Bug 18229 Walkback when closing ImageAnalyzer
Build 20020527 Win2k 1. Open the ImageAnalyzer SWT example. 2. Load an animated gif. 3. Hit 'animate' 4. Close the window. 5. Walkback
examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/imageanalyzer/ImageAnalyzer.java
alphaCombo = new Combo(group, SWT.DROP_DOWN | SWT.READ_ONLY);
		for (int i = 0; i <= 255; i += 5) {
			alphaCombo.add(String.valueOf(i));
		}
		alphaCombo.select(alphaCombo.indexOf("255"));
		alphaCombo.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent event) {
				alpha();
			}
		});
		
		
		group = new Group(controls, SWT.NULL);
		group.setLayout(new RowLayout());
		group.setText(bundle.getString("Display"));
		incrementalCheck = new Button(group, SWT.CHECK);
		incrementalCheck.setText(bundle.getString("Incremental"));
		incrementalCheck.setSelection(incremental);
		incrementalCheck.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent event) {
				incremental = ((Button)event.widget).getSelection();
			}
		});
		
		transparentCheck = new Button(group, SWT.CHECK);
		transparentCheck.setText(bundle.getString("Transparent"));
		transparentCheck.setSelection(transparent);
		transparentCheck.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent event) {
				transparent = ((Button)event.widget).getSelection();