[Pythoncard-users] Cleaning up when closing pythoncard applications

[Tim B. <tb...@bi...>]

I just solved a problem I was having with a py2exe windows standalone
whereby the windows process never terminated after closing the app. As
you might suspect, this involved a thread in my app that didn't
terminate gracefully. I found in the PythonCard samples several examples
of using threads and in each case, the thread's daemon flag was set to 1
to make it daemonic so that it is cleaned up when the non-daemonic
thread (my Main GUI thread) exits. This solved my problem. However,
until I found this solution, I was trying another solution. Let's
pretend for a second that thread.setDaemon wouldn't work and we have to
make my secondary thread explicitly "killable" by having its run
function do:

def run(self):
	while self._running:
		# do stuff
		pass

and its stop func do:

def stop(self):
	self._running =3D False

so that my Pythoncard app can call this thread's stop function to
explicitly kill it. But where and when should this be called? I can
handle the reqests to close the app via a file menu exit callback, but
what about for "X"ing the application or other sorts of ungraceful
termination? I see that self.Close() gets called. I guess what I am
asking is what is EVT_CLOSE bound to? Where can I place cleanup
statements like thread stopping, etc?=20

Thanks,
Tim