写一个判断单点触摸某图片区域的例子。

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"
using namespace cocos2d;
class HelloWorld : public cocos2d::CCLayer
{
public:
// Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone
virtual bool init();

// there's no 'id' in cpp, so we recommend returning the class instance pointer
static cocos2d::CCScene* scene();

// a selector callback
void menuCloseCallback(CCObject* pSender);

// implement the "static node()" method manually
CREATE_FUNC(HelloWorld);

virtual void onEnter();
virtual void onExit();
virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);
CCRect pobject;
};

#endif // __HELLOWORLD_SCENE_H__

#include "HelloWorldScene.h"

USING_NS_CC;

CCScene* HelloWorld::scene()
{
// 'scene' is an autorelease object
CCScene *scene = CCScene::create();

// 'layer' is an autorelease object
HelloWorld *layer = HelloWorld::create();

// add layer as a child to scene
scene->addChild(layer);

// return the scene
return scene;
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !CCLayer::init() )
{
return false;
}

CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();
CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();

/////////////////////////////
// 2. add a menu item with "X" image, which is clicked to quit the program
//    you may modify it.

// add a "close" icon to exit the progress. it's an autorelease object
CCMenuItemImage *pCloseItem = CCMenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
this,
menu_selector(HelloWorld::menuCloseCallback));

pCloseItem->setPosition(ccp(origin.x + visibleSize.width - pCloseItem->getContentSize().width/2 ,
origin.y + pCloseItem->getContentSize().height/2));

// create menu, it's an autorelease object
CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
pMenu->setPosition(CCPointZero);
this->addChild(pMenu, 1);

CCSprite *pSprite = CCSprite::create("Icon-72.png");

pSprite->setPosition(ccp(visibleSize.width/2,visibleSize.height/2));

this->addChild(pSprite,0);
pobject = pSprite->boundingBox();

/////////////////////////////
// 3. add your codes below...

// add a label shows "Hello World"
// create and initialize a label
/*

CCLabelTTF* pLabel = CCLabelTTF::create("Hello World", "Arial", 24);

// position the label on the center of the screen
pLabel->setPosition(ccp(origin.x + visibleSize.width/2,
origin.y + visibleSize.height - pLabel->getContentSize().height));

// add the label as a child to this layer
this->addChild(pLabel, 1);

// add "HelloWorld" splash screen"
CCSprite* pSprite = CCSprite::create("HelloWorld.png");

// position the sprite on the center of the screen
pSprite->setPosition(ccp(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));

// add the sprite as a child to this layer
this->addChild(pSprite, 0);
*/

return true;
}

void HelloWorld::menuCloseCallback(CCObject* pSender)
{
CCDirector::sharedDirector()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
exit(0);
#endif
}

void HelloWorld::onEnter()
{
CCLayer::onEnter();
this->setTouchEnabled(true);
CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this,0,true);
}

void HelloWorld::onExit()
{
CCLayer::onExit();
CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);
}

bool HelloWorld::ccTouchBegan(CCTouch *pTouch, CCEvent* pEvent)
{
CCPoint touchlocation = pTouch->getLocation();
CCPoint location = convertToNodeSpace(touchlocation);
CCLog("location is x=%f y=%f",location.x,location.y);

//CCRect rect = CCRectMake(0,0,200,200);
//bool flag = rect.containsPoint(location);
bool flag = pobject.containsPoint(location);
if (flag)
CCLog("Hit the area");
else
CCLog("miss the area");

return false;
}