code: def on_draw(self, event):
      gloo.clear("white")
      self.program.draw(mode="triangle_strip")
  
file_path: vispy/examples/demo/gloo/high_frequency.py
imports: from vispy import gloo, app, keys
label_desc: Use image node_id 3 for calling the Canvas obj's underlying member method code with example usage: obj.on_draw(event) without return types