VC++实现注册表监控

[cpp] 
//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(); 
 
} 

补充：软件开发 , Vc ,