QT4与QT3在编程上有着很大的差别。尤其是用designer生成源码的时候差异性更大，本文介绍了在QT4下面如何使用designer生成源码，然后将自己的程序加入其中。适合想从QT3过度到QT4的初学者。-QT4 programming with Qt3 share in the great difference. Particularly the designer to generate source code, when a greater difference, in QT4 This