Draw button(similer to QPushButton) using the QPainter.

[tbscope]

- I am using resizing event for resizing the QGraphicsView:
QGraphicsView::resizeEvent(event);
fitInView(scene->sceneRect(), Qt::KeepAspectRatio);

- But during the resize controls are not synchronize with the QGraphicsView.

What can be the cause of this?

What do you mean with synchronize? Do you mean that all the objects jump around?

I have one more doubt that can I use QPainter drawing in "QGraphicsView".

Sure, but it's pointless as the view is a container for items that are drawn on top of it.
The correct way to do this is create a custom QGraphicsItem and implement the paint function. See the QGraphicsItem documentation.