#include <QApplication>
#include <QTableWidget>
#include <QMenu>
#include <QContextMenuEvent>
#include <QMessageBox>
#include <QHBoxLayout>
#include <QWidget>

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

    // 创建主窗口
    QWidget window;
    QHBoxLayout *layout = new QHBoxLayout(&window);

    // 创建 QTableWidget
    QTableWidget *tableWidget = new QTableWidget(5, 3);
    tableWidget->setHorizontalHeaderLabels({"Column 1", "Column 2", "Column 3"});

    // 填充一些数据
    for (int row = 0; row < 5; ++row) {
        for (int col = 0; col < 3; ++col) {
            QTableWidgetItem *item = new QTableWidgetItem(tr("Item %1-%2").arg(row).arg(col));
            tableWidget->setItem(row, col, item);
        }
    }

    // 将 QTableWidget 添加到布局中
    layout->addWidget(tableWidget);
    window.setLayout(layout);

    // 安装事件过滤器
    tableWidget->viewport()->installEventFilter(&window);

    // 事件过滤器实现
    window.installEventFilter(tableWidget);
    QObject::connect(tableWidget, &QTableWidget::customContextMenuRequested, [tableWidget](const QPoint &pos) {
        QTableWidgetItem *item = tableWidget->itemAt(pos);
        if (item) {
            int row = item->row();

            // 创建右键菜单
            QMenu menu;
            QAction *showRowAction = menu.addAction(tr("Show Row Number"));
            QObject::connect(showRowAction, &QAction::triggered, [row]() {
                QMessageBox::information(nullptr, tr("Row Number"), tr("You clicked on row: %1").arg(row));
            });

            // 显示菜单
            menu.exec(tableWidget->viewport()->mapToGlobal(pos));
        }
    });

    // 启用右键菜单
    tableWidget->setContextMenuPolicy(Qt::CustomContextMenu);

    window.show();
    return app.exec();
}