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Tcl/Tk module T216
Introduction to Tk
Exercises, examples and other material relating to training module T216. This topic is presented on public courses Learning to program in Tcl, Tcl/Tk, Tcl Programming

Would you like to access your Tcl script through a Graphic User Interface? The Tk GUI, which is distributed with most releases of Tcl, provides such a capability. In this module we introduce you to Tk and see a couple of short examples of Tk in use.

Related technical and longer articles
Graphic User Interfaces (GUIs)

Articles and tips on this subjectupdated
4460Using Object Oriented Tcl and the Tk toolkit together - real life example
There are all sorts of ways to look at the survey data we gathered last October on the TransWilts trains, and one fact I'm particularly interested in is the journey lengths of passengers. I have all the information to hand that I need to work this out - but in different files: Survey data [here] Station ...
4208Tcl + Tk (Wish) - an introduction and revision example
Whenever I teach Tcl with Tk, I'm delighted to be reminded how easy it is to put together a graphic user interface (GUI) with Tcl. They may not be the world's prettiest, but they're quick, straightforward and functional. And so it was on the final day of our Tcl Programming course last week, when I did ...
2040Error: Cant read xxxxx: no such variable (in Tcl Tk)
If you set a Tcl (Tcl/Tk) variable within a proc, or within the callback command of a widget, that variable does not exist at run time until you have run the proc or callback procedure, or until you have initialised the variable in some other way. Let's see a Tk example. I have created a window with ...
595Add a friendly front end with Tk
With a Tk Graphic User Interface, you can add a friendly look and feel to an application running on your workstation if it's written in Tcl (Tcl/Tk), Perl (Perl/Tk) or Python (TkInter). Whichever language you build your GUI on to, you'll want to remember 1. Create your components (known as widgets) ...
Examples from our training material
gui_2   Classis Tk structure - procs, widgets, geometry ...
tk_accesscount   Tcl/Tk - Access Log File counter!
tk_h2   Report Date Information on a widget
tk_hello   Tcl/Tk - Report Date Information
udq   Widgets, Geometry Managers and Events
Background information
Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from [here].
Topics covered in this module
Hello Tcl/Tk World.
Tcl/Tk supported platforms.
Sourcing Tcl/Tk.
Our sample program.
A real application.
Feedback via the Tk window.
Widgets as commands.
A GUI front end to a data file.
The main program.
The setup proc.
The scanner proc.
The complete program.
Complete learning
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Tcl/Tk, Expect,Ruby, Lua, Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

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