QChart柱状图

//柱状图
  // 创建柱状图数据
  QBarSet *set0 = new QBarSet("");
  *set0 << 1601 << 974 << 655 << 362;
  QBarSeries *series = new QBarSeries();
  series->append(set0);
  set0->setColor(QColor("#F5834B"));
  // 创建柱状图
  QChart *chart_center_Bar = new QChart();
  chart_center_Bar->addSeries(series);
  chart_center_Bar->setTitle("");
  chart_center_Bar->setAnimationOptions(QChart::SeriesAnimations);
  chart_center_Bar->setBackgroundVisible(false);
  // 设置柱子宽度
  series->setBarWidth(0.2); // 设置柱子宽度为0.5
  // 创建X轴和Y轴
  QStringList categories;
  categories << u8"A" << u8"B" << u8"C" << u8"D" ;
  QBarCategoryAxis *axisX = new QBarCategoryAxis();
  axisX->append(categories);
  axisX->setLabelsFont(QFont("Arial", 6));
  axisX->setLabelsColor(Qt::white);
  axisX->setGridLineVisible(false);
  chart_center_Bar->addAxis(axisX, Qt::AlignBottom);
  series->attachAxis(axisX);
  QValueAxis *axisY = new QValueAxis();
  axisY->setGridLineVisible(false);
  axisY->setLabelsColor(Qt::white);
  chart_center_Bar->addAxis(axisY, Qt::AlignLeft);
  series->attachAxis(axisY);
  //图例
  chart_center_Bar->legend()->setAlignment(Qt::AlignBottom);
  chart_center_Bar->legend()->setVisible(false);;
  // 创建柱状图视图
  QChartView *chart_center_BarView = new QChartView(chart_center_Bar);
  chart_center_BarView->setRenderHint(QPainter::Antialiasing);
  chart_center_BarView->setStyleSheet("background-color: transparent;");
  //加入布局
  QVBoxLayout* layout_centers_Bar = new QVBoxLayout;
  layout_centers_Bar->setContentsMargins(0, 0, 0, 0);
  layout_centers_Bar->addWidget(chart_center_BarView);
  ui->widget_centers_Bar->setLayout(layout_centers_Bar);
  ui->widget_centers_Bar->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);