From: Stefan Mahlitz <stefan@...>
Date: 2007-08-23T03:49:01+09:00
Subject: Re: wxruby and rubygems seems not to work?

kazaam wrote:
> Like here: http://wxruby.rubyforge.org/wiki/wiki.pl?Installation suggested I installed wxruby2 on my linux machine with:
>   sudo gem install wxruby2-preview
> Then I tried this sample: http://wxruby.rubyforge.org/wiki/wiki.pl?Getting_Started , I modified it to run for me:
> 
> #!/usr/bin/env ruby
> 
> $Verbose=true
> 
> require 'rubygems'
> gem 'wxruby2-preview' 
>  
> 
>  class MinimalApp < App
>     def on_init
>          Frame.new(nil, -1, "The Bare Minimum").show()
>     end
>  end
>  
> 
>  MinimalApp.new.main_loop
> 
> but always when I execute it I'm getting this error:
> laptop:~/Desktop$ ./gui.rb 
> ./gui.rb:9: uninitialized constant App (NameError)
> laptop:~/Desktop$ 

You missed two lines of the tutorial:

require "wx" # wxruby2
include Wx

they should be placed below your require "rubygems"

If you leave out 'include Wx' you will have to write Wx::App, Wx::Frame etc.

Stefan