Tcl/Tk provides an
interactive development environment for building Graphical User Interface
applications with incredible speed. Tcl/Tk applications look like they were
constructed with the Motif toolkit, but they can be written in a fraction of the
time. This PDF covers the following topics related to Tcl/Tk : Objects and
Classes, Inheritance, Namespaces, Interactive Development, Autoloading, Adding C
code to [INCR TCL] Classes, Simple Example, Inheritance and Composition,
Building Applications with Mega-Widgets.