class_docstr: Pyglet backend for Canvas abstract class.
class_docstr_tok: ["Pyglet","backend","for","Canvas","abstract","class","."]
code: def our_draw_func(self, dummy=None):
      if not self._draw_ok or self._vispy_canvas is None:
          return
      # (0, 0, self.width, self.height))
      self._vispy_canvas.set_current()
      self._vispy_canvas.events.draw(region=None)
  
imports: from __future__ import division
  from packaging.version import Version
  from time import sleep
  from ..base import BaseApplicationBackend, BaseCanvasBackend, BaseTimerBackend
  from ...util import keys
  from ...util.ptime import time
  from ...None import config
label_desc: Use image node_id 22 for calling the CanvasBackend obj's underlying member method code with example usage: obj.our_draw_func(dummy) without return types