Returns a rectangle which represents the rectangular union of the collection of polygons the receiver maintains to describe its area.
@return a bounding rectangle for the region
@exception SWTException <ul> <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> </ul>
@see Rectangle#union
See Implementation
Returns a rectangle which represents the rectangular union of the collection of polygons the receiver maintains to describe its area.
@return a bounding rectangle for the region
@exception SWTException <ul> <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> </ul>
@see Rectangle#union