The QTabWidget class provides a stack of tabbed widgets. More... 

The QListWidget class provides an item-based list widget. More... 

      QStringList strlist;
      strlist<<"系统"<<"外观"<<"截图"<<"贴图";
      for (int i = 0;i<strlist.size();i++) {
          //ui->listWidget->insertItem(i,strlist.at(i));
          QListWidgetItem *pItem = new QListWidgetItem();
          pItem->setSizeHint(QSize(100,100));
          pItem->setTextAlignment(Qt::AlignCenter);
          pItem->setText(strlist.at(i));
          ui->listWidget->insertItem(i,pItem);
      }

QStackedWidget这类似于一个卡片堆，其中只有最上面的卡片是可见的。 

      QStringList strlist;
      strlist<<"系统"<<"外观"<<"截图"<<"贴图";

      for (int i = 0;i<strlist.size();i++) {
          //ui->listWidget->insertItem(i,strlist.at(i));
          QListWidgetItem *pItem = new QListWidgetItem();
          pItem->setSizeHint(QSize(100,100));
          pItem->setTextAlignment(Qt::AlignCenter);
          pItem->setText(strlist.at(i));
          ui->listWidget->insertItem(i,pItem);
      }

        ui->stackedWidget->setCurrentIndex(0);//设置默认显示页
      //void currentRowChanged(int currentRow);
      connect(ui->listWidget,&QListWidget::currentRowChanged,[=](int index){
                ui->stackedWidget->setCurrentIndex(index);
      });