便捷部件类

    QListWidget listWidget;

    //添加项目
    new QListWidgetItem("**",&listWidget);

    QListWidgetItem *listWidgetItem = new QListWidgetItem;
    listWidgetItem->setText("**");

    QPixmap pixmap(50,50);
    pixmap.fill(Qt::blue);
    listWidgetItem->setIcon(QIcon(pixmap));
    listWidgetItem->setToolTip("*****");

    //将部件插入项目
    listWidget.insertItem(1,listWidgetItem);
    //将部件设置为降序排序
    listWidget.sortItems(Qt::DescendingOrder);

    listWidget.show();

    QTreeWidget treeWidget;
    //设置列数
    treeWidget.setColumnCount(2);

    QStringList headers;
    headers<<"*****"<<"*****";

    //设置头
    treeWidget.setHeaderLabels(headers);

    //添加项目
    QTreeWidgetItem *item1 = new QTreeWidgetItem(&treeWidget);
    item1->setText(0,"*****");
    QTreeWidgetItem *item2 = new QTreeWidgetItem(item1);
    item2->setText(0,"*****");
    item2->setText(1,"*****");

    //添加项目
    QTreeWidgetItem *item3 = new QTreeWidgetItem(&treeWidget,item1);
    item3->setText(0,"***");

    treeWidget.show();

    //创建表格部件
    QTableWidget tableWidget(3,2);
    QTableWidgetItem *tablewidgetItem = new QTableWidgetItem("com");
    tableWidget.setItem(1,1,tablewidgetItem);

    //创建表格项目，作为表头
    QTableWidgetItem* headerV = new QTableWidgetItem("cat");
    tableWidget.setVerticalHeaderItem(0,headerV);
    QTableWidgetItem *headerH = new QTableWidgetItem("what");
    tableWidget.setHorizontalHeaderItem(0,headerH);
    tableWidget.show();