QGraphicsWidget - How does it work?

[been_1990]

I've been reading the Docs and searching for examples on QGraphicsWidget. I've been doing my project with QGraphicsItem, but now I found out only QGraphicsWidget has a layout. Now I want to use all the QGraphicsWidget functionality.
But I really cant understand how it works. Do I add a QGraphicsItem to it, or can I directly add a QPixmap?
It says

QGraphicsWidget::QGraphicsWidget ( QGraphicsItem * parent = 0, Qt::WindowFlags wFlags = 0 )
"The optional parent argument is passed to QGraphicsItem's constructor."

QGraphicsWidget::QGraphicsWidget ( QGraphicsItem * parent = 0, Qt::WindowFlags wFlags = 0 )
"The optional parent argument is passed to QGraphicsItem's constructor."

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What does that mean? That to each QGraphicsItem I have I need to create a new QGraphicsWidget for it?
Thats it. If anyone can help me "see the light", I am most grateful.