? 右鍵菜單實現：通過重寫contextMenuEvent(QContextMenuEvent *event)事件，QMenu+QAction即可完美實現！

實現方式：createActions用于創建菜單、菜單項，contextMenuEvent用于實現菜單的顯示，translateLanguage用于實現菜單的文本（此方法主要設置多語化使用）

void ImageTree::createActions() {//創建菜單、菜單項pop_menu = new QMenu();add_images_action = new QAction(this);?add_folder_action = new QAction(this);remove_selected_action = new QAction(this);remove_all_action = new QAction(this);//連接信號與槽connect(add_images_action, &QAction::triggered, this, &ImageTree::selectImages);connect(add_folder_action, &QAction::triggered, this, &ImageTree::selectFolder);connect(remove_selected_action, &QAction::triggered, this, &ImageTree::removeSelectedImages);connect(remove_all_action, &QAction::triggered, this, &ImageTree::removeAllImages); }void ImageTree::contextMenuEvent(QContextMenuEvent *event) {//清除原有菜單pop_menu->clear();pop_menu->addAction(add_images_action);pop_menu->addAction(add_folder_action);pop_menu->addAction(remove_selected_action);pop_menu->addAction(remove_all_action);//菜單出現的位置為當前鼠標的位置pop_menu->exec(QCursor::pos());event->accept(); }void ImageTree::translateLanguage() {add_images_action->setText(tr("add images"));add_folder_action->setText(tr("add folder"));remove_selected_action->setText(tr("remove selected images"));remove_all_action->setText(tr("remove all images")); }

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