There is a chance, though, that your UI background has come from places where you
have not been using a traditional widget framework, where either you have been
doing all of the drawing yourself (e.g., game frameworks) or where the UI is defined
more in the form of a document (e.g., classic Web development). This chapter is
aimed at you, to give you some idea of what we are talking about when discussing
the notion of widgets and containers.