cocos2d-x3.8.1如何给ControlButton添加单击事件

[york666]

如题
controlBtn->addTargetWithActionForControlEvents(this, p1, p2);
p1,p2这两个参数该怎么填?

[viewbird]

试试这个
this,cccontrol_selector(ChooseScene::changeMusicVol), Control::EventType::VALUE_CHANGED