Bug 272616 GB18030: 4-byte GB18030 displayed as ? in SWT Clipboard RTFTransfer.
examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/clipboard/ClipboardExample.java
ScrolledComposite sc = new ScrolledComposite(shell, SWT.H_SCROLL | SWT.V_SCROLL);
	Composite parent = new Composite(sc, SWT.NONE);
	sc.setContent(parent);
	parent.setLayout(new GridLayout(2, true));
	
	Group copyGroup = new Group(parent, SWT.NONE);
	copyGroup.setText("Copy From:");
	GridData data = new GridData(GridData.FILL_BOTH);
	copyGroup.setLayoutData(data);
	copyGroup.setLayout(new GridLayout(3, false));
	
	Group pasteGroup = new Group(parent, SWT.NONE);
	pasteGroup.setText("Paste To:");
	data = new GridData(GridData.FILL_BOTH);
	pasteGroup.setLayoutData(data);
	pasteGroup.setLayout(new GridLayout(3, false));
	
	Group controlGroup = new Group(parent, SWT.NONE);
	controlGroup.setText("Control API:");
	data = new GridData(GridData.FILL_BOTH);
	data.horizontalSpan = 2;
	controlGroup.setLayoutData(data);
	controlGroup.setLayout(new GridLayout(5, false));
	
	Group typesGroup = new Group(parent, SWT.NONE);
	typesGroup.setText("Available Types");
	data = new GridData(GridData.FILL_BOTH);
	data.horizontalSpan = 2;
	typesGroup.setLayoutData(data);