Simon John wrote:
"As for the Qt (not KDE) dual-licensing, it has for years been a bad bit of P.R. for Trolltech, until they finally gave in and released a GPL version of Qt4 for Windows last year, although it's still a bit cut-down (no XP styles, doesn't compile under VisualStudio etc.)"
Yes, you have to have a commercial license to get the Visual Studio Integration features:
I don't use Windows XP, so I'm surprised to hear you say that about the Windows XP style. I'd be interested to hear about your experiences with the open source version on Windows, but you should probably contact me privately rather than follow up here.