stacklayout

package swt_jface.demo2; 
import org.eclipse.swt.SWT; 
import org.eclipse.swt.custom.StackLayout; 
import org.eclipse.swt.events.SelectionEvent; 
import org.eclipse.swt.events.SelectionListener; 
import org.eclipse.swt.widgets.Button; 
import org.eclipse.swt.widgets.Display; 
import org.eclipse.swt.widgets.Shell; 
public class StackLayoutSample { 
Display display = new Display(); 
Shell shell = new Shell(display); 

final Button[] buttons = new Button[3]; 
public StackLayoutSample() { 

final StackLayout stackLayout = new StackLayout(); 
shell.setLayout(stackLayout); 
for(int i=0; i<buttons.length; i++) { 
buttons[i] = new Button(shell, SWT.NULL); 
buttons[i].setText("Button #" + i); 
buttons[i].addSelectionListener(new SelectionListener() { 
public void widgetSelected(SelectionEvent e) { 
Button nextButton = null; 
for(int i=0; i<buttons.length; i++) { 
if(buttons[i] == e.widget) { 
if(i == buttons.length - 1) 
nextButton = buttons[0]; 
else 
nextButton = buttons[i+1]; 
} 
} 
stackLayout.topControl = nextButton; 
shell.layout(); 
} 
public void widgetDefaultSelected(SelectionEvent e) { 
} 
}); 
} 

stackLayout.topControl = buttons[0]; 
shell.setSize(200, 100); 
shell.open(); 
while (!shell.isDisposed()) { 
if (!display.readAndDispatch()) { 
display.sleep(); 
} 
} 
display.dispose(); 
} 
public static void main(String[] args) { 
new StackLayoutSample(); 
} 
}

详细出处参考：http://www.jb51.net/article/18811.htm