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14/11/2014 at 16:21 #2015
take a look at the MinimalStatusNotifications sample in the C/C++ SDK, it should be a good starting point.
What you want to do, in the EyeX lingo, is to register a state-changed handler for the TX_STATEPATH_EYETRACKINGSTATE engine state. You don’t have to create any interactors in this case.