"SimpleAudioEngine has not been declared" error when trying to enable music pausing in Cocos2D-X

Question

So using Cocos2D-X, in the AppDelegate.cpp file, I uncomment the line:

SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();

so that my audio will be paused when the app is exited. However, when I do this, I get the error stated in the title. How can I fix this?

Answer 1

the answer from Dmitry Fomin is correct, or after you put

#include "SimpleAudioEngine.h"

you can use

CocosDenshion::SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();

Answer 2

SimpleAudioEngine.h header file contain SimpleAudioEngine class so add

#include "SimpleAudioEngine.h" 

in your file. SimpleAudioEngine is in CocosDenshion namespace so you can use

using namespace CocosDenshion;

SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();

or by

CocosDenshion::SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();

Answer 3

It seems to me that you forgot to add declaration of SimpleAudioEngine. Add this lines to AppDelegate.cpp:

#include "SimpleAudioEngine.h"

using namespace CocosDenshion;