hello_macruby.rb

framework 'Cocoa'

class AppDelegate
  def applicationDidFinishLaunching(notification)
    voice_type = "com.apple.speech.synthesis.voice.GoodNews"
    @voice = NSSpeechSynthesizer.alloc.initWithVoice(voice_type)
  end

  def windowWillClose(notification)
    puts "Bye!"
    exit
  end

  def say_hello(sender)
    @voice.startSpeakingString("Hello World!")
    puts "Hello World!"
  end
end

class MyWindow

  def initialize
    app = NSApplication.sharedApplication

    window = NSWindow.alloc.initWithContentRect([200, 300, 300, 100],
                                      styleMask: NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask|NSResizableWindowMask,
                                        backing: NSBackingStoreBuffered,
                                          defer: false)

    window.title      = 'MacRuby: The Definitive Guide'
    window.level      = NSNormalWindowLevel
    window.delegate   = app.delegate

    button = NSButton.alloc.initWithFrame([80, 10, 120, 80])
    button.bezelStyle = 4
    button.title      = 'Hello World!'
    button.target     = app.delegate
    button.action     = 'say_hello:'
    window.contentView.addSubview(button)

    window.orderFrontRegardless

    @window = window
  end

  def window
    @window
  end
end

app = NSApplication.sharedApplication
app.delegate = AppDelegate.new

w = MyWindow.new
w.window.display


app.run