1 week ago, Qt SDK 4.7.0 was FINALLY released. In this release, QML is enabled. So we can install Qt, QML and QtCreator straightforward.
When I install the Qt SDK of windows version, I DON'T choose MinGW option because GCC of Ruby DevKit is newer than one of this Qt SDK.
So let's launch sample QML application from QtCreator with Qt 4.7.0.