IronRuby 1.0.0.0 on .NET 4.0.30319.1

C:\rubyapi\IronR>type forjp1_sjis.rb

require 'mscorlib'

require 'System.Windows.Forms'

require 'System.Drawing'

class RubyForm <>

def initialize

self.Text = "Windows Form on IronRuby"

btn = System::Windows::Forms::Button.new()

btn.Location = System::Drawing::Point.new(50, 50)

btn.Text = "押して!"

btn_Click = Proc.new() { |sender, e|

System::Windows::Forms::MessageBox.Show("テスト表示","日本語キャプション")

}

btn.Click(&btn_Click)

self.Controls.Add(btn)

end

end

System::Windows::Forms::Application.Run(RubyForm.new)

C:\rubyapi\IronR>ir -Ks forjp1_sjis.rb

shift-jis なら-Ks、utf-8 なら-Kuオプションが必要みたいです。無いと文字化けします。