----conlistwin.rb-------------------------

require 'ncurses'

class ConListWin < Ncurses::WINDOW
        def initialize()
                super( Ncurses.LINES, Ncurses.COLS/4, 0, 0 )
        end
end

------------------------------------------
----windows.rb----------------------------

#!/usr/bin/ruby

require "ncurses"
require 'conlistwin.rb'

begin
        Ncurses.initscr
        Ncurses.cbreak
        Ncurses.noecho
        Ncurses.nonl

        left = ConListWin.new

        left.keypad(true)
        left.border(1, 0, 1, 1, 1, 1, 1, 1)
        left.noutrefresh()

        right = Ncurses::WINDOW.new( Ncurses.LINES, Ncurses.COLS/4*3, 0, Ncurses.COLS/4 )
        right.noutrefresh()

        Ncurses.doupdate()

        left.move(3, 3)
        left.addstr("Press a key to quit")
        left.getch

ensure
        Ncurses.echo
        Ncurses.nocbreak
        Ncurses.nl
        Ncurses.endwin
end
---------------------------------------
----errors-----------------------------
/usr/lib64/ruby/site_ruby/1.8/ncurses.rb:88:in `newwin': wrong number of arguments (0 for 4) (ArgumentError)
        from /usr/lib64/ruby/site_ruby/1.8/ncurses.rb:88:in `new'
        from ./windows.rb:13
---------------------------------------