C++ override

Cocos2d-x
#1

virtual bool ccTouchBegan(cocos2d::CCTouch *pTouch, cocos2d::CCEvent *pEvent) override;
为什么提示错误？
错误：Decaration of ‘ccTouchBegan’ overrides a ‘final’ function

#2

父类函数有 final 修饰吧