This Python script contains the main classes and functions needed to write a graphical user interface employing the Qt for Python API.

The Qt graphics framework always consits of a scene wich contains some graphics items and a view on the scene (i.e. zoom, pan, etc.). Obviously, there can be more than one scene. The basic building blocks of such a Graphics View Framework are implemented in the script. It can be used as a starting point for new drawing GUIs.