Qt-chart 画柱状图

记录下，记录下

效果图

直接上代码

	// 创建柱状系列  
	QBarSeries *series = new QBarSeries();
	// 创建数据集  
	QBarSet *setTar = new QBarSet(("tar"));
	QBarSet *setReality = new QBarSet(("reality"));

	//添加柱状数据
	*setTar << 1<<3;
	*setReality << 2 << 4;

	//设置柱状图颜色
	setTar->setColor(QColor("green"));
	setReality->setColor(QColor("yellow"));

	//设置柱状图标签颜色
	setTar->setLabelColor(QColor("black"));
	setReality->setLabelColor(QColor("black"));

	series->append(setTar);
	series->append(setReality);

	//设置显示柱状图标签
	series->setLabelsVisible(true);
	//设置标签显示在内部顶端
	series->setLabelsPosition(QAbstractBarSeries::LabelsInsideEnd);

	// 创建图表对象  
	QChart *chart = new QChart();
	chart->addSeries(series);
	chart->setAnimationOptions(QChart::SeriesAnimations);

	//X轴
	QBarCategoryAxis* axisX = new QBarCategoryAxis();
	QStringList categories;
	categories <<"11.23"<<"11.24";
	axisX->append(categories);
	//X轴图例显示在下方
	chart->addAxis(axisX, Qt::AlignBottom);
	series->attachAxis(axisX);

	//Y轴
	QValueAxis *axisY = new QValueAxis();
	axisY->setRange(0, 10);
	//标签颜色
	axisY->setLabelsColor(QColor(Qt::GlobalColor::black));
	//刻度线颜色
	axisY->setGridLineColor(QColor(Qt::GlobalColor::black));
	chart->addAxis(axisY, Qt::AlignLeft);
	series->attachAxis(axisY);

	// 创建图表视图  
	QChartView * chartView = new QChartView(chart);
	chartView->setRenderHint(QPainter::Antialiasing);
	//设置图例为显示状态
	chart->legend()->setVisible(true); 
	//设置图例的显示位置在底部
	chart->legend()->setAlignment(Qt::AlignBottom);
	//去背景
	chart->setBackgroundVisible(false);  

	setCentralWidget(chartView);