## Demonstrates how to create a "pull" subscription
import win32evtlog, win32event, win32con
query_text='*[System[Provider[@Name="Microsoft-Windows-Winlogon"]]]'

h=win32event.CreateEvent(None, 0, 0, None)
s=win32evtlog.EvtSubscribe('System', win32evtlog.EvtSubscribeStartAtOldestRecord, SignalEvent=h, Query=query_text)

while 1:
	while 1:
		events=win32evtlog.EvtNext(s, 10)
		if len(events)==0:
			break
		##for event in events:
		##	print (win32evtlog.EvtRender(event, win32evtlog.EvtRenderEventXml))
		print(('retrieved %s events' %len(events)))
	while 1:
		print ('waiting...')
		w=win32event.WaitForSingleObjectEx(h, 2000, True)
		if w==win32con.WAIT_OBJECT_0:
			break

