This project's goal is making a rich, modern, and pure (not X11 dependent) OpenGL implementation of controls for 2D applications and HUDs for 3D games. Supporting the OpenTK project (C# + OpenGL).
If we should keep actions/logic and UI separate, should we not also keep control appearance and UI (In/Out) separate? For example a "Button" is only a container, that has content, with some sort of border of a particular geometric shape (as are many controls), the only logic in a button is it that it responds to certain user events. ...