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Ruby Programming
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Ruby Tk



The Ruby Application Archive contains several extensions that provide Ruby with a graphical user interface (GUI), including extensions for Tcl/Tk, GTK, OpenGL, and others.

The Tk extension is bundled in the main distribution and works on both Unix and Windows systems. To use it, you need to have Tk installed on your system. Tk is a large system, and entire books have been written about it, so we won't waste time or resources by delving too deeply into Tk itself, but instead concentrate on how to access Tk features from Ruby. You'll need one of these reference books in order to use Tk with Ruby effectively. The binding we use is closest to the Perl binding, so you probably want to get a copy of Learning Perl/Tk  or Perl/Tk Pocket Reference .

Tk works along a composition model---that is, you start off by creating a container widget (such as a TkFrame or TkRoot) and then create the widgets that populate it, such as buttons or labels. When you are ready to start the GUI, you invoke Tk.mainloop. The Tk engine then takes control of the program, displaying widgets and calling your code in response to GUI events.
Ruby Programming
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