QChartView绘制饼状图

效果图：

#include "mainwindow.h"
#include "form.h"
#include <QApplication>
#include <QtCharts>
#include <QPieSeries>
#include <QVector>

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

    QVector<int> vector_monitNumber;
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();
    vector_monitNumber.append();

    int sum = ;
    for(int i=;i<vector_monitNumber.size();i++)
    {
        sum += vector_monitNumber.at(i);
    }

    int float_month1 = vector_monitNumber.at()*/sum;
    QPieSlice *slice1 = new QPieSlice(QString(""), float_month1);
    //slice1->setLabelVisible(true);
    slice1->setLabel(QString("1月份%1").arg(vector_monitNumber.at()));
    //slice1->setLabelColor(Qt::yellow);
    slice1->setLabelVisible();
    //slice1->setLabelColor(Qt::white);
    slice1->setLabelPosition(QPieSlice::LabelOutside);

    //slice1->setLabelPosition(QPieSlice::LabelInsideTangential);
    slice1->setBrush(QColor(,,));

    QPieSlice *slice2 = new QPieSlice(QString(""), );
    slice2->setLabelVisible(true);
    slice2->setLabel(QString("2月份%1").arg(vector_monitNumber.at()));
    //slice2->setLabelColor(Qt::red);
    //slice2->setLabelPosition(QPieSlice::LabelInsideTangential);
    slice2->setBrush(QColor(,,));

    QPieSlice *slice3 = new QPieSlice(QString(""), );
    slice3->setLabelVisible(true);
//    slice3->setLabelColor(Qt::blue);
    slice3->setLabel(QString("3月份%1").arg(vector_monitNumber.at()));
    slice3->setLabelPosition(QPieSlice::LabelOutside);
    slice3->setBrush(QColor(,,));

    QPieSlice *slice4 = new QPieSlice(QString(""), );
    slice4->setLabelVisible(true);
//    slice3->setLabelColor(Qt::blue);
    slice4->setLabel(QString("4月份%1").arg(vector_monitNumber.at()));
    slice4->setLabelPosition(QPieSlice::LabelOutside);
    slice4->setBrush(QColor(,,));

    QPieSlice *slice5 = new QPieSlice(QString(""), );
    slice5->setLabelVisible(true);
//    slice3->setLabelColor(Qt::blue);
    slice5->setLabel(QString("5月份%1").arg(vector_monitNumber.at()));
    slice5->setLabelPosition(QPieSlice::LabelOutside);
    slice5->setBrush(QColor(,,));

    QPieSlice *slice6 = new QPieSlice(QString(""), );
    slice6->setLabelVisible(true);
//    slice3->setLabelColor(Qt::blue);
    slice6->setLabel(QString("6月份%1").arg(vector_monitNumber.at()));
    slice6->setLabelPosition(QPieSlice::LabelOutside);
    slice6->setBrush(QColor(,,));

    QPieSlice *slice7 = new QPieSlice(QString(""), );
    slice7->setLabelVisible(true);
    slice7->setLabel(QString("7月份%1").arg(vector_monitNumber.at()));
    slice7->setLabelPosition(QPieSlice::LabelOutside);
    slice7->setBrush(QColor(,,));

    QPieSlice *slice8 = new QPieSlice(QString(""), );
    slice8->setLabelVisible(true);
    slice8->setLabel(QString("8月份%1").arg(vector_monitNumber.at()));
    slice8->setLabelPosition(QPieSlice::LabelOutside);
    slice8->setBrush(QColor(,,));

    QPieSlice *slice9 = new QPieSlice(QString(""), );
    slice9->setLabelVisible(true);
    slice9->setLabel(QString("9月份%1").arg(vector_monitNumber.at()));
    slice9->setLabelPosition(QPieSlice::LabelOutside);
    slice9->setBrush(QColor(,,));

    QPieSlice *slice10 = new QPieSlice(QString(""), );
    slice10->setLabelVisible(true);
    slice10->setLabel(QString("10月份%1").arg(vector_monitNumber.at()));
    slice10->setLabelPosition(QPieSlice::LabelOutside);
    slice10->setBrush(QColor(,,));

    QPieSlice *slice11 = new QPieSlice(QString(""), );
    slice11->setLabelVisible(true);
    slice11->setLabel(QString("11月份%1").arg(vector_monitNumber.at()));
    slice11->setLabelPosition(QPieSlice::LabelOutside);
    slice11->setBrush(QColor(,,));

    QPieSlice *slice12 = new QPieSlice(QString(""), );
    slice12->setLabelVisible(true);
    slice12->setLabel(QString("12月份%1").arg(vector_monitNumber.at()));
    slice12->setLabelPosition(QPieSlice::LabelOutside);
    slice12->setBrush(QColor(,,));

    QPieSeries *series = new QPieSeries();

    //饼图中间空心的大小
    series->setHoleSize(0.35);
//    series->append("Protein 4.2%", 4.2);
//    series->append("Carbs 56.4%", 56.4);
//    series->append("Other 23.8%", 23.8);

    series->append(slice1);
    series->append(slice2);
    series->append(slice3);
    series->append(slice4);
    series->append(slice5);
    series->append(slice6);
    series->append(slice7);
    series->append(slice8);
    series->append(slice9);
    series->append(slice10);
    series->append(slice11);
    series->append(slice12);

    QChartView *chartView = new QChartView();
    chartView->setRenderHint(QPainter::Antialiasing);
    //chartView->chart()->setTitle("DonutChart Example");
    chartView->chart()->addSeries(series);
    chartView->chart()->legend()->setAlignment(Qt::AlignRight);
    //chartView->chart()->setTheme(QChart::ChartThemeBlueCerulean);
    //chartView->chart()->legend()->setFont(QFont("Arial",7));
    //chartView->chart()->legend()->setVisible(false);

    MainWindow w;
    w.resize(, );
    w.setCentralWidget(chartView);
    w.show();

    return a.exec();
}