QT使用QtCharts创建图表

QT使用QtCharts创建图表 

工程pro文件需要添加

QT += charts

注意需要引用

#include <QtCharts>
QT_CHARTS_USE_NAMESPACE

动手实践代码

QBarSet *set0 = new QBarSet("座席状态");
    set0->append(6);
    set0->append(3);
    set0->append(2);
    set0->append(1);
    set0->append(1);
    set0->append(1);
    set0->append(1);

    //set0->setColor(Qt::magenta); //设置柱子颜色  同一个QBarSet这里测试不能为每根柱子单独设置颜色或随机生成颜色

    QBarSeries *series = new QBarSeries();
    series->append(set0);

    series->setLabelsVisible(true);//柱子标签数字显示否
    series->setLabelsPosition(QAbstractBarSeries::LabelsInsideBase);//柱子标签数字显示位置
    //LabelsCenter = 0,        LabelsInsideEnd,        LabelsInsideBase,        LabelsOutsideEnd

    QChart *chart = new QChart();
    chart->addSeries(series);
    chart->setTitle("呼叫中心");
    chart->setAnimationOptions(QChart::SeriesAnimations);

    QStringList categories;
    categories.append("就绪");
    categories.append("示忙");
    categories.append("排队");
    categories.append("振铃");
    categories.append("通话");
    categories.append("外拨");


    QBarCategoryAxis *axis = new QBarCategoryAxis();
    QFont Font1("Microsoft YaHei", 30, 254);
    axis->setLabelsFont(Font1);
    //axis->setLabelsColor(Qt::red);

    axis->append(categories);
    chart->createDefaultAxes();
    chart->setAxisX(axis, series);

     //chart->legend()->setVisible(false);
     chart->legend()->setAlignment(Qt::AlignBottom);
     //  chart->legend()->setAlignment(Qt::AlignRight);
     chart->legend()->setColor(QColor(222,233,251));//设置颜色

     QChartView *chartView = new QChartView(chart);
     chartView->setRenderHint(QPainter::Antialiasing);


      auto lb=new QLabel(tr("图表测试"));
      lb->setAlignment(Qt::AlignCenter);

      QFont Font("Microsoft YaHei", 30, 254);//字休大小颜色
      lb->setFont(Font);
      auto h2=new QHBoxLayout;
      h2->addWidget(lb);

      auto layoutMain=new QVBoxLayout;
      layoutMain->addLayout(h2);       
      layoutMain->addWidget(chartView);

     this->setLayout(layoutMain);
     this->setWindowTitle("图表测试QChartView");
     this->resize(800,600);

窗体整体缩小柱子下方的文本不显示了