Bug 230071 Snippet223 requires an image
I just tried to run Snippet223 and it fails trying to acquire the 'eclipse.png' image...all the other snippets I've seen are self-contained (one of their best features...;-).
examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet223.java
composite.setLayout(layout);
	label = new Label (composite, SWT.NONE);
	label.setText("Scale");	
	new Scale (composite, SWT.NONE);
	label = new Label (composite, SWT.NONE);
	label.setText("Spinner");	
	new Spinner (composite, SWT.BORDER);
	label = new Label (composite, SWT.NONE);
	label.setText("Slider");	
	new Slider (composite, SWT.NONE);
	ExpandItem item2 = new ExpandItem (bar, SWT.NONE, 2);
	item2.setText("What is your favorite range widget");
	item2.setHeight(composite.computeSize(SWT.DEFAULT, SWT.DEFAULT).y);
	item2.setControl(composite);
	item2.setImage(image);
	
	item1.setExpanded(true);
	bar.setSpacing(8);
	shell.setSize(400, 350);
	shell.open();
	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ()) {
			display.sleep ();
		}
	}
	image.dispose();
	display.dispose();
}
}