Package itk

Object oriented extensions to Tk

http://incrtcl.sourceforge.net/itcl/

[incr Tk] is Tk extension that provides object-oriented features that are
missing from the Tk extension to Tcl.  The OO features provided by itk are
useful for building megawidgets.
Tcl/Tk Keywords
Keyword Description
Archetype base class for all [incr Tk] mega-widgets
itk framework for building mega-widgets in Tcl/Tk
itkvars variables used by [incr Tk]
Toplevel base class for mega-widgets in a top-level window
usual access default option-handling commands
Widget base class for mega-widgets within a frame