如何通过单击列的标题来按列排序QTableWidget？

// 创建QTableWidget对象
QTableWidget *tableWidget = new QTableWidget(this);
// 设置表格行列数
tableWidget->setRowCount(4);
tableWidget->setColumnCount(3);
// 设置表头内容
tableWidget->setHorizontalHeaderLabels(QStringList() << "姓名" << "年龄" << "性别");

// 设置表格数据
tableWidget->setItem(0, 0, new QTableWidgetItem("张三"));
tableWidget->setItem(0, 1, new QTableWidgetItem("25"));
tableWidget->setItem(0, 2, new QTableWidgetItem("男"));
tableWidget->setItem(1, 0, new QTableWidgetItem("李四"));
tableWidget->setItem(1, 1, new QTableWidgetItem("30"));
tableWidget->setItem(1, 2, new QTableWidgetItem("男"));
tableWidget->setItem(2, 0, new QTableWidgetItem("王五"));
tableWidget->setItem(2, 1, new QTableWidgetItem("28"));
tableWidget->setItem(2, 2, new QTableWidgetItem("女"));
tableWidget->setItem(3, 0, new QTableWidgetItem("赵六"));
tableWidget->setItem(3, 1, new QTableWidgetItem("27"));
tableWidget->setItem(3, 2, new QTableWidgetItem("男"));

// 获取水平表头对象
QHeaderView *header = tableWidget->horizontalHeader();
// 连接clicked信号与自定义的槽函数
connect(header, SIGNAL(sectionClicked(int)), this, SLOT(sortTableByColumn(int)));

// 排序槽函数
void sortTableByColumn(int column)
{
    // 按照指定列索引进行排序
    tableWidget->sortItems(column);
}