功能强大，可屏蔽绝大多数Windows快捷键，Ctrl+ALt+Delete也进行了间接屏蔽

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); } } }

这是 Visual C++ 典型模块与项目实战大全 清华大学出版社 第11章 截屏工具（动态链接库+键盘钩子+光标捕获+类橡皮类CRectTracker） 源码，为了防止光盘丢失，特存于此。

运行后无法杀掉其进程，可屏蔽键盘。不过对360保险箱保护的进程无法嵌入。

C++实现的键盘记录小程序，其中的文档保存路径需要自己修改一下，然后重新生成dll，并将新生成的dll文件放到keyBoard的目录下。

C语言编写的键盘钩子源码，记录每一个按键信息。可记录中文信息！仅限个人用途，注意安全！欢迎使用~~~

C#调用键盘钩子锁屏,禁用快捷键！ C# .NET锁屏程序（顺带屏蔽任务管理器） 第一步：将窗体的FormBorderStyle设置为none，WindowState设为Maximized 占据整个屏幕。 第二步：使用钩子监控全局键盘事件。即屏蔽掉大部分系统热键。但是屏蔽ctrl+alt+del 任务管理器则较复杂，这个特例后面讨论。 使用全局钩子应该注意的地方：将代码放到一个独立的类库里面（只有dll才能被注射到其他进程中）。

C#Hook键盘钩子(winform)，用于屏蔽alt+f4,alt+tab,ctl+esc,win键,任务管理器等(可自定义),类似于锁屏

https://dreamlife.blog.csdn.net/article/details/123084722

这是一个很强的键盘钩子，它可以监控全局的按键消息，包括按键时Shift,Alt,Ctrl,CapsLock,NumLock键的状态值，这是一个不可多得的工具。切记！！！不可按Ctrl+Esc键组合，否则死锁！！！这是Windows钩子系统的一个BUG。（内附源码，Delphi7通过，WinXP通过）