Qt 5.9 | Qt Charts | AreaChart Example | main.cpp Example File

Qt 5.9.9 Reference Documentation

# main.cpp Example File

areachart/main.cpp

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      ** 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();
      }