Guru
Re: Constructing a custom widget in QGraphicsScene
QGraphicsWidget inherits from QGraphicsObject, which inherits from QGraphicsItem, which has a QGraphicsItem::paint() virtual method.
However for your purposes you might find is easier to use QGraphicsProxyWidget to host a ready-to-go scientific graphics widget like Qwt or QCustomPlot instead of rolling your own.
<=== The Great Pumpkin says ===>
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