import Cocoa
let px = Double(CommandLine.arguments[1])!, py = Double(CommandLine.arguments[2])!
if let wins = CGWindowListCopyWindowInfo([.optionAll], kCGNullWindowID) as? [[String: Any]] {
    for w in wins {
        let name = w[kCGWindowOwnerName as String] as? String ?? "?"
        let title = w[kCGWindowName as String] as? String ?? ""
        let layer = w[kCGWindowLayer as String] as? Int ?? -1
        let pid = w[kCGWindowOwnerPID as String] as? Int ?? -1
        var b = CGRect.null
        if let d = w[kCGWindowBounds as String] as? [String: Any] {
            b = CGRect(x: d["X"] as! Double, y: d["Y"] as! Double, width: d["Width"] as! Double, height: d["Height"] as! Double)
        }
        let onTop = w[kCGWindowIsOnscreen as String] as? Bool ?? false
        let contains = b.contains(CGPoint(x: px, y: py))
        print("layer=\(layer) onScreen=\(onTop) pid=\(pid) owner=\(name) title=\(title) bounds=\(b) containsPoint=\(contains)")
    }
}