class_docstr: Tkinter backend for Canvas abstract class.
  Uses pyopengltk.OpenGLFrame as the internal tk.Frame instance that
  is able to receive OpenGL draw commands and display the results,
  while also being placeable in another Toplevel window.
class_docstr_tok: ["Tkinter","backend","for","Canvas","abstract","class",".","Uses","pyopengltk.OpenGLFrame","as","the","internal","tk.Frame","instance","that","is","able","to","receive","OpenGL","draw","commands","and","display","the","results",",","while","also","being","placeable","in","another","Toplevel","window","."]
docstr: Set the current fullscreen state.
  
  Has no effect for widgets. If you want it to become fullscreen,
  while embedded in another Toplevel window, you should make that
  window fullscreen instead.
code: def _vispy_set_fullscreen(self, fullscreen):
      """Set the current fullscreen state.
  
      Has no effect for widgets. If you want it to become fullscreen,
      while embedded in another Toplevel window, you should make that
      window fullscreen instead.
      """
      self._fullscreen = bool(fullscreen)
      if self.top:
          self._vispy_set_visible(True)
  
imports: from __future__ import division
  from time import sleep
  import warnings
  from ..base import BaseApplicationBackend, BaseCanvasBackend, BaseTimerBackend
  from ...util import keys
  from ...util.ptime import time
  from ...gloo import gl
label_desc: Use image node_id 26 for calling the CanvasBackend obj's underlying member method code with example usage: obj._vispy_set_fullscreen(fullscreen) without return types