'glBlendColor': identifier not found

Please, tell me why? I think it without OpenGL version 1. I read red book “OpenGL Programmin Guide e7th”, … :sorrow: OpenGL version 3.0, 3.1
I don’t find GLUT, GL, GLUT 3.0…
:doh: sorry I’m Asian

:sorrow: nobody help me!!!

You have not shown us what you are trying to do, nor have you shown us any errors or code. A quick search of the OpenGL forum will find other posts that are similar, have you tried those yet?

ThanK webmaster, I will try