How can I render with OpenGL in a MFC-Window? Can I also render in a dialog item as a textbox or something like this...

Microsoft has some good technical articles about using opengl with MFC. Do a search at www.microsoft.com
Just search for something like "opengl", "opengl, mfc", "opengl with mfc"

ECKILLER

Microsoft Systems Journal November 1996 Vol 11 No 11 has an article on something along these lines. It may be a little dated. I happen to have the paper copy sitting in front of me, but I know that an MSDN CD should probably have this on there.

Hope that helps

Try www.opengl.org and search for MFC there
I think that''s where I got the examples I used to make my first MFC & OpenGL app

It''s not that hard to get setup, but I had no idea what was actually happening (at the time & now )

I have a broken vc5 projec that has the code in it (it doesn''t compile as is, and I have no interest in ressurecting it - but I''ll send you it if you want to look at it)