Home Accessibility Courses Twitter The Mouth Facebook Resources Site Map About Us Contact
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 - First Frame
First Widgets, Geometry and Events example from a Well House Consultants training course
More on First Widgets, Geometry and Events [link]
Source code: tk_wm Module: T217
#!/usr/bin/env wish

proc review {what} {
        global value
        switch $what {
                1 {set value 1}
                > {set value [expr $value + 1]}
                < {set value [expr $value - 1]}
                6 {set value 6}
        .first config -state [lindex "disabled normal" [expr $value > 1]]
        .backward config -state [lindex "disabled normal" [expr $value > 1]]
        .forward config -state [lindex "disabled normal" [expr $value < 6]]
        .last config -state [lindex "disabled normal" [expr $value < 6]]
        set size [wm geometry .]
        regexp \(\[0-9\]+\)x\(\[0-9\]+\) $size sz broad tall
        .ans config -text "$value\n\n$broad by $tall"

wm aspect . 3 2 3 2
wm minsize . 300 200
wm geometry . 300x200
wm title . "The tk_wm program!"

set value 3
frame .highline

button .highline.finish -text done -command exit
label .highline.title -text "1 to 6 demonstration"

label .ans -text $value -font 12x24 -background black -foreground white
button .first -text first -disabledforeground red -command {review 1}
button .backward -text down -command {review <}
button .forward -text up -command {review >}
button .last -text last -disabledforeground red -command {review 6}

pack .highline.finish -side right
pack .highline.title -fill both -expand true

pack .highline -side top -fill x
pack .ans -fill both -ipadx 10 -ipady 10 -expand true
pack .first .backward .forward .last -side left -fill both -expand true

. config -borderwidth 10 -bg cyan -relief groove

Learn about this subject

This example is covered on the following public courses:
 * Learning to program in Tcl
 * Tcl/Tk
 * Tcl Programming
and is fully described on the course or in your printed course manual

Books covering this topic
Yes. We have over 700 books in our library. Books covering Tcl, Tk and Expect are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

Other Examples
This example comes from our "First Widgets, Geometry and Events" training module. You'll find a description of the topic and some other closely related examples on the "First Widgets, Geometry and Events" module index page.

Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.

Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.

Other resources
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre.
The Horse's mouth provides a daily tip or thought.
• Further resources are available via the resources centre.
• All of these resources can be searched through through our search engine
• And there's a global index here.

Web site author
This web site is written and maintained by Well House Consultants.

Purpose of this website
This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.

Conditions of use
Past attendees on our training courses are welcome to use individual examples in the course of their programming, but must check the examples they use to ensure that they are suitable for their job. Remember that some of our examples show you how not to do things - check in your notes. Well House Consultants take no responsibility for the suitability of these example programs to customer's needs.

This program is copyright Well House Consultants Ltd. You are forbidden from using it for running your own training courses without our prior written permission. See our page on courseware provision for more details.

Any of our images within this code may NOT be reused on a public URL without our prior permission. For Bona Fide personal use, we will often grant you permission provided that you provide a link back. Commercial use on a website will incur a license fee for each image used - details on request.

You can Add a comment or ranking to this page

© WELL HOUSE CONSULTANTS LTD., 2021: 48 Spa Road • Melksham, Wiltshire • United Kingdom • SN12 7NY
PH: 01144 1225 708225 • EMAIL: info@wellho.net • WEB: http://www.wellho.net • SKYPE: wellho

PAGE: http://www.wellho.net/resources/ex.php • PAGE BUILT: Sun Oct 11 14:50:09 2020 • BUILD SYSTEM: JelliaJamb