B> element factory creates a new element
in the current theme whose visual appearance is drawn using the
Microsoft Visual Styles API which is responsible for the themed styles
on Windows XP and Vista. This factory permits any of the Visual
Styles parts to be declared as Ttk elements that can then be
included in a style layout to modify the appearance of Ttk widgets.
<P>
<I>className</I> and <I>partId</I> are required parameters and specify
the Visual Styles class and part as given in the Microsoft
documenta