void SongEditorPanel::mutePlaybackTrackBtnPressed( Button* pBtn ) { if(pBtn->isPressed()) { Hydrogen* pEngine = Hydrogen::get_instance(); bool bState = pEngine->getPlaybackTrackState(); pEngine->setPlaybackTrackState(false); } else { Hydrogen* pEngine = Hydrogen::get_instance(); bool bState = pEngine->getPlaybackTrackState(); pEngine->setPlaybackTrackState(true); } }