再转载一篇关于QT安装和在Code Blocks中使用的文章，含有详细的步骤。关于QT的介绍：
Qt is a cross-platform application and UI framework. Using Qt, you can write applications once and deploy them across many desktop and embedded operating systems without rewriting the source code. Develop applications and user interfaces once, and deploy them across Windows, Mac, Linux/X11, embedded Linux, Windows CE and S60 (coming soon) without rewriting the source code. - qtsoftware.com