Hi @eyetrackjack, no problem! We are happy to try and help you out 😀
First thing is to look at the methodology by which you are trying to make a WPF window gaze aware by a creating a secondary virtual window.
In fact, we have already created a simple WPF sample which you can download @ https://github.com/Tobii/CoreSDK
If you checkout the samples directory, we illustrate the most direct means to make a WPF window gaze aware without the need for virtual windows overlayed… I would strongly encourage you to first look at our recommended protocol and thereafter let us know if this is compatible with your project needs? It should hopefully help you get up and running a lot faster!