[Qt-interest] protected function

[vyshakh krishnan]

hi,

Can anyone tell the exact working of protected function in a qt class.

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
    void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);

These functions are seen to be made protected in one of the tutorial program
(diagramscene) in qt. But these are not called anywhere or not connected to
any signal. How do these work?

Regards
vyshakh krishnan
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