main.cpp Example File

donutchart/main.cpp
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 #include <QtWidgets/QApplication>
 #include <QtWidgets/QMainWindow>
 #include <QtCharts/QChartView>
 #include <QtCharts/QPieSeries>
 #include <QtCharts/QPieSlice>
 #include <QtCore/QDebug>
 QT_CHARTS_USE_NAMESPACE

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

     QPieSeries *series = new QPieSeries();
     series->setHoleSize(0.35);
     series->append("Protein 4.2%", 4.2);
     QPieSlice *slice = series->append("Fat 15.6%", 15.6);
     slice->setExploded();
     slice->setLabelVisible();
     series->append("Other 23.8%", 23.8);
     series->append("Carbs 56.4%", 56.4);

     QChartView *chartView = new QChartView();
     chartView->setRenderHint(QPainter::Antialiasing);
     chartView->chart()->setTitle("Donut with a lemon glaze (100g)");
     chartView->chart()->addSeries(series);
     chartView->chart()->legend()->setAlignment(Qt::AlignBottom);
     chartView->chart()->setTheme(QChart::ChartThemeBlueCerulean);
     chartView->chart()->legend()->setFont(QFont("Arial", 7));

     QMainWindow window;
     window.setCentralWidget(chartView);
     window.resize(400, 300);
     window.show();

     return a.exec();
 }