How to create a menu using GraphicsScene with buttons

[mounipanditi]

Hi i am trying to create a menu using QGraphicsScene and so to do it i was walking through the examples that are already given by Qt and i thought to use Blurpicker example.
I want to replace the Blurpicker example with Buttons in place of Icons and need to add a signal and slot in order to execute the intended functionality. And my embedded device is a touchscreen one so i also need to add scrolling the button with hand gestures in addition to scrolling with left and right arrow buttons.
In order to achieve my UI i am reading about

QGraphicsScene,QGraphicsItem,QGraphicsProxyWidget

but i am unable to get where and how to start.

Please guide me.

Thanks in advance,
Mounika.P