cocos2dx大神為什么我繼承,public EditBoxDelegate報錯#include "ui\UIScale9Sprite.h"#include "ui\CocosGUI.h"#include "extensions/cocos-ext.h"USING_NS_CC;using namespace ui;class EnrollScene :public cocos2d::Layer,public EditBoxDelegate{public:virtual bool init();CREATE_FUNC(EnrollScene);上面是部分代碼，一繼承EditBoxDelegate，，CREATE_FUNC(EnrollScene);就報錯，說什么錯誤：不允許使用抽象類類型的“EnrollScene”的對象，純虛擬函數“cocos2d::ui::EditBoxDelegate::editBoxRetuen”沒有強制替代項