[英]How do you paint two lines on QcustomPlot in QT in Ubuntu?
I have Ubuntu 14.04
, I'm working with QT
C ++
. 我有Ubuntu 14.04
,正在使用QT
C ++
。 I will paint two lines ( in QcustomPlot
) Each line has a different color from the other. 我将绘制两行(在QcustomPlot
),每一行具有QcustomPlot
不同的颜色。 I will to paint a line Red Then line green, like this My code : 我将画一条红色的线然后画一条绿色的线, 就像我的代码:
customPlot->addGraph() ; // color red
customPlot->addGraph() ; // color green
customPlot->graph(0)->setPen(QPen(Qt::red));
customPlot->graph(1)->setPen(QPen(Qt::red));
customPlot->graph(1)->setPen(QPen(Qt::green);
customPlot->graphe(0)->adddata(1,1) ;
customPlot->graphe(0)->adddata(5,1) ;
customPlot->graphe(1)->adddata(5,1) ;
customPlot->graphe(1)->adddata(10,1) ;
customPlot->graphe(0)->adddata(10,1) ;
customPlot->graphe(0)->adddata(15,1) ;
The problem is that the red line painted on the green How to solve the problem? 问题是红线涂在绿色上怎么解决问题?
QCPItemLine *item ;
item = new QCPItemLine(ui->courbe);
customPlot->addItem(item);
item->setPen(QPen(Qt::red));
item->start->setCoords(1,1);
item->end->setCoords(5,1);
item = new QCPItemLine(ui->courbe);
item->start->setCoords(6,1);
item->end->setCoords(10,1);
customPlot->replot();
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