技術標籤：QTc++qt

//listWidget屬性設定為自定義選單
ui->listWidgetCommon->setContextMenuPolicy(Qt::CustomContextMenu);
connect(ui->listWidgetCommon, &QListWidget::customContextMenuRequested, [=](const QPoint& pos)
{
       QMenu* pMenu = new QMenu(ui->listWidgetCommon);
       QAction* pActionProperties =
 
 new QAction(tr("Modify properties"), pMenu);
       //pActionProperties->setShortcut(QKeySequence("Ctrl+C"));//快捷鍵
       connect(pActionProperties, &QAction::triggered, [=] { 
             onModifyProperties();//點選右鍵選單需要執行的函式
       });
       //只有當item不為空時才新增右鍵選單
       if (ui-
 
>listWidgetCommon->itemAt(mapFromGlobal(QCursor::pos()))!=nullptr)
       { 
               pMenu->addAction(pActionProperties);
               pMenu->popup(ui->listWidgetCommon->mapToGlobal(pos));
       }
});

最終實現效果如下：