require 'osx/cocoa'
include OSX

class AppDelegate <  NSObject
   def sayHello(sender)
     puts "Hello again, World!"
   end
end


if $0 == __FILE__ then
  app = NSApplication.sharedApplication()

  app.setDelegate(AppDelegate.alloc.init)

  frame = [200.0, 300.0, 250.0, 100.0]
  win = NSWindow.alloc.initWithContentRect_styleMask_backing_defer(frame, 15, 2, 0)
  win.setTitle 'HelloWorld'
  win.setLevel(3)                       # floating window

  hel = NSButton.alloc.initWithFrame [10.0, 10.0, 80.0, 80.0]
  win.contentView.addSubview(hel)
  hel.setBezelStyle(4)
  hel.setTitle( 'Hello!' )
  hel.setTarget( app.delegate )
  hel.setAction( "sayHello:" )

  bye = NSButton.alloc.initWithFrame [100.0, 10.0, 80.0, 80.0]
  win.contentView.addSubview(bye)
  bye.setBezelStyle( 4 )
  bye.setTarget(app)
  bye.setAction('stop:')
  bye.setEnabled( true )
  bye.setTitle( 'Goodbye!' )

  win.display()
  win.orderFrontRegardless()            ## but this one does

  app.run()
end

ruby HelloWorld.rb