Shape;
BoundingRectangle(1,1);
MoveTo(left,top);
LineTo(right,top);

ChangePen(PEN_SOLID,0,RGB(255,0,0));
LineTo(right,bottom);

ChangePen(PEN_SOLID,0,RGB(0,255,0));
LineTo(left,bottom);

ChangePen(PEN_SOLID,0,RGB(0,0,255));
LineTo(left,top);
 