Implementing IBindStatusCallback

[José Roca]

It is not inside the thread function, but it belonsg to that thread, since you're creating the class in it.

> The question of how to get data in and out of the class arises because the callback is a COM class and is therefore its interface is fixed.

You can add your own methods AFTER the last one, and use instance variables, but you can only call them from the thread that has created it, not from the main thread.