Well it depends. Qt is GPL'd and as long as you keep your code open source you can use it commercially without any restrictions, so if the company would have no problem with making the code opensource he could use the windows opensource version. I believe MySQL has a similar license, which would require proprietary commercial software to have purchased a license..Originally Posted by Ancient Dragon
So I would say that if Qt cannot be used freely here, then MySQL also cannot.. If your gonna have to buy one, might as well buy both eh? or opensource it, which would be the best move, IMO..