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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
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 just half an hour on Tk and wish.

* At the start of your code, define procedures that are to be performed when buttons are pressed or data is entered in some other way

* Define the components of your GUI, including a note of which function each is linked to

* Define the layout - how the components are drawn in relationship to each other and to the window in which they appear

... and that can be about it!

The example shown here is three concurrent runs of a GUI with a simple increment / decrement counter that's also changing the colour of the targeted label on the interface. A simple but effective demonstration.

Full source code is [here].

(written 2013-11-15, updated 2013-11-16)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
T248 - Tcl/Tk - A Review of Tcl and Tk Basics
  [1092] Tcl training - often for a larger group - (2007-02-24)
  [1174] Installing Tcl and Expect on Solaris 10 - a checklist - (2007-05-02)
  [1181] Good Programming practise - where to initialise variables - (2007-05-09)
  [1469] Curley brackets v double quotes - Tcl, Tk, Expect - (2007-12-12)

T216 - Tcl/Tk - Introduction to Tk
  [595] Add a friendly front end with Tk - (2006-02-08)
  [2040] Error: Cant read xxxxx: no such variable (in Tcl Tk) - (2009-02-14)
  [4460] Using Object Oriented Tcl and the Tk toolkit together - real life example - (2015-03-12)


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Lists in Tcl - fundamentals in a commented source code example
Tcl + Tk (Wish) - an introduction and revision example
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Regular Expression Substitution - Tcl
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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