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void ImageLayer::ccTouchesMoved(CCSet *pTouches, CCEvent *pEvent) { CCLog(“ccTouchesMoved”);
CCTouch* touch=(CCTouch*)pTouches->anyObject();
CCSprite* sprite=(CCSprite*)this->getChildByTag(1);

CCPoint imagePostion=sprite->getPosition();

CCPoint ccp1=touch->getLocation();
CCPoint ccp2=touch->getPreviousLocation();

imagePostion.x=imagePostion.x+ccp1.x-ccp2.x;
imagePostion.y=imagePostion.y+ccp1.y-ccp2.y;

sprite->setPosition(imagePostion);
}

cocos2dx中只能判断单击，所以双击，实际上是验证两次点击时间小于300ms

static long lastClickTime=0;

long now=millisecondNow();
if(now-lastClickTime<300){
doubleClick();
}

lastClickTime=now;

// 以下函数用来获得毫秒值。

long ImageLayer::millisecondNow()
{
struct cc_timeval now;
CCTime::gettimeofdayCocos2d(&now, NULL);
return (now.tv_sec * 1000 + now.tv_usec / 1000);
}