编辑时修改QTableWidgetItem快捷菜单

#include <QtWidgets>

class TableWidget : public QTableWidget
{
public:
    TableWidget(QWidget *parent = nullptr) : QTableWidget(parent)
    {
        // 添加行和列
        setRowCount(3);
        setColumnCount(3);

        // 创建QTableWidgetItem并添加到单元格
        QTableWidgetItem *item = new QTableWidgetItem("Item");
        setItem(1, 1, item);

        // 设置上下文菜单策略
        setContextMenuPolicy(Qt::CustomContextMenu);

        // 连接自定义上下文菜单信号
        connect(this, &TableWidget::customContextMenuRequested, this, &TableWidget::showContextMenu);
    }

private slots:
    void showContextMenu(const QPoint &pos)
    {
        // 获取选中的单元格
        QTableWidgetItem *selectedItem = itemAt(pos);

        if (selectedItem)
        {
            // 创建菜单
            QMenu menu(this);

            // 添加操作
            QAction *action1 = new QAction("Action 1", this);
            connect(action1, &QAction::triggered, this, &TableWidget::handleAction1);
            menu.addAction(action1);

            QAction *action2 = new QAction("Action 2", this);
            connect(action2, &QAction::triggered, this, &TableWidget::handleAction2);
            menu.addAction(action2);

            // 显示菜单
            menu.exec(mapToGlobal(pos));
        }
    }

    void handleAction1()
    {
        // 执行操作1
        QTableWidgetItem *selectedItem = currentItem();
        // ...
    }

    void handleAction2()
    {
        // 执行操作2
        QTableWidgetItem *selectedItem = currentItem();
        // ...
    }
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    TableWidget tableWidget;
    tableWidget.show();

    return app.exec();
}