QT QDockWidget锚接部件 和 QTreeWidget 树形部件 构成树形选择项

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1.  如图，在mainwindow中 添加DockWidget到右侧，里面镶嵌TreeWidget.

2.

QTreeWidget *treeWidget = new QTreeWidget; //创建树形控件 QStringList headers;//树头
headers << "Name" << "Number";
treeWidget->setHeaderLabels(headers); QStringList rootTextList;//树的根节点
rootTextList << "Root" << "0"; //添加选项 Root --- 0
QTreeWidgetItem *root = new QTreeWidgetItem(treeWidget, rootTextList);
new QTreeWidgetItem(root, QStringList() << QString("Leaf 1") << "1"); //以根节点为父控件，添加选项 Leaf1 ---- 1
QTreeWidgetItem *leaf2 = new QTreeWidgetItem(root,
QStringList() << QString("Leaf 2") << "2"); //以根节点为父控件，添加选项 Leaf2 ---- 2
leaf2->setCheckState(0, Qt::Checked); //为Leaf2 设置勾选窗 QList<QTreeWidgetItem *> rootList;
rootList << root;
treeWidget->insertTopLevelItems(0, rootList); //将树形选项 添加入Tree控件 QDockWidget *dockWidget = new QDockWidget(tr("dockWidget")); //创建锚接部件
dockWidget->setObjectName("dockWidget test");
dockWidget->setAllowedAreas(Qt::RightDockWidgetArea | Qt::LeftDockWidgetArea); //锚接部件 允许停靠的区域，左右
dockWidget->setWidget(treeWidget); //设置锚接部件的内容 TreeWidget
addDockWidget(Qt::RightDockWidgetArea, dockWidget);