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# -*- Mode: Python; tab-width: 4 -*-
#
# This module, and the timer.pyd core timer support, were written by
# Sam Rushing (rushing@nightmare.com)
import time
# Timers are based on Windows messages. So we need
# to do the event-loop thing!
import timer
import win32event
import win32gui
# glork holds a simple counter for us.
class glork:
def __init__(self, delay=1000, max=10):
self.x = 0
self.max = max
self.id = timer.set_timer(delay, self.increment)
# Could use the threading module, but this is
# a win32 extension test after all! :-)
self.event = win32event.CreateEvent(None, 0, 0, None)
def increment(self, id, time):
print("x = %d" % self.x)
self.x = self.x + 1
# if we've reached the max count,
# kill off the timer.
if self.x > self.max:
# we could have used 'self.id' here, too
timer.kill_timer(id)
win32event.SetEvent(self.event)
# create a counter that will count from '1' thru '10', incrementing
# once a second, and then stop.
def demo(delay=1000, stop=10):
g = glork(delay, stop)
# Timers are message based - so we need
# To run a message loop while waiting for our timers
# to expire.
start_time = time.time()
while 1:
# We can't simply give a timeout of 30 seconds, as
# we may continouusly be recieving other input messages,
# and therefore never expire.
rc = win32event.MsgWaitForMultipleObjects(
(g.event,), # list of objects
0, # wait all
500, # timeout
win32event.QS_ALLEVENTS, # type of input
)
if rc == win32event.WAIT_OBJECT_0:
# Event signalled.
break
elif rc == win32event.WAIT_OBJECT_0 + 1:
# Message waiting.
if win32gui.PumpWaitingMessages():
raise RuntimeError("We got an unexpected WM_QUIT message!")
else:
# This wait timed-out.
if time.time() - start_time > 30:
raise RuntimeError("We timed out waiting for the timers to expire!")
if __name__ == "__main__":
demo()