def _create_footer_window h = 1 , w = Ncurses.COLS, t = Ncurses.LINES-1, l = 0
      ewin = Canis::Window.new(h, w , t, l)
      #ewin.bkgd(Ncurses.COLOR_PAIR($promptcolor));
      @window = ewin
      return ewin
    end
def _create_footer_window h = 1 , w = Ncurses.COLS, t = Ncurses.LINES-1, l = 0
      ewin = Canis::Window.new(h, w , t, l)
      #ewin.bkgd(Ncurses.COLOR_PAIR($promptcolor));
      @window = ewin
      return ewin
    end
for debugging

 create a window at bottom and show and hide it.