The Scene, QGraphicsScene

This class provides almost all methods required for multiple graphics items (QGraphicsItem), even though we only used it with a single QGraphicxPixmapItemin the previous example. In this section, we will review some of the most important functions in this class. As it was mentioned before, we'll mainly focus on the properties and methods required for our use case, since covering all methods, although they are all important, would be fruitless for the purpose of our book. We will skip the constructor functions of QGraphicsScene since they are simply used to take the dimensions of the scene and create a scene accordingly. As for the rest of the methods and properties, here they are, and for some of them that may not be too obvious, you can find a simple example code that you can try out with the Graphics_Viewer project we created earlier in this chapter:

• The addEllipse, addLine, addRect, and addPolygon functions, as it can be guessed from their names, can be used...