My questions is quite simple:
is it possible to determine - in my own app - whether or not there is an MS 
Teams video call taking place at the moment?

So far, i have been checking whether or not MS Teams is running by the 
following snippet (omitting some of the safety guards):

let mainScreen = NSScreen.main
let options : CGWindowListOption = [.excludeDesktopElements , 
.optionOnScreenOnly ]
let winArray = CGWindowListCopyWindowInfo(options, kCGNullWindowID) as? [[ 
String : Any]]           
let win_name : String = winInfo[kCGWindowName as String] as? String
                                    ?? winInfo[kCGWindowOwnerName as String] 
as? String
                                    ?? "???"
if ( win_name == "Microsoft Teams" ) 
    increment counter for that VC Tool

This works pretty well for other kinds of VC tools, such as Zoom and Webex.

But with MS Teams, it does not quite work.

With other VC tools, there is usually two windows, the second one being created 
only when an actual video call is occurring at the moment.
Not so with MS Teams. It always has only one window.

The problem is that even if a video call is going on, the window's name is only 
"Microsoft Teams".

So, I was wondering if there is any other method how I could detect whether or 
not a video call in MS Teams is taking place.


Best regards, Gabriel

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