In Python 3, how can I tell if Windows is locked?

Question

How can I check whether a Windows OS workstation is locked? (e.g. Win+L or choosing the lock option after Ctrl+Alt+Del.)

I want something like ctypes.windll.user32.isWorkstationLocked().

Answer 1

This code worked today for me on four different Windows 7 and 10 machines, try something similar:

import ctypes
import time
user32 = ctypes.windll.User32
time.sleep(5)
#
#print(user32.GetForegroundWindow())
#
if (user32.GetForegroundWindow() % 10 == 0): print('Locked')
# 10553666 - return code for unlocked workstation1
# 0 - return code for locked workstation1
#
# 132782 - return code for unlocked workstation2
# 67370 -  return code for locked workstation2
#
# 3216806 - return code for unlocked workstation3
# 1901390 - return code for locked workstation3
#
# 197944 - return code for unlocked workstation4
# 0 -  return code for locked workstation4
#
else: print('Unlocked')

Edit: Also, this one works today:

import subprocess
import time
time.sleep(5)
process_name='LogonUI.exe'
callall='TASKLIST'
outputall=subprocess.check_output(callall)
outputstringall=str(outputall)
if process_name in outputstringall:
    print("Locked.")
else: 
    print("Unlocked.")