try
    {
        const wchar_t*  Query=(const wchar_t *)this->TriggerRequest.utf16();
        dhCheck( dhGetObject(L"winmgmts:{impersonationLevel=impersonate,(Security)}!\\\\.\\root\\cimv2",NULL, &wmiSvc) );
        dhCheck( dhGetValue(L"%o", &wmiEventSrc, wmiSvc, L".ExecNotificationQuery(%S)",Query) );
        emit this->TriggerState(this->TriggerName,1);
        while (TRUE)
        {
            CDispPtr wmiLatestEvent;
            dhCheck( dhGetValue(L"%o", &wmiLatestEvent, wmiEventSrc, L".NextEvent") );
            emit this->Triggered(this->TriggerName,this->GenerateTriggerMsg(wmiLatestEvent),this->TriggerIcon);
            wmiLatestEvent.Dispose();
        }
    }
    catch (string errstr)
    {
        ErrorMSG=this->GenerateErrorMSG(QString::fromStdString(errstr));
        emit this->TriggerState(this->TriggerName,-1);
    }

dhCheck( dhGetObject(L"winmgmts:{impersonationLevel=impersonate,(Security)}!\\\\.\\root\\cimv2",NULL, &wmiSvc) );