标签和按钮

#ifndef __HELLOWORLD_SCENE_H__#define __HELLOWORLD_SCENE_H__#include "cocos2d.h"class HelloWorld : public cocos2d::Layer{ public:     // Label * label_;    cocos2d::Label *_label;    // there's no 'id' in cpp, so we recommend returning the class instance pointer    static cocos2d::Scene* createScene();    // Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone    virtual bool init();          // a selector callback    void menuCloseCallback(cocos2d::Ref* pSender);    void HelloWorld::starMenuCallback(cocos2d::Ref* pSender);        // implement the "static create()" method manually    CREATE_FUNC(HelloWorld);};#endif // __HELLOWORLD_SCENE_H__

#include "HelloWorldScene.h"USING_NS_CC;Scene* HelloWorld::createScene(){    // 'scene' is an autorelease object    auto scene = Scene::create();        // 'layer' is an autorelease object    auto 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 instancebool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !Layer::init() )    {        return false;    }    //    Size visibleSize = Director::getInstance()->getVisibleSize();    Vec2 origin = Director::getInstance()->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    auto closeItem = MenuItemImage::create(                                           "CloseNormal.png",                                           "CloseSelected.png",                                            CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));        closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,                                origin.y + closeItem->getContentSize().height/2));    // create menu, it's an autorelease object    auto menu = Menu::create(closeItem, NULL);    menu->setPosition(Vec2::ZERO);    this->addChild(menu, 1);    ////////////////////////////////////    // 3. add your codes below...    // add a label shows "Hello World"    // create and initialize a label        auto label = Label::createWithSystemFont("Hello World", "Arial", 24);        // position the label on the center of the screen    label->setPosition(Vec2(origin.x + visibleSize.width/2,                            origin.y + visibleSize.height - label->getContentSize().height));    // add the label as a child to this layer    this->addChild(label, 1);    // add "HelloWorld" splash screen"    auto sprite = Sprite::create("HelloWorld.png");    // position the sprite on the center of the screen    sprite->setPosition(Vec2(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));    // add the sprite as a child to this layer    this->addChild(sprite, 0);/*Create a label for display purposes*/auto _label = Label::createWithSystemFont("Last button: None", "Marker Felt", 32);_label->setPosition(Vec2(visibleSize.width / 2 + origin.x, origin.y + visibleSize.height - 80));_label->setHorizontalAlignment(TextHAlignment::CENTER);this->addChild(_label);//Standard method to create a buttonauto starMenuItem = MenuItemImage::create("ButtonStar.png","ButtonStarSel.png",CC_CALLBACK_1(HelloWorld::starMenuCallback, this));starMenuItem->setPosition(Point(160, 160));auto starMenu = Menu::create(starMenuItem, NULL);starMenu->setPosition(Point::ZERO);this->addChild(starMenu, 1);auto label1 = Label::createWithSystemFont("Hello World1", "Arial", 36); //①label1->setPosition(Vec2(origin.x + visibleSize.width / 2,origin.y + visibleSize.height - 130));this->addChild(label1, 1);        return true;}void HelloWorld::menuCloseCallback(Ref* pSender){#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");    return;#endif    Director::getInstance()->end();#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)    exit(0);#endif}void HelloWorld::starMenuCallback(cocos2d::Ref* pSender){Vec2 origin = Director::getInstance()->getVisibleOrigin();Size visibleSize = Director::getInstance()->getVisibleSize();//创建一个标签_label = Label::create("BiaoGe", "Arial", 30);_label->setPosition(Vec2(origin.x + visibleSize.width / 2, origin.y + visibleSize.height - 200));_label->retain();//添加到层addChild(_label);}