cocos2d-x GUI控件的使用（cocos2d-x2.1）

在使用extensions时都需要额外指定include、lib，例如笔者的VS11环境，右键项目 属性-->配置属性-->VC++目录在包含目录中添加F:\cocos2d-2.1beta3-x-2.1.1\extensions;以及在链接器-->命令行添加libextensions.lib或者使用代码添加

#pragma comment(lib, "libextensions.lib")

进入程序中需要将使用到的头文件写入，可以直接写#include “cocos-ext.h”(它包含了extensions的所有头文件引用)，然后添加命名空间声明：USING_NS_CC_EXT;

对于各种GUI控件可以在Samples的TestCpp的ExtensionsTest\ControlExtensionTest查看学习

下面这个代码参考了CCControlSwitchTest

#pragma once

#include "cocos2d.h"
#include "cocos-ext.h"

#pragma comment(lib, "libextensions.lib")

USING_NS_CC_EXT;

class HelpLayer : public cocos2d::CCLayer
{
public:
HelpLayer(void);
~HelpLayer(void);

bool init();
CREATE_FUNC(HelpLayer);

cocos2d::CCLabelTTF *m_valueLabel;
void valueChanged(cocos2d::CCObject *sender, CCControlEvent controlEvent);
};

#include "HelpLayer.h"

using namespace cocos2d;

HelpLayer::HelpLayer(void)
{
m_valueLabel = NULL;
}

HelpLayer::~HelpLayer(void)
{
CC_SAFE_RELEASE(m_valueLabel);
}

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

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

// switch controler
CCControlSwitch *switchControl = CCControlSwitch::create
(
CCSprite::create("extensions/switch-mask.png"),
CCSprite::create("extensions/switch-on.png"),
CCSprite::create("extensions/switch-off.png"),
CCSprite::create("extensions/switch-thumb.png"),
CCLabelTTF::create("on", "Arial-BoldMT", 16),
CCLabelTTF::create("off", "Arial-BoldMT", 16)
);
switchControl->setOn(true);
switchControl->setPosition(ccp(winSize.width / 2 + 50, winSize.height / 2));
this->addChild(switchControl);

switchControl->addTargetWithActionForControlEvents(this, cccontrol_selector(HelpLayer::valueChanged), CCControlEventValueChanged);

// button
CCScale9Sprite *background = CCScale9Sprite::create("extensions/buttonBackground.png");
background->setContentSize(CCSizeMake(80, 50));
background->setPosition(ccp(winSize.width / 2 - 100, winSize.height / 2));
this->addChild(background);

m_valueLabel = CCLabelTTF::create("ON", "Marker Felt", 30);
m_valueLabel->retain();
m_valueLabel->setPosition(background->getPosition());
this->addChild(m_valueLabel);

bRet = true;
} while (0);

return bRet;
}

void HelpLayer::valueChanged(cocos2d::CCObject *sender, CCControlEvent controlEvent)
{
CCControlSwitch *pSwitch = (CCControlSwitch*)sender;
if (pSwitch->isOn())
{
m_valueLabel->setString("ON");
}
else
{
m_valueLabel->setString("OFF");
}
}

程序运行如下：