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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 timer
- import time
- # Timers are based on Windows messages. So we need
- # to do the event-loop thing!
- import win32event, 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()
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