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3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt Charts module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL$
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29
30#include <QtWidgets/QApplication>
31#include <QtWidgets/QMainWindow>
32#include <QtCharts/QChartView>
33#include <QtCharts/QPieSeries>
34#include <QtCharts/QPieSlice>
35#include <QtCore/QDebug>
36QT_CHARTS_USE_NAMESPACE
37
38int main(int argc, char *argv[])
39{
40 QApplication a(argc, argv);
41
42//![1]
43 QPieSeries *series = new QPieSeries();
44 series->setHoleSize(0.35);
45 series->append(label: "Protein 4.2%", value: 4.2);
46 QPieSlice *slice = series->append(label: "Fat 15.6%", value: 15.6);
47 slice->setExploded();
48 slice->setLabelVisible();
49 series->append(label: "Other 23.8%", value: 23.8);
50 series->append(label: "Carbs 56.4%", value: 56.4);
51//![1]
52
53//![2]
54 QChartView *chartView = new QChartView();
55 chartView->setRenderHint(hint: QPainter::Antialiasing);
56 chartView->chart()->setTitle("Donut with a lemon glaze (100g)");
57 chartView->chart()->addSeries(series);
58 chartView->chart()->legend()->setAlignment(Qt::AlignBottom);
59 chartView->chart()->setTheme(QChart::ChartThemeBlueCerulean);
60 chartView->chart()->legend()->setFont(QFont("Arial", 7));
61//![2]
62
63//![3]
64 QMainWindow window;
65 window.setCentralWidget(chartView);
66 window.resize(w: 400, h: 300);
67 window.show();
68//![3]
69
70 return a.exec();
71}
72

source code of qtcharts/examples/charts/donutchart/main.cpp