putting data to a NSComboBox manually in Macruby

gistfile1.rb

#!/usr/local/bin/macruby
framework 'Cocoa'

class TestDelegate
  attr_accessor :window
  def applicationDidFinishLaunching(notification)
    @window.delegate = self
    
    # set the content view size and Position
    combo_box_rect = NSMakeRect(165, 150, 170, 25)
    
    # initialize the combobox
    combo_box = NSComboBox.alloc.initWithFrame(combo_box_rect)
    
    # fill the combo box  (if you have a combobox connect via Interface Builder, this line & probably the next)
    combo_box.addItemsWithObjectValues(%W(one two three four five six seven))
    
    # select on start the first element
    combo_box.selectItemAtIndex(0)
    
    # add to the content view
    @window.contentView.addSubview(combo_box)
    
    @window.center    
  end
  
  def windowWillClose(sender); exit(1); end
  
end





# Create the Application
application = NSApplication.sharedApplication
application.delegate = TestDelegate.new

# create the Application Window
frame = [0.0, 0.0, 500, 300]
window = NSWindow.alloc.initWithContentRect frame, 
                                  styleMask: NSTitledWindowMask | NSClosableWindowMask,
                                    backing: NSBackingStoreBuffered,
                                      defer: false

window.display
window.makeKeyAndOrderFront(true)

application.delegate.window = window
application.run