Draws a rectangle, based on the specified arguments, which has the appearance of the platform's
focus rectangle if the platform supports such a notion, and otherwise draws a simple rectangle in the receiver's foreground color.
@param x the x coordinate of the rectangle
@param y the y coordinate of the rectangle
@param width the width of the rectangle
@param height the height of the rectangle
@exception SWTException
- ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
@see #drawRectangle(int,int,int,int)