用C++函数指针封装自定义的Button

自定义Button类：

//
//  CustomButton.h
//  fun_point_button
//
//  Created by Forest on 16/4/28.
//
//

#ifndef __fun_point_button__CustomButton__
#define __fun_point_button__CustomButton__

#include <stdio.h>
#include "cocos2d.h"
USING_NS_CC;

typedef enum {
    STANDARD,
    CHANGE_IMG,
    SHAKE
}ButtonType;

typedef enum {
    Began,
    Moved,
    Ended
}TouchState;

class CustomButton;
typedef void (CCObject::*FUNCTION)(CustomButton*);
#define function_selector(_SEC) (FUNCTION)(&_SEC)

class CustomButton:public CCNode , public CCStandardTouchDelegate {

public:
    // 创建标准button
    static CustomButton* createButton(const char* normalImage,CCObject* target,FUNCTION callBack);
    // 创建换图button
    static CustomButton* createChangeImageButton(const char* normalImage,const char* selectedImage,CCObject* target,FUNCTION callBack);
    // 创建抖动button
    static CustomButton* createShakeButton(const char* normalImage,CCObject* target,FUNCTION callBack);

    CC_SYNTHESIZE(int, m_tag, Tag);
    CC_SYNTHESIZE(std::string, m_name, Name);

    void setButtonType(ButtonType type);

    // 开启按钮
    void startButton();
    // 结束按钮
    void stopButton();
private:
    CustomButton();
    ~CustomButton();
    void onEnter();
    void onExit();
    // 触摸方法
    virtual void ccTouchesBegan(CCSet *pTouches, CCEvent *pEvent) ;
    virtual void ccTouchesMoved(CCSet *pTouches, CCEvent *pEvent) ;
    virtual void ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent) ;

    bool initButton(const char* normalImage,CCObject* target,FUNCTION callBack);
    bool initChangeImageButton(const char* normalImage,const char* selectedImage,CCObject* target,FUNCTION callBack);

    CCSprite* m_normalImage;
    CCSprite* m_selectedImage;
    ButtonType m_type;
    bool m_isInside;
    CCPoint m_beganPoint;

    CCObject* m_target;
    FUNCTION  m_callBack;

    CCTouch* m_touch;

    bool isTouchInside(CCTouch* touch);
    // 执行回调
    void executeEvent();
    // 标准按钮处理
    void standardEvent();
    // 换图按钮处理
    void changeImageEvent(TouchState state);
    // 抖动按钮处理
    void shakeEvent(TouchState state);
};

#endif /* defined(__fun_point_button__CustomButton__) */

//
//  CustomButton.cpp
//  fun_point_button
//
//  Created by Forest on 16/4/28.
//
//

#include "CustomButton.h"

CustomButton::CustomButton(){
}
CustomButton::~CustomButton(){
}

void CustomButton::onEnter(){
    CCNode::onEnter();
}

void CustomButton::onExit(){
    CCNode::onExit();
    this->stopButton();
}

CustomButton* CustomButton::createButton(const char *normalImage, cocos2d::CCObject *target, FUNCTION callBack){
    CustomButton* button = new CustomButton();
    if (button && button->initButton(normalImage, target, callBack)) {
        button->setButtonType(STANDARD);
        button->autorelease();
        return button;
    }
    CC_SAFE_DELETE(button);
    return NULL;
}

bool CustomButton::initButton(const