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Qgraphicsview

A QGraphicsView is a class from the Qt toolkit which provides a widget for displaying the contents of a QGraphicsScene.

Qwidget

QWidget is key part of the Qt C++ classes



Others

Example

I ve read that painting to a qwidget is sometimes faster than qgraphicsview but it would by a lot of extra work for the mouse handling i think

from question  

Qt: Workaround for slow vertical scrolling in QGraphicsView with many items

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