require 'phi'

form = Phi::Form.new(:form1, 'form‚Ĺ‚·')
button = Phi::SpeedButton.new(form, :button1, 'hoge')
button.flat = true
button.allow_all_up = true
button.group_index = 1
button.on_click = proc do
  if button.down?
    button.caption = '1'
  else
    button.caption = '2'
  end
end
form.show
Phi.mainloop