Qt包括多达 250 个以上的 C++ 类，还提供基于模板的 collections， serialization， file， I/O device， directory management， date/time 类。甚至还包括正则表达式的处理 功能。-Qt includes up to more than 250 C++ class also offers collections of templates, the serialization, the file, I/O device, directory management, the date/time class. Even include the regular expression processing functions.