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解释：

bool CCMenu::initWithArray(CCArray* pArrayOfItems){    if (CCLayer::init())    {        // menu in the center of the screen        CCSize s = CCDirector::sharedDirector()->getWinSize();        this->ignoreAnchorPointForPosition(true);        setAnchorPoint(ccp(0.5f, 0.5f));        this->setContentSize(s);        setPosition(ccp(s.width/2, s.height/2));                return true;    }    return false;}