使用QChart以及布局管理器实现左边是折线图右边是饼状图，使用C++-QT开发中文网

下面是一个简单的示例程序，实现了左边是折线图，右边是饼状图的布局：

#include <QtWidgets>

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

    QWidget *widget = new QWidget;
    QHBoxLayout *layout = new QHBoxLayout(widget);

    // 创建折线图
    QChartView *lineChartView = new QChartView;
    QLineSeries *lineSeries = new QLineSeries;
    lineSeries->append(0, 3);
    lineSeries->append(1, 2);
    lineSeries->append(2, 4);
    lineSeries->append(3, 5);
    lineSeries->append(4, 1);
    QChart *lineChart = new QChart;
    lineChart->addSeries(lineSeries);
    lineChart->createDefaultAxes();
    lineChart->setTitle("Line Chart");
    lineChartView->setChart(lineChart);

    // 创建饼状图
    QChartView *pieChartView = new QChartView;
    QPieSeries *pieSeries = new QPieSeries;
    pieSeries->append("A", 10);
    pieSeries->append("B", 20);
    pieSeries->append("C", 30);
    pieSeries->append("D", 40);
    QChart *pieChart = new QChart;
    pieChart->addSeries(pieSeries);
    pieChart->setTitle("Pie Chart");
    pieChartView->setChart(pieChart);

    // 将折线图和饼状图添加到布局中
    layout->addWidget(lineChartView);
    layout->addWidget(pieChartView);

    widget->show();

    return app.exec();
}

运行程序，可以看到左边是折线图，右边是饼状图的布局效果。你可以根据自己的需要修改代码，实现更复杂的布局和图表。