CANVAS1

import appuifw
import e32
import graphics
import sysinfo

def quit():
  global run
  run=0

appuifw.app.exit_key_handler=quit
appuifw.app.screen='full'
appuifw.app.body=c=appuifw.Canvas()
sz=sysinfo.display_pixels()
ly=graphics.Image.new(sz)
run=1
while run:
  ly.clear(0xff)
  c.blit(ly)
  e32.ao_yield()