pyobjc_quartz_core_graphics_list_onscreen_windows.py

1import ApplicationServices
2import Quartz
3
4def list_onscreen_windows():
5    # Use Quartz (part of ApplicationServices) to get a list of window dictionaries
6    # kCGWindowListOptionOnScreenOnly = 1 << 0
7    # kCGNullWindowID = 0
8    window_list = Quartz.CGWindowListCopyWindowInfo(
9        Quartz.kCGWindowListOptionOnScreenOnly, 
10        Quartz.kCGNullWindowID
11    )
12
13    print(f"{'ID':<10} {'Owner':<20} {'Name'}")
14    print("-" * 50)
15
16    for window in window_list:
17        window_id = window.get(Quartz.kCGWindowNumber, "Unknown")
18        owner_name = window.get(Quartz.kCGWindowOwnerName, "Unknown")
19        window_name = window.get(Quartz.kCGWindowName, "N/A")
20        
21        print(f"{window_id:<10} {owner_name:<20} {window_name}")
22
23if __name__ == "__main__":
24    list_onscreen_windows()