A sample snippet to use puts and gets on Green Shoes.

console_test.rb

require 'green_shoes'

class ShoesIO < StringIO
  def initialize app, stdout, *args
    @app, @stdout = app, stdout
    super *args
  end

  def gets
    res = @app.ask @stdout.string.split("\n").last
    res.to_s + "\n"
  end
end

Shoes.app do
  stack do
    @console = edit_box
    @button = button "Ask Name"
  end

  $stdout = StringIO.new
  $stdin = ShoesIO.new self, $stdout, ''

  e = every do |i|
    @console.text = $stdout.string
  end

  @button.click do
    puts "What is your name?"
    ans = gets.chomp
    ans = ans == '' ? 'no answer' : ('Name: ' + ans)
    puts ans
  end
end

Original code was written by Timothy.