在test项目中的ControlExtensionText\ CCControlSwitchTest目录下面的CCControlSwitchTest.cpp中，通过这个例子，我们也可以制作出不错的开关效果，以下是我尝试的代码：

首先声明文件：

#ifndef __loading__LoadingScene__

#define __loading__LoadingScene__

#include <iostream>

#include "cocos2d.h"

#include "cocos-ext.h"

USING_NS_CC_EXT;

class LoadingScene :public CCControlSwitch   //注意继承的类

{

public:

    bool init();

    CREATE_FUNC(LoadingScene);

    static cocos2d::CCScene *scene();

    void valueChanged(CCObject* sender, CCControlEvent controlEvent);

    cocos2d::CCLabelTTF *ttf;

};

#endif /* defined(__loading__LoadingScene__) */

类的实现文件：

#include "LoadingScene.h"

#include "cocos-ext.h"

USING_NS_CC_EXT;

USING_NS_CC;

bool LoadingScene::init()

{

    if (!CCControlSwitch::init())     //原示例中为CCControlScene::init()，但我写后一直不识别，不知道什么原因，估计是我继承的类不同吧

    {

        return false;

    }

    CCSprite *bg=CCSprite::create("fullbg.png");

    this->addChild(bg);

    CCSize size=CCDirector::sharedDirector()->getWinSize();

    CCControlSwitch *switch1=CCControlSwitch::create(

        CCSprite::create("switch-mask.png"),             //背景图片

        CCSprite::create("switch-on.png"),               //开状态背景图片

        CCSprite::create("switch-off.png"),              //关状态背景图片

        CCSprite::create("switch-thumb.png"),            //开关背景图片

        CCLabelTTF::create("On", "Arial-BoldMT", 16),    //开文字标签

        CCLabelTTF::create("Off", "Arial-BoldMT", 16)    //关文字标签

    );

    this->addChild(switch1,1);

    this->setPosition(ccp(size.width/2, size.height/2));                       //添加动作事件

    switch1->addTargetWithActionForControlEvents(this, cccontrol_selector(LoadingScene::valueChanged), CCControlEventValueChanged);

    CCScale9Sprite *sp=CCScale9Sprite::create("buttonBackground.png");     //添加九妹图片

    sp->setContentSize(CCSizeMake(200, 300));                               //设置九妹图片大小

    this->addChild(sp,1);

    sp->setAnchorPoint(ccp(1,1.3));

    sp->setPosition(ccp(size.width/3, size.height/3));

    ttf=CCLabelTTF::create("On", "Arial-BoldMT", 22);

    ttf->setPosition(ccp(sp->getContentSize().width/2, sp->getContentSize().height/2));

    sp->addChild(ttf,1);                                                       //在九妹图片上添加文字标签

    return true;

}

CCScene *LoadingScene::scene()

{

    CCScene *scene=CCScene::create();

    LoadingScene *layer=LoadingScene::create();

    scene->addChild(layer);

    return scene;

}

void LoadingScene::valueChanged(CCObject* sender, CCControlEvent controlEvent)

{

    CCControlSwitch* pSwitch = (CCControlSwitch*)sender;

    if (pSwitch->isOn())                  //判断标签是否是on状态

    {

        ttf->setString("On");

    }

    else

    {

        ttf->setString("Off");

    }

}

最后，实现的效果如下：