QT QDockWidget錨接部件 和 QTreeWidget 樹形部件 構成樹形選擇項

1.  如圖，在mainwindow中 添加DockWidget到右側，裏面鑲嵌TreeWidget.

 

2.

QTreeWidget *treeWidget = new QTreeWidget;  //創建樹形控件

QStringList headers;        //樹頭
headers << "Name" << "Number";
treeWidget->setHeaderLabels(headers);

QStringList rootTextList;   //樹的根節點
rootTextList << "Root" << "0";    //添加選項 Root --- 0
QTreeWidgetItem *root = new QTreeWidgetItem(treeWidget, rootTextList);
new QTreeWidgetItem(root, QStringList() << QString("Leaf 1") << "1");   //以根節點爲父控件，添加選項 Leaf1 ---- 1
QTreeWidgetItem *leaf2 = new QTreeWidgetItem(root,
                QStringList() << QString("Leaf 2") << "2"); //以根節點爲父控件，添加選項 Leaf2 ---- 2
leaf2->setCheckState(0, Qt::Checked);  //爲Leaf2 設置勾選窗

QList<QTreeWidgetItem *> rootList;
rootList << root;
treeWidget->insertTopLevelItems(0, rootList);  //將樹形選項 添加入Tree控件

QDockWidget *dockWidget = new QDockWidget(tr("dockWidget"));   //創建錨接部件
dockWidget->setObjectName("dockWidget test");
dockWidget->setAllowedAreas(Qt::RightDockWidgetArea | Qt::LeftDockWidgetArea);  //錨接部件 允許停靠的區域，左右
dockWidget->setWidget(treeWidget);  //設置錨接部件的內容 TreeWidget
addDockWidget(Qt::RightDockWidgetArea, dockWidget);