Hi @james0323 and thanks for your query. I am not sure if many other clients have tried integrating the Tobii Core SDK with the LabView as this SDK is principally intended for interaction use rather than analysis.
Indeed, you need to be aware that any use of the Core SDK for analytical use as would be implied if you are using together with LabView does require the purchase of a special analytical use licence. You can read more about this @ https://analyticaluse.tobii.com/
That being said, it would seem that you would need to integrate Tobii Functionality into LabView’s own SDK to achieve the results you are after which seems to be C++.. in which case you could look at the Tobii Stream Engine API.
Also, it may be an idea to reach to the Tobii Pro Support @ http://www.tobiipro.com/contact/contact-support/ as they probably have experience in working with the LabView software in conjunction with Tobii Trackers. They have their own SDK but perhaps their advice may be useful in your case also.