WidgetWrapper is a base class that puts a widget inside a Frame. This is useful if you want a class to have the same semantics as an existing widget, but have an enhanced appearance. For example, you can create a LabelEntry class which is exactly like an Entry, but has a Label next to the Entry (see below). Note that WidgetWrapper must be the first of the base classes because it overrides the "pack" method.

__init__ (
        self,
        master=None,
        cnf={},
        **kw,
        )

pack (
        self,
        cnf={},
        **kw,
        )