Non top-level opengl widget in tkinter

Question

I have a existing tkinter gui to which I would like to add a openGL widget. However, it appears that the OpenGL widget only works if it is toplevel.

This works:

from OpenGL.Tk import *
from Tkinter import *
herp=Opengl(height=100,width=100)
herp.pack()
herp.mainloop()

But this does not:

from OpenGL.Tk import *
root=Tk()
b=Opengl(root,height=100,width=100)
b.pack()
root.mainloop()

Giving me the following error:

Traceback (most recent call last):
  File "\\sith\user_files\2013-Softerns\new_gui_planning\LearningOpenGL\integration_3.py", line 4, in <module>
    b=Opengl(root,height=100,width=100)
  File "C:\Python27_32bit\lib\site-packages\OpenGL\Tk\__init__.py", line 267, in __init__
    apply(RawOpengl.__init__, (self, master, cnf), kw)
  File "C:\Python27_32bit\lib\site-packages\OpenGL\Tk\__init__.py", line 216, in __init__
    Widget.__init__(self, master, 'togl', cnf, kw)
  File "C:\Python27_32bit\lib\lib-tk\Tkinter.py", line 2036, in __init__
    (widgetName, self._w) + extra + self._options(cnf))
TclError: invalid command name "togl"

Do I need to import togl?

The only other thing I could find on this is:

http://computer-programming-forum.com/56-python/ece79da9298c54de.htm

But their solution does not work for me.

Answer 1

Looks like the PyOpengl wrapper for togl is using a default root window.

You should be able to get a reference to it via the master attribute of your Opengl widget.

from Tkinter import *
from OpenGL.Tk import *

b=Opengl(height=100,width=100)
root = b.master
f = Frame(root, width=100, bg='blue')
f.pack(side='left', fill='y')
b.pack(side='right', expand=1, fill='both')

root.mainloop()