require 'OSX/cocoa'

class CloseDelegate < OSX::NSObject
  def windowWillClose( sender )
    OSX::NSApp.terminate_ sender
  end
end

# Instantiate the shared App
OSX::NSApplication.sharedApplication

window = OSX::NSWindow.alloc
window.initWithContentRect_styleMask_backing_defer_( 
  OSX::NSMakeRect(50,50,200,400), 
  OSX::NSTitledWindowMask + OSX::NSClosableWindowMask, 
  OSX::NSBackingStoreBuffered, true)

window.setDelegate CloseDelegate.alloc.init

window.makeKeyAndOrderFront nil

# run the main loop
OSX::NSApplication.sharedApplication.run