| Gdk::GL::Config | OpenGL frame buffer configuration |
| Gdk::GL::Context | OpenGL rendering context |
| Gdk::GL::Drawable | OpenGL rendering surface abstract class |
| Gtk::GL::DrawingArea | OpenGL-capable DrawingArea widget |
| Gdk::GL::Font | Font rendering support stuff |
| Gdk::GL::Pixmap | OpenGL pixmap which is maintained offscreen |
| Gtk::GL::Widget | OpenGL extension API to Gtk::Widget |
| Gdk::GL::Window | OpenGL window which is located onscreen |
1.3