使用QChart写一个QT动态温度曲线

下面是一个简单的示例代码，使用QChart和QChartView绘制动态温度曲线：

#include <QtWidgets/QApplication>
#include <QtWidgets/QMainWindow>
#include <QtCharts/QChartView>
#include <QtCharts/QLineSeries>
#include <QtCore/QRandomGenerator>

QT_CHARTS_USE_NAMESPACE

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

    QMainWindow window;
    QChartView *chartView = new QChartView(&window);
    window.setCentralWidget(chartView);

    QChart *chart = new QChart();
    chart->setTitle("Temperature Curve");

    QLineSeries *series = new QLineSeries();
    chart->addSeries(series);

    chart->createDefaultAxes();
    chart->axisX()->setTitleText("Time");
    chart->axisY()->setTitleText("Temperature");

    chartView->setChart(chart);

    window.show();

    QRandomGenerator gen;
    qreal x = 0;
    qreal y = gen.bounded(0, 100);

    while (true) {
        series->append(x, y);
        x += 1;
        y = gen.bounded(0, 100);
        chart->axisX()->setRange(x, 10, Qt::AlignRight);
        chartView->update();
        QApplication::processEvents();
        QThread::msleep(50);
    }

    return a.exec();
}

这个示例代码会打开一个窗口，绘制一个名为“Temperature Curve”的图表，随着时间的推移，将动态添加温度数据点。