I am experimenting using the GtkGLArea widget for rendering in a combination 3D model viewer and shader editor. I noticed that the only core version of OpenGL supported by the widget is 3.2 and I would like to use my tool to experiment with newer GL versions.

This problem could be fixed by adding enum values for the other currently available GL versions, 3.3, and 4.0-4.4. These GL versions may not be widely supported yet but that is likely to change with time. If the API is unchanged however the choice of GL version will become linked with the toolkit version which seems like an unnecessary burden. Instead an enum perhaps the GL version could be specified with major/minor version integers.