> 1) Create a TkVariable, e.g.
> 
> val = TkVariable.new

I found an example using this approach but it only applies to the use of 
individual radiobuttons not the radiobox.
In tcl the way to get the active button is "pathname get".
But the Ruby API expects an argument for "get" which seems to be exactly 
that information I'd like to read.

Does someone have an example of the usage of get with the Iwidgets 
radiobox in Ruby?

Stefan
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