Tool for creating a GUI

I want to create screens with buttons and pictures for a system and want an easy to use click, drag and drop tool for constructing a GUI. But using opengl.

Originally posted by Zico1978:
I want to create screens with buttons and pictures for a system and want an easy to use click, drag and drop tool for constructing a GUI. But using opengl.
You could construct a little OpenGL GUI lib using Amanith framework ( http://www.amanith.org )