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Perl module P307
Exercises, examples and other material relating to training module P307. This topic is presented on public course Perl for Larger Projects

Tk provides a very powerful GUI (Graphic User Interface) to Perl. You can use it to build a window with buttons, text entry boxes, sliders and graphics, and then use that window to control and report on an application.

Related technical and longer articles
Graphic User Interfaces (GUIs)

Articles and tips on this subjectupdated
3009Expect in Perl - a short explanation and a practical example
Around 20% of delegates on our Tcl Courses are using Tcl because of the Expect package that extends it to "choreograph" interaction with other systems and processes, and yet the Expect module in Perl (Expect.pm) is decidedly niche and we cover it on our Perl for Larger Projects course only on request. ...
599Perl/Tk real time display
It's a real pleasure to be having an opportunity at the tail end of this week to write some examples that are combining Perl, Tk, and OO techniques. This clock is generated on a canvas, and updates every second. It's generated in its own frame and schedules its own events, so you could easily use it ...
1340Tk locks up - 100% c.p.u. on a simple program (Tcl, Perl, Python)
Fighting packs and grids - Tk under Tcl, Perl, Python You'll use pack OR grid to place components into your frame in a Tcl/Tk application. You may use both pack and grid within the same program, but NOT within the same frame. If you do, not only will you be writing code that has no clear meaning, ...
1310Callbacks - a more complex code sandwich
When you write a piece of code, you're normally putting the filling into the sandwich; there's a built-in program in your computer that controls the loading and running of the code thst you've written, and there is a whole library of standard pieces of code that you call to perform the low level operations. ...
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) ...
596The magic of -textvariable
If you're writing a GUI based application, you'll need to hold pertinent information in variables in your program, AND display that pertinent information to the user. The obvious way of doing this is to provide code that updates the display as required - in the case of Tcl/Tk you might write    .wname ...
738(Perl) Callbacks - what are they?
In most programming applications, you'll write code that calls system functions or subroutines - for example, you'll write a program that reads data from a file (via a system call), splits the data into an array (perhaps via a further system call), and prints it out (through system calls). On a few ...
Examples from our training material
bob   An interactive application with a Tk GUI
bobbb   An interactive application with a Tk GUI
ptkcl2.pl   Clock using Perl/Tk
ptkclock.pl   Simpler version of Perl/Tk clock
tk1   A simple GUI with Perl/Tk
tk2   Drawing graphics on a canvas with Perl/Tk
tk3   An interactive application with a Tk GUI
tk3.pl   A toggle button implemented in Perl/Tk
tk4.pl   An interactive form on a grid (tk)
tk5.pl   Tk demo - fill in form, moving graphic
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
What is Perl/Tk?
Installing Perl/Tk.
First Perl/Tk program.
Widget types.
Packing, events and graphics.
Assigning an action to a button.
Using Tk over a network.
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 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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