目录 1.简单折线 //![1] //! 折现段坐标 QLineSeries *series = new QLineSeries(); //![1] //![2] //! 添加点 series->append(0, 6); series->append(2, 4); series->append(3, 8); series->append(7, 4); series->append(10, 5); *series << QPointF(11, 1) << QPointF(13, 3) << QPointF(17, 6) << QPointF(18, 3) << QPointF(20, 2); //![2] //![3] QChart *chart = new QChart(); chart->legend()->hide(); chart->addSeries(series); //根据已添加到图表中的系列为图表创建轴。以前添加到图表中的任何轴都将被删除 chart->createDefaultAxes(); chart->setTitle("Simple line chart...