Whats wrong with QList<QGraphicsItem>

[ecanela]

The QGraphicsItem is a abstrac class and can't be used directly, QGraphicsItem::paint ()is a pure virtual function, so you can't create a object of this class. QGraphics is used as a base class

because of this..

QList<QGraphicsItem>  //don't compile. can't create a object of a abstract class
QList<QGraphicsItem *> // works because is posible create a pointer of a abstract class, polymorphism
QList<SubclassGraphicsItem> //works because the class is not abstract

QList<QGraphicsItem>  //don't compile. can't create a object of a abstract class
QList<QGraphicsItem *> // works because is posible create a pointer of a abstract class, polymorphism
QList<SubclassGraphicsItem> //works because the class is not abstract

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