Overriding function from QGraphicsItemGroup without inheritance

[depecheSoul]

Hello.

I have made a simple class GraphicsView that inherits QGraphicsView, and that class is the centry widget of MainWindow class.

The GraphicsView class has one simple assignment: to display QGraphicsView and set QGraphicsScene on QGraphicsView. In the QGraphicsScene I have a QGraphicsItemGroup that has two QGraphicsRectItem.

I want to when I click on QGraphicsItem that QGraphicsRectItem change one another (one is visible and red, second is not visible and blue)

So far I have made when I click on QGraphicsView it changes, but I want to make when I click on QGraphicsItemGroup it changes.

I know that this can be done with inhereting QGraphicsItemGroup, but I am interesting to see is this possible without inheritance.

Thanks.

[edit: fixed typo in title, Eddy]

[Wilk]

Hello.
Possible solution is to reimplement QGraphicsView's mousePressEvent. There you may use something like this:
@
QGraphicsItemGroup *clicked_group;
if (clicked_goup = qgraphicsitem_cast<QGraphicsItemGroup>(scene() ->itemAt(mapToScene (event ->pos())))) {
// Code for making different items of group (in)visible. I don't know how actualy you prefer to do it.
}
@