#!/usr/bin/env python

from OpenGL.GL import *
from OpenGL.Tk import *

def redraw(o):
  glClearColor(0, 0, 1, 0)
  glClear(GL_COLOR_BUFFER_BIT)

o = Opengl(width = 200, height = 200, double = 1)
o.redraw = redraw
o.pack(side = 'top', expand = 1, fill = 'both')
o.mainloop()