本文综合了GridLayout、GridData、Composite以及Tree、TreeItem构造了一个比较复杂的应用例子。

   /*---------- 构造代码 ---------*/

public class GridLayoutObject {
 
 public void buildLayout(){
  
  Display display = new Display();
  Shell shell = new Shell(display);
  
  GridLayout configLayout = new GridLayout();
  configLayout.marginHeight = 0;
  configLayout.marginWidth = 0;
  
  shell.setLayout(configLayout);
  
  GridData gridData;
  
  SashForm form = new SashForm(shell,SWT.HORIZONTAL);
  gridData = new GridData(GridData.FILL_BOTH);
  form.setLayoutData(gridData);
    
     Composite cLeftSide = new Composite(form, SWT.BORDER);
     gridData = new GridData(GridData.FILL_BOTH);
     cLeftSide.setLayoutData(gridData);
    
     FormLayout layout = new FormLayout();
     cLeftSide.setLayout(layout);
      
     Composite cFilterArea = new Composite(cLeftSide, SWT.NONE);
     cFilterArea.setLayout(new FormLayout());
      
     final Text txtFilter = new Text(cFilterArea, SWT.BORDER);
     txtFilter.setText("hi");
     txtFilter.selectAll();
     txtFilter.setFocus();
    
     Label lblX = new Label(cFilterArea, SWT.WRAP);
     lblX.setText("l1");
    
     Label lblSearch = new Label(cFilterArea, SWT.NONE);
     lblSearch.setText("l2");
    
     Tree tree = new Tree(cLeftSide, SWT.NONE);
     FontData[] fontData = tree.getFont().getFontData();
     fontData[0].setStyle(SWT.BOLD);
     Font filterFoundFont = new Font(display, fontData);
    
     FormData formData;

       formData = new FormData();
       /*注意：80，代表*/
       formData.bottom = new FormAttachment(100, -5);
       formData.left = new FormAttachment(0, 0);
       formData.right = new FormAttachment(100, 0);
       cFilterArea.setLayoutData(formData);
      
       formData = new FormData();
       formData.top = new FormAttachment(0,5);
       formData.left = new FormAttachment(0, 5);
       lblSearch.setLayoutData(formData);

       formData = new FormData();
       formData.top = new FormAttachment(0,5);
       formData.left = new FormAttachment(lblSearch,5);
       formData.right = new FormAttachment(lblX, -3);
       txtFilter.setLayoutData(formData);

       formData = new FormData();
       formData.top = new FormAttachment(0,5);
       formData.right = new FormAttachment(100,-5);
       lblX.setLayoutData(formData);

       formData = new FormData();
       formData.top = new FormAttachment(0, 0);
       formData.left = new FormAttachment(0,0);
       formData.right = new FormAttachment(100,0);
       formData.bottom = new FormAttachment(cFilterArea,-1);
       tree.setLayoutData(formData);
      
       Composite cRightSide = new Composite(form, SWT.NULL);
       configLayout = new GridLayout();
       configLayout.marginHeight = 3;
       configLayout.marginWidth = 0;
       cRightSide.setLayout(configLayout);
  
       // Header
       Composite cHeader = new Composite(cRightSide, SWT.BORDER);
       configLayout = new GridLayout();
       configLayout.marginHeight = 3;
       configLayout.marginWidth = 0;
       configLayout.numColumns = 2;
       configLayout.marginRight = 5;
       cHeader.setLayout(configLayout);
       gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_CENTER);
       cHeader.setLayoutData(gridData);
  
       cHeader.setBackground(display.getSystemColor(SWT.COLOR_LIST_SELECTION));
       cHeader.setForeground(display.getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT));
      
       Label lHeader = new Label(cHeader, SWT.NULL);
       lHeader.setBackground(display.getSystemColor(SWT.COLOR_LIST_SELECTION));
       lHeader.setForeground(display.getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT));
       fontData = lHeader.getFont().getFontData();
       fontData[0].setStyle(SWT.BOLD);
       int fontHeight = (int)(fontData[0].getHeight() * 1.2);
       fontData[0].setHeight(fontHeight);
       Font headerFont = new Font(display, fontData);
       lHeader.setFont(headerFont);
       gridData = new GridData(GridData.VERTICAL_ALIGN_CENTER | GridData.HORIZONTAL_ALIGN_BEGINNING);
       lHeader.setLayoutData(gridData);
      
       Label usermodeHint = new Label(cHeader, SWT.NULL);
       usermodeHint.setBackground(display.getSystemColor(SWT.COLOR_LIST_SELECTION));
       usermodeHint.setForeground(display.getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT));
       gridData = new GridData(GridData.VERTICAL_ALIGN_CENTER | GridData.HORIZONTAL_ALIGN_END | GridData.GRAB_HORIZONTAL);
       usermodeHint.setLayoutData(gridData);
      
       Composite cConfigSection = new Composite(cRightSide, SWT.NULL);
       StackLayout layoutConfigSection = new StackLayout();
       cConfigSection.setLayout(layoutConfigSection);
       gridData = new GridData(GridData.FILL_BOTH);
       gridData.horizontalIndent = 2;
       cConfigSection.setLayoutData(gridData);
  
  
       form.setWeights(new int[] {50,80});
      
