Python: reading plasmoid configuration with KConfig XT

[Peter Hartmann]

Hello

As I'm writing my first plasmoid, I learned that configuration interface 
can be created in a "declarative" way with KConfig XT and Qt Designer. 
But how do I actually _read_ user input with this approach? Of course I 
can write custom slots and hook them up to my QWidget (loaded from .ui 
file) but there seems to be other way which I just can't grasp from 
existing documentation for C++. Thanks for any help.

Best regards,
Peter