# File rbSnack/tkSnack.rb, line 835
  def attachWaveform (snd, x=0, y=0, options=nil, &op_block); 
    options=SnOp::makeOps(options, &op_block)
    raise "attachSound requires a Sound object as an argument" unless snd.type==Sound
    snd.waveform_to_canvas(self, x, y, options)
  end