I suppose this is a very simple question. I'm just trying to make a rectangle with a black outline.
The following line peculiarly produces nothing:
MainWindow.Draw(sf::Shape::Rectangle(600, sprite_ball.GetPosition().y, 770, sprite_ball.GetPosition().y + 80,
sf::Color::White, 20.f, sf::Color(0, 0, 0)));
EDIT: Solved the problem. I was printing the background after the shapes