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SWT Draw2D Example

/* 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.draw2d.ButtonGroup; import org.eclipse.draw2d.ButtonModel; import org.eclipse.draw2d.ChangeEvent; import org.eclipse.draw2d.ChangeListener; import org.eclipse.draw2d.CheckBox; import org.eclipse.draw2d.Clickable; import org.eclipse.draw2d.Figure; import org.eclipse.draw2d.Label; import org.eclipse.draw2d.LightweightSystem; import org.eclipse.draw2d.ToggleModel; import org.eclipse.draw2d.XYLayout; import org.eclipse.draw2d.geometry.Rectangle; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class Draw2D_Example {   public static void main(String args[]) {     final Label label = new Label("Press a button!");     Shell shell = new Shell();     LightweightSystem lws = new LightweightSystem(shell);     Figure parent = new Figure();     parent.setLayoutManager(new XYLayout());     lws.setContents(parent);     Clickable above = new CheckBox("I'm above!");     parent.add(above, new Rectangle(10, 10, 80, 20));     ButtonModel aModel = new ToggleModel();     aModel.addChangeListener(new ChangeListener() {       public void handleStateChanged(ChangeEvent e) {         label.setText("Above");       }     });     above.setModel(aModel);     Clickable below = new CheckBox("I'm below!");     parent.add(below, new Rectangle(10, 40, 80, 20));     ButtonModel bModel = new ToggleModel();     bModel.addChangeListener(new ChangeListener() {       public void handleStateChanged(ChangeEvent e) {         label.setText("Below");       }     });     below.setModel(bModel);     ButtonGroup bGroup = new ButtonGroup();     bGroup.add(aModel);     bGroup.add(bModel);     bGroup.setDefault(bModel);     parent.add(label, new Rectangle(10, 70, 80, 20));     shell.setSize(130, 120);     shell.open();     shell.setText("Example");     Display display = Display.getDefault();     while (!shell.isDisposed()) {       if (!display.readAndDispatch())         display.sleep();     }   } }