//定时更新状态栏上的时间

 void MGameScene::update(float dt)

 {

     static float fpassedTime = ;

     fpassedTime += dt;

     if (fpassedTime < MDZ_Seconds) return;

     fpassedTime = ;

     //设置状态栏时间

     setStatusTime();

 }

 //设置状态栏上的时间

 void MGameScene::setStatusTime()

 {

     time_t    timeStamp = time(nullptr);

     auto nowDate = localtime(&timeStamp);

     string strTime;

     char timeHour[]{};

     strftime(timeHour, sizeof(timeHour), "%H:", nowDate);

     strTime.append(timeHour);

     char timeMinute[]{};

     strftime(timeMinute, sizeof(timeMinute), "%M", nowDate);

     strTime.append(timeMinute);

     //时间显示标签

     m_pTxtTime->setString(strTime);

 }