[Bug 28249] opengl program failed in Mac OS X 10.7, dead block at pglXCreateGLXPixmap()

http://bugs.winehq.org/show_bug.cgi?id=28249

--- Comment #4 from drangon  2011-09-16 00:16:20 CDT ---
I make some more test, it shows difference between top level window and sub
window.

A simple dialog base application, there is a sub window in the dialog.

If I use the dialog window handle to create OpenGL context, it works file.
If I use the sub window handle to create OpenGL context, all other code are the
same, it block at the SetPixelFormat() function call.

What's difference between the top level window and the sub window ?