VC++ 重启服务，停止服务，启动服务

下面是一段用VC++ 控制windows服务的代码  w3svc 是www服务的操作码。。

void CXXXDlg::ServiceRun()   
{   
 SERVICE_STATUS ssStatus;   
 //获得ServiceControl Manager的句柄   
 SC_HANDLE shServiceManager=OpenSCManager(NULL,SERVICES_ACTIVE_DATABASE,SC_MANAGER_ALL_ACCESS);   
 //然后获得用户希望检查的服务的句柄   
 SC_HANDLE shDefineService=OpenService(shServiceManager,"W3SVC",SERVICE_ALL_ACCESS);   
    
 if((QueryServiceStatus(shDefineService,&ssStatus))==0)   
  AfxMessageBox("无法确定服务状态",MB_ICONINFORMATION);   
 //下面的代码用于检查服务是否被停止,如果停止则打开此服务   
 SC_HANDLE stService;   
 if(ssStatus.dwCurrentState==SERVICE_STOPPED)   
 {   
  //AfxMessageBox("启动IIS",MB_ICONINFORMATION);   
  stService=OpenService(shServiceManager,"W3SVC",SERVICE_START|GENERIC_EXECUTE);   
  StartService(stService,0,NULL);   
  CloseServiceHandle(stService);   
 }   
 else  
 {   
  //AfxMessageBox("停止IIS",MB_ICONINFORMATION);   
  stService=OpenService(shServiceManager,"W3SVC",SERVICE_STOP|GENERIC_EXECUTE);   
  ControlService(stService,SERVICE_CONTROL_STOP,&ssStatus);   
  CloseServiceHandle(stService);   
 }   
 CloseServiceHandle(shDefineService);   
 CloseServiceHandle(shServiceManager);   
}