Visual Basic Reference
The Shape control is a graphical control displayed as a rectangle, square, oval, circle, rounded rectangle, or rounded square.
Use Shape controls at design time instead of, or in addition to, invoking Circle and Line methods at run time. You can draw a Shape control in a container, but it can't act as a container. The effect of setting the BorderStyle property depends on the setting of the BorderWidth property. If BorderWidth isn't 1 and BorderStyle isn't 0 or 6, BorderStyle is set to 1.