Type Definition fltk::gl::PFNGLREPLACEMENTCODEUICOLOR4FNORMAL3FVERTEX3FSUNPROC

type PFNGLREPLACEMENTCODEUICOLOR4FNORMAL3FVERTEX3FSUNPROC = Option<unsafe extern "C" fn(u32, f32, f32, f32, f32, f32, f32, f32, f32, f32, f32)>;