[PyOpenGL-Users] [ pyopengl-Support Requests-643668 ] WGL ChoosePixelFormat calling error

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Support Requests item #643668, was opened at 2002-11-25 12:36
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=205988&aid=643668&group_id=5988

Category: GL
Group: v2.0
Status: Open
Priority: 5
Submitted By: David Hughes (dwhughes)
Assigned to: Nobody/Anonymous (nobody)
Summary: WGL ChoosePixelFormat calling error

Initial Comment:
System: Win98, Python 2.2.2
PYOPENGL-2.0.0.44.WIN32-PY2.2.EXE
Win32 extensions v.148

Trying to run the openGLDemo .py included with Pythonwin, I 
cannot execute 
    pfd = createPIXELFORMATDESCRIPTOR() 
because I don't seem to have that function. 

I replaced the call with 
    pfd = PIXELFORMATDESCRIPTOR()
    <snip value assignments>
    ppfd = PIXELFORMATDESCRIPTORPtr(pfd)

the call that causes problems is
    pixelformat = ChoosePixelFormat(dc, ppfd)
with the following trace

  File "C:\Python22\Lib\site-
packages\Pythonwin\pywin\Demos\openGLDemo.py", line 121, 
in _SetupPixelFormat
    pixelformat = ChoosePixelFormat(dc, ppfd)
TypeError: Type error. Expected 
_p_q_const__PIXELFORMATDESCRIPTOR

How should I be calling the PixelFormat functions?

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