main.cpp Example File

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  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
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  ** This file is part of the Qt Charts module of the Qt Toolkit.
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  #include <QtWidgets/QApplication>
  #include <QtWidgets/QMainWindow>
  #include <QtCharts/QChartView>
  #include <QtCharts/QLineSeries>
  #include <QtCharts/QAreaSeries>

  QT_CHARTS_USE_NAMESPACE

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

      QLineSeries *series0 = new QLineSeries();
      QLineSeries *series1 = new QLineSeries();

      *series0 << QPointF(1, 5) << QPointF(3, 7) << QPointF(7, 6) << QPointF(9, 7) << QPointF(12, 6)
               << QPointF(16, 7) << QPointF(18, 5);
      *series1 << QPointF(1, 3) << QPointF(3, 4) << QPointF(7, 3) << QPointF(8, 2) << QPointF(12, 3)
               << QPointF(16, 4) << QPointF(18, 3);

      QAreaSeries *series = new QAreaSeries(series0, series1);
      series->setName("Batman");
      QPen pen(0x059605);
      pen.setWidth(3);
      series->setPen(pen);

      QLinearGradient gradient(QPointF(0, 0), QPointF(0, 1));
      gradient.setColorAt(0.0, 0x3cc63c);
      gradient.setColorAt(1.0, 0x26f626);
      gradient.setCoordinateMode(QGradient::ObjectBoundingMode);
      series->setBrush(gradient);

      QChart *chart = new QChart();
      chart->addSeries(series);
      chart->setTitle("Simple areachart example");
      chart->createDefaultAxes();
      chart->axisX()->setRange(0, 20);
      chart->axisY()->setRange(0, 10);

      QChartView *chartView = new QChartView(chart);
      chartView->setRenderHint(QPainter::Antialiasing);

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

      return a.exec();
  }