键盘HOOK的简单实现(VC2003)

最新推荐文章于 2025-09-12 16:42:06 发布

转载最新推荐文章于 2025-09-12 16:42:06 发布 · 300 阅读

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#hook #callback #keyboard #fp #class #file

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本文介绍了一个简单的键盘钩子实现方案，通过安装全局键盘钩子监听按键事件，并将记录的按键写入日志文件中。文章提供了完整的KeyProcHook类定义及其实现细节。

KeyProcHook.h文件代码 #pragma once #include class KeyProcHook { public: KeyProcHook(void); ~KeyProcHook(void); bool InstallHOOK(HINSTANCE hinstance); bool UninstallHOOK(void); }; KeyProcHook.cpp文件代码 #include "StdAfx.h" #include "./KeyProcHook.h" #pragma data_seg ("shared") HINSTANCE g_hInst; static HHOOK g_hHook = NULL; #pragma data_seg () LRESULT CALLBACK KeyboardProc(int iCode,WPARAM wParam,LPARAM lParam); KeyProcHook::KeyProcHook(void) { } KeyProcHook::~KeyProcHook(void) { } // bool KeyProcHook::InstallHOOK(HINSTANCE hinstance) { g_hInst = AfxGetInstanceHandle(); g_hHook=SetWindowsHookEx(WH_KEYBOARD,KeyboardProc,g_hInst,0); if (g_hHook) return TRUE; else return FALSE; } // bool KeyProcHook::UninstallHOOK(void) { if (UnhookWindowsHookEx(g_hHook)==0) return FALSE; else return TRUE; } // LRESULT CALLBACK KeyboardProc( int iCode, // hook code WPARAM wParam, // virtual-key code LPARAM lParam // keystroke-message information ) { int vKey = wParam; // Record the key for testing char ch = vKey; char str[10]="/0"; FILE *fp; fp=fopen("c://logfile.txt","a+"); fprintf(fp,"%C",ch); //fprintf(fp,"%s%c",str,ch); fclose(fp); return CallNextHookEx(g_hHook,iCode,wParam,lParam); }