Draws a border around the rectangle specified by lpRect.
The function uses the given brush to draw the border. The width and height of the border is always 1 logical unit.
If the rectangle's bottom coordinate is less than or equal to top, or if right is less than or equal to left, the rectangle is not drawn.
The border drawn by FrameRect is in the same position as a border drawn by the Rectangle member function using the same coordinates (if Rectangle uses a pen that is 1 logical unit wide). The interior of the rectangle is not filled by FrameRect.