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);