       Listener scResizeListener = new Listener() {
    public void handleEvent(Event event) {
     setupSC((ScrolledComposite)event.widget);
    }
   };
       ScrolledComposite sc = new ScrolledComposite(cConfigSection, SWT.H_SCROLL | SWT.V_SCROLL);
         sc.setExpandHorizontal(true);
         sc.setExpandVertical(true);
         sc.setLayoutData(new GridData(GridData.FILL_BOTH));
        sc.getVerticalBar().setIncrement(16);
        sc.addListener(SWT.Resize, scResizeListener);
      
        ModelConfigSection a = new ModelConfigSection();
        Composite c = a.configSectionCreate(sc);
        sc.setContent(c);
       TreeItem item1 = new TreeItem(tree,SWT.NULL);
       item1.setText("说明");
       item1.setData("Panel", sc);
       layoutConfigSection.topControl = sc;
      
       ScrolledComposite sc1 = new ScrolledComposite(cConfigSection, SWT.H_SCROLL | SWT.V_SCROLL);
          sc1.setExpandHorizontal(true);
          sc1.setExpandVertical(true);
          sc1.setLayoutData(new GridData(GridData.FILL_BOTH));
         sc1.getVerticalBar().setIncrement(16);
         sc1.addListener(SWT.Resize, scResizeListener);
   
   
       
       TreeItem item2 = new TreeItem(tree,SWT.NULL);
       item2.setText("网络配置");
       item2.setData("Panel",sc1);

       ScrolledComposite sc2 = new ScrolledComposite(cConfigSection, SWT.H_SCROLL | SWT.V_SCROLL);
          sc2.setExpandHorizontal(true);
          sc2.setExpandVertical(true);
          sc2.setLayoutData(new GridData(GridData.FILL_BOTH));
         sc2.getVerticalBar().setIncrement(16);
         sc2.addListener(SWT.Resize, scResizeListener);
        
       TreeItem item21 = new TreeItem(item2,SWT.NULL);
       item21.setText("路由配置");
       item21.setData("Panel", sc2);
      
      
       ScrolledComposite sc3 = new ScrolledComposite(cConfigSection, SWT.H_SCROLL | SWT.V_SCROLL);
          sc3.setExpandHorizontal(true);
          sc3.setExpandVertical(true);
          sc3.setLayoutData(new GridData(GridData.FILL_BOTH));
         sc3.getVerticalBar().setIncrement(16);
         sc3.addListener(SWT.Resize, scResizeListener);
       TreeItem item22 = new TreeItem(item2,SWT.NULL);
       item22.setText("网关配置");
         item22.setData("Panel", sc3);
      
       TreeItem[] items = { tree.getItems()[0] };
       tree.setSelection(items);
      
       shell.pack();
   shell.open();
   
   while(!shell.isDisposed()){
    if(!display.readAndDispatch()){
     display.sleep();
    }
   }
   
  display.dispose();
 }
 
 public void setupSC(ScrolledComposite sc) {
  Composite c = (Composite) sc.getContent();
  if (c != null) {
   Point size1 = c.computeSize(sc.getClientArea().width, SWT.DEFAULT);
   Point size = c.computeSize(SWT.DEFAULT, size1.y);
   sc.setMinSize(size);
  }
  sc.getVerticalBar().setPageIncrement(sc.getSize().y);
 }

}

/*----------    动作控制接口以及实现代码 --------*/

public interface ConfigSectionTest {
 public Composite configSectionCreate(final Composite parent);
}

public class ModelConfigSection implements ConfigSectionTest {

 public Composite configSectionCreate(Composite parent) {
  GridData gridData;
  GridLayout layout;
  
  final Composite cMode = new Composite(parent,SWT.WRAP);
  gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL|GridData.VERTICAL_ALIGN_FILL);
  cMode.setLayoutData(gridData);
  layout = new GridLayout();
  layout.numColumns =4;
  layout.marginHeight = 0;
  cMode.setLayout(layout);
  
  
  gridData = new GridData();
  gridData.horizontalSpan = 4;
  final Group gRadio = new Group(cMode, SWT.WRAP);
  gRadio.setText("用户熟练程度");
  gRadio.setLayoutData(gridData);
  gRadio.setLayout(new RowLayout(SWT.HORIZONTAL));
  
  Button button0 = new Button (gRadio, SWT.RADIO);
  button0.setText("初级");
  
  Button button1 = new Button (gRadio, SWT.RADIO);
  button1.setText("中级");
  
  Button button2 = new Button (gRadio, SWT.RADIO);
  button2.setText("高级");
  
  button0.setSelection(true);
  
  gridData = new GridData(GridData.FILL_HORIZONTAL);
     final Label label = new Label(cMode, SWT.WRAP);
     gridData.horizontalSpan = 4;
     label.setLayoutData(gridData);
     label.setText("什么玩意！");
    
    
  return cMode;
 }

}

/*----------- 测试代码 ----------------*/

public class GridLayoutTest {
 
 public static void main(String[] args){
  
  GridLayoutObject obj = new GridLayoutObject();
  obj.buildLayout();
  
  
 }
}


运行结果：