Java tutorial
/* SWT/JFace in Action GUI Design with Eclipse 3.0 Matthew Scarpino, Stephen Holder, Stanford Ng, and Laurent Mihalkovic ISBN: 1932394273 Publisher: Manning */ import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.widgets.Canvas; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class DrawExample { public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setText("Drawing Example"); Canvas canvas = new Canvas(shell, SWT.NONE); canvas.setSize(150, 150); canvas.setLocation(20, 20); shell.open(); shell.setSize(200, 220); GC gc = new GC(canvas); gc.drawRectangle(10, 10, 40, 45); gc.drawOval(65, 10, 30, 35); gc.drawLine(130, 10, 90, 80); gc.drawPolygon(new int[] { 20, 70, 45, 90, 70, 70 }); gc.drawPolyline(new int[] { 10, 120, 70, 100, 100, 130, 130, 75 }); gc.dispose(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } }