Ujjaval Suthar wrote:
Hi all,
I have a COM control which fires a status event called
ProcessingDataAvailable(). The COM control has a method call AddData()
with some data parameters.
Using python, in a simple program, I can instantiate COM object via
Dispatch and call AddData() method successfully.
Now, I want to have a thread which keeps running and listening for
ProcessingDataAvailable() event and do some processing in my program.
Can somebody please give me a simple example code that shows how it can
be done? I'm very new to this kind of programming.
Well here's a crude example to get you going. It uses the
MSAgent thingy which I imagine is installed (if little used)
on most Windows machines. Notice that it's launching a thread
to pick up events from a Queue -- the standard Python structure
for communicating between threads.
<code>
import win32com.client
import pythoncom
import Queue
import threading
import time
events = Queue.Queue ()
def do_things_with_events (events):
while True:
event = events.get ()
open ("c:/temp/events.log", "a").write (str (event) + "\n")
class AgentEvents:
def OnHide (self, character_id, cause):
events.put (("hide", character_id, cause))
#
# Agent.Control.1 - Win2K characters
# Agent.Control.2 - Office2K characters
#
agent = win32com.client.DispatchWithEvents ("Agent.Control.2", AgentEvents)
agent.Connected = True
def start (name, filename=None, show_immediately=True):
filename = filename or ("%s.acs" % name)
agent.Characters.Load (name, filename)
this_agent = agent.Characters (name)
this_agent.Show ()
if __name__ == '__main__':
import time
threading.Thread (target=do_things_with_events, args=(events,)).start ()
start ("merlin")
while True:
pythoncom.PumpWaitingMessages ()
time.sleep (0.1)
</code>
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