TUIRectangle.Union Method Returns a new rectangle which contains both of the source rectangles. Syntax Unit: FlexCel.Core class function TUIRectangle.Union(const a: TUIRectangle; const b: TUIRectangle): TUIRectangle; static; Parameters <-> Parameter Type Description const a TUIRectangle First rectangle. const b TUIRectangle Second rectangle. See also TUIRectangle