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|
|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
|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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