NSWindow: get the current Space/Desktop of a specific window

Question

Is there a way to get the current Space/Desktop of a specific NSWindow?

for example: myWindow.spaceIndex

Thank you

Answer 1

The problem was: Are two different windows both on the active space?

The NSWindow has a property .isOnActiveSpace , so:

let areOnActiveSpace = firstWindow.isOnActiveSpace && secondWindow.isOnActiveSpace