Button * button = Button::create("cocosui/animationbuttonnormal.png");//新建按钮
Button* button = Button::create("cocosui/button.png", "cocosui/buttonHighlighted.png"); //新建按钮
button->addTouchEventListener(CC_CALLBACK_2(UIButtonTest::touchEvent, this));//设置按钮的触摸事件和作用目标（继承自Widget）
button->setZoomScale(0.4f);
//3.3新增函数，按钮点击后会变大为原来的系数1+这里的系数0.4，
//可搭配Slider配合使用，slider->getPercent()
//float zoomScale = percent * 0.01;
//btn->setZoomScale(zoomScale);
button->setPressedActionEnabled(true); //设置按钮是否启用点击缩放的效果
button->setOpacity(100); //继承自node，设置node透明度，0完全透明，100完全不透明
button->loadTextureNormal("cocosui/animationbuttonnormal.png");//加载正常情况下的填充图
btn->loadTexturePressed("cocosui/animationbuttonpressed.png");//加载按下按钮情况下的填充图
button->setScale9Enabled(true); //是否启用九宫格显示模式
button->setContentSize(Size(150, 70)); //设置按钮的大小（继承自Node）
button->setPosition(Vec2(widgetSize.width / 2.0f, widgetSize.height / 2.0f));//设置按钮的位置（继承自Node）
button->runAction(Sequence::create(FadeIn::create(0.5),DelayTime::create(1.0),FadeOut::create(0.5), nullptr));//执行一个动作或动作序列（继承自Node）
Touch事件处理函数的四种Touch状态：
Widget::TouchEventType::ENDED:
Widget::TouchEventType::CANCELED:
Widget::TouchEventType::MOVED:
Widget::TouchEventType::BEGAN:
button2->setName("normal"); //设置名字
button->setColor(Color3B::GREEN); //设置按钮的颜色
button2->setPosition(button->getPosition() + Vec2(100,0));//（设置位置参数可以这样使用相加）
btn2->setAnchorPoint(Vec2(0,0.5)); //设置锚点
button->setTitleText("Title Button!"); //设置按钮的标题
button->setTitleColor(Color3B::YELLOW); //标题颜色
button->setFlippedX(true); //设置按钮在X方向上翻转
auto label = button->getTitleRenderer(); //按钮的标题渲染器是一个label
button->runAction(RepeatForever::create(Sequence::create(ScaleTo::create(1.0f, 1.2f),
ScaleTo::create(1.0f, 1.0f),nullptr)));//按钮一直重复膨胀1.2倍和回复原状的动作
{ //点击删除自己
Layout *layout = Layout::create();
layout->setContentSize(widgetSize * 0.6f);
layout->setBackGroundColor(Color3B::GREEN);
layout->setBackGroundColorType(Layout::BackGroundColorType::SOLID);
layout->setBackGroundColorOpacity(100);
layout->setPosition(Size(widgetSize.width/2, widgetSize.height/2));
layout->setAnchorPoint(Vec2::ANCHOR_MIDDLE);
layout->setTag(12);
_uiLayer->addChild(layout);
Button* button = Button::create("cocosui/animationbuttonnormal.png",
"cocosui/animationbuttonpressed.png");
button->setPosition(Vec2(layout->getContentSize().width / 2.0f, layout->getContentSize().height / 2.0f));
// button->addTouchEventListener(this, toucheventselector(UIButtonTest::touchEvent));
button->addTouchEventListener(CC_CALLBACK_2(UIButtonTestRemoveSelf::touchEvent, this));
layout->addChild(button);
auto layout = _uiLayer->getChildByTag(12);
layout->removeFromParentAndCleanup(true); //删除自己删除自己，注意按钮是放在Layout中
}
button->ignoreContentAdaptWithSize(false); //继承自Widget，设置参数为true，setContentSize失效，大小等于函数getVirtualRendererSize的返回值
{//设置按钮标题的效果
Label *title = button->getTitleRenderer();
title->enableShadow(Color4B::BLACK,Size(2,-2)); //阴影
title2->enableOutline(Color4B::GREEN, 3);//It only works on IOS and Android when you use System fonts
}
button2->setNormalizedPosition(Vec2(0.8f, 0.5f));//等价
void setNormalizedPosition(Vec2 pos) {
Size s = getParent()->getContentSize();
_position = pos * s;
}