[Qt-interest] QThread: infinite loops

[Nicholas Shatokhin]

I'm trying to use libfprint, but It was written on C and I'm creating a  
layer
between qt4 and libfprint.
Because it need loop to scan finger and I don't want to freeze my program
I used QThread. But my program still frozing.
What's I doing wrong? My source are: http://ubuntuone.com/p/esE/

And I tryed to start thread in mainwindow constructor, but window didn't
showed, so I created button. How start scanning after showing window
without freezing of it?

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