Type Definition fltk::gl::PFNGLREPLACEMENTCODEUITEXCOORD2FCOLOR4FNORMAL3FVERTEX3FVSUNPROC

type PFNGLREPLACEMENTCODEUITEXCOORD2FCOLOR4FNORMAL3FVERTEX3FVSUNPROC = Option<unsafe extern "C" fn(*const u32, *const f32, *const f32, *const f32, *const f32)>;