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