wxPython and threading issue

[Patrick Smith]

Hi,
I'm hoping someone here will be able to help as I've been struggling with
this problem for a few days now.

I'm working on an application that is creating a ProgressDialog, and then
creating a thread that runs a function from another module in the program.

The problem is, when the cancel button on the ProgressDialog is pressed, the
thread that was created continues to run.  How can I make it so that when
the cancel button on the dialog is clicked, the spawned thread dies?

thanks