code: def choicebox(msg="Pick something."
      , title=" "
      , choices=()
      ):
      
      if len(choices) == 0: choices = ["Program logic error - no choices were specified."]
  
      global __choiceboxMultipleSelect
      __choiceboxMultipleSelect = 0
      return __choicebox(msg,title,choices)
docs: Present the user with a list of choices.
      return the choice that he selects.
      return None if he cancels the selection selection.
  
      @arg msg: the msg to be displayed.
      @arg title: the window title
      @arg choices: a list or tuple of the choices to be displayed