关键词: 可扩展标记语言, XML, QT, 转换, 类, C++, 动态实例, 元类型系统

Abstract: In order to convert XML files into object instances of C++, this paper presents an interconversion method between XML files and C++ objects. The structure of XML file and the metatype system of QT are studied. Starting with the XML root node, each node of XML file is traversed by depth-first reading algorithm. The content and attributes of node are assembled into C++ object instances. The nested relationship among elements of XML file is preserved. The whole XML file can be read according to this relationship, or only the content of the corresponding node can be read as needed. Finally, an example is given to verify the correctness and validity of the method and demonstrate its simplicity and efficiency.

Key words: extensible markup language, XML, QT, conversion, class, C++, dynamic instance, metatype system