    # File lib/rubygame/event.rb, line 140
            def Rubygame.key2str( sym, mods )
                    if (mods.include? K_LSHIFT) or (mods.include? K_RSHIFT)
                            return (Rubygame::Key::KEY2UPPER[sym]\
                                    or Rubygame::Key::KEY2ASCII[sym] or "")
                    else
                            return (Rubygame::Key::KEY2LOWER[sym]\
                                    or Rubygame::Key::KEY2ASCII[sym] or "")
                    end
            end