Hi @pitt, in terms of using The Core SDK in conjunction with OS interactors, you might find a previous forum post useful.
The user had found a way to use the AutohotKey software which is ideal for emulating keyboard presses (and provides a simple interface to common windows commands) to work in tandem with EyeX SDK.
Whilst the EyeX SDK has now since been deprecated and replaced with the Core SDK, I think the code and methodology he shared may still be useful for your needs.
You can checkout the original post @ http://developer.tobii.com/community/forums/topic/accessing-gaze-data-stream-with-autohotkey/
Have a look over and let me know what you think!