cocos2d-x 类似进度条的控件使用

1.CCControlPotentiometer音量按钮

（a）.init()函数下添加

SimpleAudioEngine::sharedEngine()->playBackgroundMusic("BGM05.mp3");

CCControlPotentiometer* potentionmeter = CCControlPotentiometer::create("potentiometerTrack.png",
"potentiometerProgress.png",
"potentiometerButton.png");

potentionmeter->addTargetWithActionForControlEvents(this,cccontrol_selector(SecondScene::OnValueChange),CCControlEventValueChanged);
potentionmeter->setPosition(ccp(300,50));
this->addChild(potentionmeter,1);

（b）.控件响应事件

void OnValueChange(CCObject *psender,CCControlEvent cevent);

（c）.响应事件实现

void SecondScene::OnValueChange(CCObject *psender,CCControlEvent cevent)
{
CCControlPotentiometer* potentionmeter = (CCControlPotentiometer*)psender;
CCString *valueStr = CCString::createWithFormat("%f",potentionmeter->getValue());
CCLOG(valueStr->getCString());
}

【注意】：（1.）添加头文件和域名空间，#include"cocos-ext.h" using namespace cocos2d::extension;

（2.）一个音量按钮由三部分组成：底座，进度条，控制按钮



2.CCControlSlider音量控制

CCControlSlider *slider = CCControlSlider::create("background.png",
"sliderProgress.png",
"sliderthumb.png");
slider->setPosition(ccp(300,150));
slider->setMinimumValue(0);
slider->setMaximumValue(100);
slider->setValue(30);
this->addChild(slider);

3.进度条/经验条

直观感觉就是CCControlSlider少一个控制按钮，如果不指定第三个参数，程序就会出问题，但是我们可以将第三个参数指定的图用一张透明的图，那就可以了，还需要屏蔽响应事件的功能，setTouchEnabled(false);