Widget can be disposed: addDisposeListener(DisposeListener listener) : Widget « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. Widget

import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class WidgetDisposeListener {

  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);

    shell.addDisposeListener(new DisposeListener() {
      public void widgetDisposed(DisposeEvent e) {
        System.out.println(e.widget + " disposed");
      }
    });

    shell.setSize(260, 120);
    shell.open();

    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
  }

}

17.2.Widget
	17.2.1.	Set Control Size
	17.2.2.	The Widget Class
	17.2.3.	Get Widget Style
	17.2.4.	Widget can be disposed: addDisposeListener(DisposeListener listener)
	17.2.5.	Control Size and location
	17.2.6.	Set Bounds
	17.2.7.	Set Location and Size
	17.2.8.	Control: set a background image (a dynamic gradient)
	17.2.9.	Inherit a background color or image
	17.2.10.	Setting Widget bounds
	17.2.11.	Compute Widget Size
	17.2.12.	Get Preferred size
	17.2.13.	Relative position to Control
	17.2.14.	Relative position to Display
	17.2.15.	Add ControlListener to control