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
typesGroup.setLayout(new GridLayout(2, false));
	
	status = new Label(parent, SWT.BORDER);
	data = new GridData(GridData.FILL_HORIZONTAL);
	data.horizontalSpan = 2;
	data.heightHint = 60;
	status.setLayoutData(data);
	
	createTextTransfer(copyGroup, pasteGroup);
	createRTFTransfer(copyGroup, pasteGroup);
	createHTMLTransfer(copyGroup, pasteGroup);
	createFileTransfer(copyGroup, pasteGroup);
	createImageTransfer(copyGroup, pasteGroup);
	createMyTransfer(copyGroup, pasteGroup);
	createControlTransfer(controlGroup);
	createAvailableTypes(typesGroup);
	
	sc.setMinSize(parent.computeSize(SWT.DEFAULT, SWT.DEFAULT));
	sc.setExpandHorizontal(true);
	sc.setExpandVertical(true);
	
	Point size = shell.computeSize(SWT.DEFAULT, SWT.DEFAULT);
	Rectangle monitorArea = shell.getMonitor().getClientArea();
	shell.setSize(Math.min(size.x, monitorArea.width - 20), Math.min(size.y, monitorArea.height - 20));
	shell.open();
	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ()) display.sleep ();
	}
	clipboard.dispose();
}