[veeti]

Out of all the cross-platform toolkits Qt is the absolute best. For example, the Windows themes are literally flawless. It also takes into account so many things that other toolkits don't: native (file picker) dialogs, proper button order, paddings, etc.

[infinite8s]

That's because on Windows and OS X, Qt uses the operating system to paint native widgets, and uses the corresponding helper dialogs provided by the system.