main.cpp 范例文件

areachart/main.cpp
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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(); }