But how about this very primitive idea? :
Create hundreds of wallet on my windows 8 Qt (I don't trust any hosting company.. I have a bad experience)
Match them with users(every user has one of this wallets) .
getbalance from his wallet->save database deposits/wins/loses
...
May be I'm missing something.
Your not missing anything apart from how you would store that sensitive data. There is of course the possibility of running out of addresses, I guess it comes down to how many you generate...
Hundreds maybe thousands of wallet.
Anyway, thanks for your kindly replies @tutkarz @coreli.
I'm going to start project.
Thanks a lot again.