framework 'AppKit'

class AppDelegate
  def windowWillClose(notification)
    exit
  end

  def yes(sender)
    puts "YES!"
  end

  def no(sender)
    puts "NO!"
  end
end

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

window = NSWindow.alloc.initWithContentRect([500, 400, 300, 100],
                                            styleMask:NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask,
                                            backing:NSBackingStoreBuffered, defer:false)
window.title = 'MacRuby: Button'
window.level = NSModalPanelWindowLevel
window.delegate = app.delegate

y_button = NSButton.alloc.initWithFrame([20, 0, 100, 100])
y_button.bezelStyle = 1
y_button.title = 'YES!'
y_button.target = app.delegate
y_button.action = 'yes:'

n_button = NSButton.alloc.initWithFrame([180, 0, 100, 100])
n_button.bezelStyle = 1
n_button.title = 'NO!'
n_button.target = app.delegate
n_button.action = 'no:'

window.contentView.addSubview(y_button)
window.contentView.addSubview(n_button)

window.display
window.orderFrontRegardless
app.run