How to develop nice-looking, visually modern applications in QT?

I'm wondering how to develop visually modern, with attractive GUI applications in QT. When I run QT Creator and start new project, the GUI looks very basic and "pure", just like simple win32 apps. But look for example at Allegorithmic Substance Designer 2, where GUI looks somehow similar to WPF. There 开发者_如何转开发are many other applications with nice-looking GUI. So, the question is: how to do this? Is there any extension/library to QT, which provide richer GUI experience? Or it must be developed from scratch? Thanks for replies in advance.

As well as Nano's answer, I think it would be worth your while to search around for any Qt stylesheets others have made.

For example, this one that mimics Microsoft Office.

Unfortunately, there doesn't seem to be very many of them available.

I found these useful links, some of whose links may give some ideas:

• Qt Stylesheet Snippet Repository

Another idea might be to search for example qml files in Google Code Search. This search for .qml files has plenty of hits. Before using any of them, you would obviously need to check its license.

Have you tried Nokia's Qt Creator? If you're looking for something "similar" to WPF I assume you're referring to its declarative nature, QML being XAML's counterpart in such regard.