[PyQt] Problem with QValidator

[Björn Häuser]

Hello List!

I have a Problem with my own QValidator. Just tried to write one which 
checks the length of a input field.

Traceback (most recent call last):
   File "window.py", line 97, in <module>
     window = Window(config)
   File "window.py", line 26, in __init__
     self.ui.username.setValidator(vsl)
RuntimeError: underlying C/C++ object has been deleted


This is the error i get when trying to use it.

         vsl = validStringLength(2, 8, self)
         self.ui.username.setValidator(vsl)

This the basic code for using the validator.

http://pastie.org/503567 - this is the rest of this file.
http://pastie.org/503568 - this is the validator file.

Any help appreciated (and any suggestions, especially regarding code 
quality).

Thanks in advance,
Björn