How to use QGraphicsView in Qt?

I need to create a view like this in Qt

If I click the circle then it'll give a popup message like this "You clicked 2 circle."

I need to add the circ开发者_Go百科le during run time in any location. How to implement this in Qt using QGraphicsView? Or are there any other better way to implement this?

---

The following page from Qt documentation can help you: http://doc.qt.io/qt-5/graphicsview.html The Drag and drop example will help you to know how deals with your QGraphicItems

Hope that helps