// step 1 PolygonSymbol rc = new PolygonSymbol(); GeoPoint[] vertex = new GeoPoint[4]; vertex[0] = map.toMapUnits( 125, 300); // bottom/left vertex[1] = map.toMapUnits( 125, 100); // top/left vertex[2] = map.toMapUnits( 475, 100); // top/right vertex[3] = map.toMapUnits( 475, 300); // bottom/right GeoPointsImpl gp = new GeoPointsImpl(); for(int i = 0; i < vertex.Length; i++) gp.addPoint( vertex[i].x, vertex[i].y); rc.setPoints( gp); // step 2 CosmeticLayer cLayer = map.getCosmeticLayer(); // step 3 Symbol symbol = rc.getSymbol(); // step 4 int color = new Color(0, 0, 255).getRGB(); // blue symbol.setColor(Symbol.rmBrushColor, color); symbol.setBrushStyle("brush:bdiagonal"); // step 5 cLayer.getPolygons().add(rc);