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

Archetype base class for all [incr Tk] mega-widgets
Toplevel base class for mega-widgets in a top-level window
Widget base class for mega-widgets within a frame
itk framework for building mega-widgets in Tcl/Tk
itkvars variables used by [incr Tk]
usual The usual command is used outside of an [incr Tcl] class definition to define the usual set of option-handling commands for a component widget.