wxWidgets framework architecture
wxWidgets application framework
High level languages using wxWidgets API
wxUniversal application framework
wxUniversal is a project to create a set of widgets that are implemented
in wxWidgets itself. In all previous ports, with some exceptions,
each widget class is a wrapper around an existing implementation
on that platform.
When you use wxUniversal, you have the same API classes set as wxWidgets, but these make a call to a custom widget drawing using GDI primitives instead of system ones.