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

		//設置一個顯示字符串的label
		CCLabelTTF * title = CCLabelTTF::create("#128128128","Arial",32);
		title->setPosition(ccp(240,280));
		//設置label的tag為1，方便以后獲取
		this->addChild(title,0,1);

		//這里有一個問題需要注意，在create之前，應該在resource目錄下新建一個文件夾叫做extensions，然后把源代碼中
		//和CCControlColourPicker相關的資源導入進去
		CCControlColourPicker * colorPicker = CCControlColourPicker::create();
		colorPicker->setColor(ccc3(128,128,128));

		//設置一張背景圖片,但是卻不起作用，至今沒解決，有誰解決了，說一聲
		//colorPicker->setBackground(CCSprite::create("HelloWorld.png"));

		//為colorPicker添加事件監(jiān)聽函數
		colorPicker->addTargetWithActionForControlEvents(this,cccontrol_selector(HelloWorld::colorValueChanged),
  		CCControlEventValueChanged);

		//設置位置
		colorPicker->setPosition(ccp(240,160));
		this->addChild(colorPicker);

    bRet = true;
  } while (0);

  return bRet;
}

void HelloWorld::colorValueChanged(CCObject * pSender,CCControlEvent controlEvent)
 {
	CCLabelTTF * title = (CCLabelTTF *)this->getChildByTag(1);
	CCControlColourPicker * pPicker = (CCControlColourPicker *)pSender;
	//這里需要注意了，本人用的cocos2d-x的版本是2.2，應該用pPicker調用getColor函數，但據本人查看他人的
	//博客，他們都是用的getColorValue函數，他們應該是早一點的版本
	title->setString(CCString::createWithFormat("#%03d%03d%03d",pPicker->getColor().r,pPicker->getColor().g,
		pPicker->getColor().b)->getCString());
 }