Chapter 8. [incr Tk]

[incr Tk] is not part of the core Tcl/Tk package, but can be obtained for free at http://www.tcltk.com/itk. This chapter covers Version 3.0.[1]

[incr Tk] provides an object-oriented framework for creating new graphical widgets, known as mega-widgets. Mega-widgets are made up of standard Tk widgets, and one mega-widget can contain nested mega-widgets. The widgets and mega-widgets that go into a mega-widget are called components.

Using the basic widgets provided by the Tk toolkit and the object-oriented programming capabilities of [incr Tcl], [incr Tk] allows the user to write new widgets in Tcl that look and act just like the ordinary Tk widgets.

The [incr Tk] distribution also comes with more than 30 predefined mega-widgets.

[1] This chapter is based on the quick reference in Michael McLennan’s Chapter 3 of Tcl/Tk Tools (O’Reilly & Associates).

Get Tcl/Tk in a Nutshell now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial