Re: [PyOpenGL-Users] _base_glutInit( ctypes.byref(count), holder ) TypeError: 'NoneType' object is not callable

[Alejandro S. <as...@gm...>]

Hi John,

On Jan 29, 2010, at 8:22 PM, John Lutz <joh...@gm...> wrote:

> Hey Guys!,
>
> Does anyone know what the fix for the following error is:
>
> C:\dev\PyOpenGL-Demo-3.0.1b1\PyOpenGL-Demo\NeHe>python
> Python 2.5.4 (r254:67916, Dec 23 2008, 15:10:54) [MSC v.1310 32 bit  
> (Intel)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import lesson5.py
> Hit ESC key to quit.
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "lesson5.py", line 240, in <module>
>     main()
>   File "lesson5.py", line 195, in main
>     glutInit(sys.argv)
>   File "C:\Python25\Lib\site-packages\OpenGL\GLUT\special.py", line  
> 323, in glutInit
>     _base_glutInit( ctypes.byref(count), holder )
> TypeError: 'NoneType' object is not callable
> >>>
>
> I am running 2.5 on XP with NVidia drivers. I have GLUT, GLU, OpenGL  
> installed on the system.
> I can get NeHe samples working from within VC++ 2010, just not Python.

This might sound trivial, but are you importing package "ctypes" from  
within lesson5.py? It seems as if it didn't know what ctypes.byref is.

Best regards,
Alejandro.-

>
> Thanks!,
> John
>
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