main->setBackgroundBrush(this->palette().window());
main->setSceneRect(0,0,screenGeometry.width(),15);
this->playbackProgress = main->addRect(0,0,screenGeometry.width()/2,15,QPen(Qt::white),QBrush(Qt::white));
main->setBackgroundBrush(this->palette().window());
main->setSceneRect(0,0,screenGeometry.width(),15);
this->playbackProgress = main->addRect(0,0,screenGeometry.width()/2,15,QPen(Qt::white),QBrush(Qt::white));