MinGW and Open GL Ortho vs Frustum

This example builds upon the first example.

OrthoVsFrustum.rc: The constant 0x56000000 equals WS_CHILDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_VISIBLE
The classname in the "Custom Control" must be the same as in RegisterClass ("openGLWindowClass")

See also List of examples.