main.cpp 范例文件

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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/QBoxPlotSeries>
#include <QtCharts/QBoxSet>
#include <QtCharts/QLegend>
#include <QtCharts/QBarCategoryAxis>
#include <QtCore/QFile>
#include "boxdatareader.h"
QT_CHARTS_USE_NAMESPACE
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QBoxPlotSeries *acmeSeries = new QBoxPlotSeries();
    acmeSeries->setName("Acme Ltd");
    QBoxPlotSeries *boxWhiskSeries = new QBoxPlotSeries();
    boxWhiskSeries->setName("BoxWhisk Inc");
    QFile acmeData(":acme");
    if (!acmeData.open(QIODevice::ReadOnly | QIODevice::Text))
        return 1;
    BoxDataReader dataReader(&acmeData);
    while (!dataReader.atEnd()) {
        QBoxSet *set = dataReader.readBox();
        if (set)
            acmeSeries->append(set);
    }
    QFile boxwhiskData(":boxwhisk");
    if (!boxwhiskData.open(QIODevice::ReadOnly | QIODevice::Text))
        return 1;
    dataReader.readFile(&boxwhiskData);
    while (!dataReader.atEnd()) {
        QBoxSet *set = dataReader.readBox();
        if (set)
            boxWhiskSeries->append(set);
    }
    QChart *chart = new QChart();
    chart->addSeries(acmeSeries);
    chart->addSeries(boxWhiskSeries);
    chart->setTitle("Acme Ltd and BoxWhisk Inc share deviation in 2012");
    chart->setAnimationOptions(QChart::SeriesAnimations);
    chart->createDefaultAxes();
    chart->axisY()->setMin(15.0);
    chart->axisY()->setMax(34.0);
    chart->legend()->setVisible(true);
    chart->legend()->setAlignment(Qt::AlignBottom);
    QChartView *chartView = new QChartView(chart);
    chartView->setRenderHint(QPainter::Antialiasing);
    QMainWindow window;
    window.setCentralWidget(chartView);
    window.resize(800, 600);
    window.show();
    return a.exec();
}