Hi,

I am trying to trigger an event every time a registry value is being modified.

import win32api

import win32event

import win32con

import _winreg

key = _winreg.OpenKey(_winreg.HKEY_CURRENT_USER,'Control Panel\Desktop',0,_winreg.KEY_READ)

sub_key = _winreg.CreateKey(key,'Wallpaper')

evt = win32event.CreateEvent(None,0,0,None)

win32api.RegNotifyChangeKeyValue(sub_key,1,win32api.REG_NOTIFY_CHANGE_ATTRIBUTES,evt,True)

ret_code=win32event.WaitForSingleObject(evt,3000)

if ret_code == win32con.WAIT_OBJECT_0:

print "CHANGED"

if ret_code == win32con.WAIT_TIMEOUT:

print "TIMED"

my problem is that this is never triggered , the event always time-out. (the reg key I am trying to follow is the wallpaper)

[ please note I trigger the event by 1) manually changing the registry value in regedit 2) an automated script which run this :

from ctypes import windll

from win32con import *

windll.user32.SystemParametersInfoA(SPI_SETDESKWALLPAPER, 0,"C:\wall.jpg",SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE)

]

Thanks for any help in advance :)

EDIT:: sorry about formatting