QMap遍历

  foreach (NodeFrame *node, App::NodeList)
    {

        QMapIterator<QString,QString> it(node->qItemData_map);
        while(it.hasNext())
        {
            it.next();  ///放在前面
            node->qValueMap.value(it.key())->setText(it.value());
            if(it.value().toFloat() > App::Up_limit_itemcode_map.value(it.key()).toFloat())
            {
               node->qStatusMap.value(it.key())->setStyleSheet("background-color:red");
            }
            else if(it.value().toFloat() < App::Down_limit_itemcode_map.value(it.key()).toFloat())
            {
                node->qStatusMap.value(it.key())->setStyleSheet("background-color:yellow");
            }else{
                node->qStatusMap.value(it.key())->setStyleSheet("background-color:green");
            }

        }

    }