一、双击编辑

1、定义连接

    connect(m_treeWidget, &QTreeView::doubleClicked, this, &FileViewPanelCreator::onItemDoubleClicked);
    connect(m_treeWidget->itemDelegate(), &QAbstractItemDelegate::closeEditor, this, &FileViewPanelCreator::onCloseEditor);

2、实现函数

// 槽函数，处理双击事件
void FileViewPanelCreator::onItemDoubleClicked(const QModelIndex &index) {
    if (index.isValid()) {
        QTreeWidgetItem* root = m_treeWidget->topLevelItem(0);
        QTreeWidgetItem* item = root->child(index.row());
        m_treeWidget->openPersistentEditor(item);
    }
}

// 槽函数，处理编辑完成事件
void FileViewPanelCreator::onCloseEditor(QWidget *editor, QAbstractItemDelegate::EndEditHint hint) {
    Q_UNUSED(hint);
// 在此处理编辑完成后的操作
    QModelIndex editedIndex = m_treeWidget->currentIndex();
    QTreeWidgetItem* root = m_treeWidget->topLevelItem(0);
    QTreeWidgetItem* item = root->child(editedIndex.row());
    m_treeWidget->closePersistentEditor(item);
}

二、鼠标右键菜单

1、定义连接

m_treeWidget->setContextMenuPolicy(Qt::CustomContextMenu);//必须添加
connect(m_treeWidget, &QTreeWidget::customContextMenuRequested, this, &FileViewPanelCreator::onTreeWidgetCustomContextMenuRequested);

2、实现函数

void FileViewPanelCreator::onTreeWidgetCustomContextMenuRequested(const QPoint &pos)
{
    QTreeWidgetItem* curItem = m_treeWidget->itemAt(pos);
   if(curItem != nullptr)
    {
        QMenu *popMenu = new QMenu(m_treeWidget);
        QAction *actionNew = new QAction("Attribute",m_treeWidget);

        connect(actionNew, &QAction::triggered, this, &FileViewPanelCreator::ActionNew_Attribute);
        popMenu->addAction(actionNew);
        popMenu->exec(QCursor::pos());
        delete popMenu;
        delete actionNew;
    }
}