VC++实现注册表监控

//监视HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run项#include <windows.h>//定义一个监视注册表启动项的函数int reg(){   HANDLE hNotify;   HKEY hKeyx;   //DWORD dwRes;   hNotify = CreateEvent(NULL, //不使用SECURITY_ATTRIBUTES结构         FALSE, //不自动重置         TRUE,   //设置初始状态         "RegistryNotify" //事件对象的名称         );   if (hNotify == 0)   {     MessageBox(NULL,"CreateEvent failed"," ",MB_OK);     ExitProcess(0);   }   if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, //根键         "Software\\Microsoft\\Windows\\CurrentVersion\\Run", //子键         0, //reserved         KEY_NOTIFY, //监视用         &hKeyx //保存句柄         ) != ERROR_SUCCESS)   {     CloseHandle(hNotify);     MessageBox(NULL,"RegOpenKeyEx failed"," ",MB_OK);     ExitProcess(0);   }   if (RegNotifyChangeKeyValue(hKeyx, //监视子键句柄         TRUE, //监视此项的子键         REG_NOTIFY_CHANGE_NAME | REG_NOTIFY_CHANGE_LAST_SET, //监视增加或删除了子键，监视键值发生是否改变         hNotify, //接受注册表变化事件的事件对象句柄         TRUE //注册表变化前报告         ) != ERROR_SUCCESS)   {     CloseHandle(hNotify);     RegCloseKey(hKeyx);     MessageBox(NULL,"RegNotifyChangeKeyValue failed"," ", MB_OK);     ExitProcess(0);   }   if (WaitForSingleObject(hNotify, INFINITE) != WAIT_FAILED)   {     MessageBox(NULL,"注册表有改动"," ",MB_OK);   }   CloseHandle(hNotify);   RegCloseKey(hKeyx);   return 0;}void main(){ // DWORD ID; // CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)reg, NULL, 0, &ID);   //创建线程 // printf("ok\n");reg();}