在Qt中如何在同一QChart上绘制不同的图形

QChart *chart = new QChart();

QChartView *chartView = new QChartView(chart);

QLineSeries *lineSeries = new QLineSeries();
// 添加线条数据
lineSeries->append(x1, y1);
lineSeries->append(x2, y2);
// ...

QBarSeries *barSeries = new QBarSeries();
// 添加柱状图数据
QBarSet *barSet = new QBarSet("Bar Set");
*barSet << value1 << value2 << value3;
barSeries->append(barSet);
// ...

QPieSeries *pieSeries = new QPieSeries();
// 添加饼图数据
QPieSlice *slice1 = new QPieSlice("Slice 1", value1);
QPieSlice *slice2 = new QPieSlice("Slice 2", value2);
pieSeries->append(slice1);
pieSeries->append(slice2);
// ...

chart->addSeries(lineSeries);
chart->addSeries(barSeries);
chart->addSeries(pieSeries);

chart->setTitle("Chart Title");

QValueAxis *axisX = new QValueAxis();
// 设置X轴范围、刻度等属性
chart->addAxis(axisX, Qt::AlignBottom);
lineSeries->attachAxis(axisX);
barSeries->attachAxis(axisX);
// ...

QValueAxis *axisY = new QValueAxis();
// 设置Y轴范围、刻度等属性
chart->addAxis(axisY, Qt::AlignLeft);
lineSeries->attachAxis(axisY);
barSeries->attachAxis(axisY);
// ...

chart->legend()->setVisible(true);
chart->legend()->setAlignment(Qt::AlignBottom);

QMainWindow window;
window.setCentralWidget(chartView);
window.show();