bool HelloWorld::init()
{
  bool bRet = false;
  do
  {

  //ccc4这个宏的参数分别为R,G,B,A最后一个是透明度，设置成255就是不透明的，设置成0是透明的
  CC_BREAK_IF(!CCLayerColor::initWithColor(ccc4(128,128,128,255)));

  CCSize size = CCDirector::sharedDirector()->getWinSize();

    CCSprite * sprite = CCSprite::create("image1.png");
  sprite->setPosition(ccp(100,100));
  this->addChild(sprite);

  //新建一个colorlayer
  ccColor4B color = ccc4(200,200,0,255);
  CCLayerColor * layer = CCLayerColor::create(color);

  //设置layer层的大小
  layer->setContentSize(CCSizeMake(200,200));

  //这一步使layer层的锚点为(0.5,0.5)，若不怎么设置，默认锚点在(0,0)处
  layer->ignoreAnchorPointForPosition(false);

  layer->setPosition(ccp(size.width/2,size.height/2));
  this->addChild(layer);

    bRet = true;
  } while (0);

  return bRet;
}