cocos2dx CCControlButton用法

    CCScale9Sprite *backgroundButton = CCScale9Sprite::create(btnImg, imgRect, imgRectInsets);
    CCScale9Sprite *backgroundHighlightedButton = CCScale9Sprite::create(hightLightBtnImg, imgRect, imgRectInsets);
    m_button = CCControlButton::create(backgroundButton);
    m_button->setZoomOnTouchDown(false); //设置不现实按钮效果
    m_button->setBackgroundSpriteForState(backgroundHighlightedButton, CCControlStateHighlighted);
    m_button->setPreferredSize(CCSizeMake(size.height, size.height));
    //m_button->setContentSize(CCSizeMake(size.height, size.height));
    m_button->setPosition(m_label->getContentSize().width + m_button->getContentSize().width/2, m_button->getContentSize().height/2);
    addChild(m_button, 1);

需要注意的是注释的

m_button->setContentSize(CCSizeMake(size.height, size.height));

这句，调整CCControlButton的大小不能用setContentSize, 只能setPreferredSize函数， 否则会导致显示不正确.