"""
# How to use
# from pyOpenRPA.Tools import StopSafe
# StopSafe.Init(inLogger=None)
# StopSafe.IsSafeStop() # True - WM_CLOSE SIGNAL has come. taskkill /im someprocess.exe
"""
import win32con
import win32gui
import os
gIsSignalCloseBool = False
gLogger = None
gWindowTitleStr = "PythonTerminator" # Title of the phantom window
gWindowDescriptionStr = "pyOpenRPA library for safe turn off the program (by send the WM_CLOSE signal from task kill)" # Description of the phantom window
[документация]def Init(inLogger=None):
"""
Init the StopSafe module. After that you can use def IsStopSafe() to check if close signal has come.
:param inLogger: Logger to log messages about StopSafe
:return:
"""
global gLogger
global gIsSignalCloseBool
gIsSignalCloseBool = False # Init default
gLogger = inLogger
import threading
if gLogger: gLogger.info(f"StopSafe: Init termination catch thread")
shutdown_thread = threading.Thread(target=_shutdown_monitor)
shutdown_thread.start()
#shutdown_thread.join()
#shutdown_monitor()
[документация]def IsStopSafe():
"""
Check if stop signal has come.
:return:
"""
global gIsSignalCloseBool # Init the global variable
return gIsSignalCloseBool # Return the result
def _shutdown_monitor():
global gIsSignalCloseBool # Init the global variable
global gLogger
def wndproc(hwnd, msg, wparam, lparam):
if msg == win32con.WM_CLOSE:
win32gui.DestroyWindow(hwnd)
return 0
elif msg == win32con.WM_DESTROY:
win32gui.PostQuitMessage(0)
return 0
return win32gui.DefWindowProc(hwnd, msg, wparam, lparam)
wc = win32gui.WNDCLASS()
wc.lpszClassName = gWindowTitleStr
wc.lpfnWndProc = wndproc
win32gui.RegisterClass(wc)
hwnd = win32gui.CreateWindow(gWindowTitleStr, gWindowDescriptionStr,
0, 0, 0, 0, 0, 0, 0, 0, None)
win32gui.PumpMessages()
gIsSignalCloseBool = True # WM_CLOSE message has come
if gLogger:
gLogger.info(f"StopSafe: Program has catch VM_CLOSE signal - do safe exit")