cocos2d,设置了一个图片按钮，点击后按钮后回调函数执行了两次是怎么回事呢？

Question

按钮如下：
MenuItemImage* pauseItem = MenuItemImage::create(
"pause_n.png",
"pause_s.png",
CC_CALLBACK_0(GameMain::pause, this));

pauseItem->setPosition(Point(300, 460));
Menu* menu = Menu::create(pauseItem, NULL);
menu->setPosition(Point::ZERO);
this->addChild(menu);

回调函数如下（在函数里写了CCLOG（），发现1,2出现了两次）：
void GameMain::pause()

{
CCLOG("1");
Size visibleSize = Director::sharedDirector()->getVisibleSize();
RenderTexture* renderTexture = RenderTexture::create(visibleSize.width, visibleSize.height);
renderTexture->begin();
this->getParent()->visit();
renderTexture->end();
Director::getInstance()->pushScene(GamePause::scene(renderTexture));
CCLOG("2");
}

Answer 1

http://blog.csdn.net/hjjxiaoxiaobai/article/details/40681431