Shell shell = new Shell(Display.getDefault()); 
 

Graph g = (Graph) getControl();
Rectangle bounds = g.getContents().getBounds();
Point size = new Point(g.getContents().getSize().width, g.getContents()
	.getSize().height);
org.eclipse.draw2d.geometry.Point viewLocation = g.getViewport()
	.getViewLocation();
final Image image = new Image(null, size.x, size.y);
GC gc = new GC(image);
SWTGraphics swtGraphics = new SWTGraphics(gc);

swtGraphics.translate(-1 * bounds.x + viewLocation.x, -1 * bounds.y
	+ viewLocation.y);
g.getViewport().paint(swtGraphics);
gc.copyArea(image, 0, 0);
gc.dispose();
ImageLoader loader = new ImageLoader();
loader.data = new ImageData[] { image.getImageData() };
loader.save(filename, format);