Exercises, examples and other material relating to training module T216. This topic is presented on public course Tcl/Tk
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 articlesGraphic User Interfaces (GUIs)
|Articles and tips on this subject||updated|
|4208||Tcl + 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 ...
|2040||Error: 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 ...
|595||Add 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 |
This module is available under an Open Training Notes License
for free download from http://www.training-notes.co.uk
Topics covered in this module
Hello Tcl/Tk World.
Tcl/Tk supported platforms.
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.
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