#include <QMenu> #include <QClipboard> QListWidget* myListWidget = new QListWidget; // 填充数据 for(int i = 0; i < 5; i++) { myListWidget->addItem(new QListWidgetItem(QString::number(i))); } // 默认是strongfocus，聚焦状态下该元素看起来是空白的 myListWidget->setFocusPolicy(Qt::FocusPolicy::NoFocus); // 设置右键菜单 myListWidget->setContextMenuPolicy(Qt::CustomContextMenu); QObject::connect(myListWidget, &QListWidget::customContextMenuRequested, [&]() { QMenu menu; // 复制动作 QAction* copyAction = menu.addAction("Copy"); // 处理 QObject::connect(copyAction, &QAction::triggered, [&]() { QClipboard *clipboard = QApplication::clipboard(); clipboard->setText(myListWidget->currentItem()->text()); }); // 可以添加其他菜单 menu.exec(QCursor::pos()); }); // 设置分隔线 myListWidget->setStyleSheet("QListWidget::item { border-bottom: 1px solid black; }"); myListWidget->setWordWrap(true); myListWidget->show();