Hi, I think that QcustomPlot is the best plot tool having used by me. But I, recently, am confused by one question in the 4th example of "plot-examples".
When I replace the code statement of "customPlot->axisRect()->setBackground(QPixmap("./solarpanels.jpg"));" with "customPlot->setBackground(Qt::transparent);" in the "setupScatterPixmapDemo" method, the backgroud of the plot will be not transparent, but become black. Furthermore, i found that this question will occur once the plot has a container object as the parent, even if the container object itself has image background.
Thanks in advance for your reply.