook失败!"); 
 }
 }
 }
<div> //取消钩子事件 
 public void Hook_Clear()
 {
 bool retKeyboard = true;
 if (hHook != 0)
 {
 retKeyboard = UnhookWindowsHookEx(hHook);
 hHook = 0;
 }
 //如果去掉钩子失败. 
 if (!retKeyboard) throw new Exception("UnhookWindowsHookEx failed.");
 
 }
<div> //这里可以添加自己想要的信息处理 
 public static int KeyBoardHookProc(int nCode, int wParam, IntPtr lParam)
 {
 if (nCode >= 0)
 {
 KeyBoardHookStruct kbh = (KeyBoardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyBoardHookStruct));
 // MessageBox.Show(kbh.vkCode.ToString());</div>
<div> if (kbh.vkCode != 32)
 {
 return 1;
 }
 }
 return CallNextHookEx(hHook, nCode, wParam, lParam);
 }
<div> #endregion</div>
<div> }
}
<div>
调用</div>
<div>
 SysHook h = new SysHook();</div>
<div> h.Hook_Start();//锁定键盘
 h.Hook_Clear();//解锁
 h.BlockKeyAndMouse(true);//锁定键盘和鼠标，包括任务管理器热键
</div>
<div></div>
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