I think this means the function in QIODevice is a virtual function, and in the AudioInfo this function is rewritten. I found a word, if a function in a class is defined as a virtual function, and the function in subclass become virtual funtion automatic though there is no virtual
nan hongzhen 2010/12/17 Shan Jiang <[email protected]> > In QT project on Linux , Is the declaration of a virtual function in a > subclass available without the keyword of ' virtual ' ? > e.g. > class QIODevice { > ....... > virtual qint64 readData(char *data, qint64 maxlen); > }; > > class AudioInfo : public QIODevice > { > ..... > protected: > qint64 readData(char *data, qint64 maxlen); > }; > The menber function of readData(...) of AudioInfo is *virtual* ? > > > -- > Shan Jiang a.k.a dane @ Bluesky Dev Team XJTU >
