Get non sketch active focused window size and position possible?

Processing Coding Questions
1

Hi. I’m super new to processing 3. is it possible to find the the size and position of an active window. by that I mean whatever window is currently the main focused and active window ? just need to know if its possible to do it before I try to learn how.

Thanks in advance

Matthew

2

Do you mean from all currently open windows, not only your Sketch window?

OS=windows 10?

3

Yeah from all currently open windows. are you asking me my operating system ? windows 10 yeah. but id like to be able to find a solution for both mac and pc.