swt Combo 设置值和显示内容

swt Combo 设置值和显示内容

import  org.eclipse.swt.SWT;
import  org.eclipse.swt.events.SelectionAdapter;
import  org.eclipse.swt.events.SelectionEvent;
import  org.eclipse.swt.layout.GridLayout;
import  org.eclipse.swt.widgets.Combo;
import  org.eclipse.swt.widgets.Display;
import  org.eclipse.swt.widgets.Shell;

public   class  ComboTest {

     public   static   void  main(String[] args) {
        String[] WEEK  =  {  " Monday " ,  " Tuesday " ,  " Wednesday " };
        Display display  =   new  Display();
        Shell shell  =   new  Shell(display);
        shell.setBounds( 500 ,  100 ,  500 ,  300 );
        shell.setText( " Combo " );
        shell.setLayout( new  GridLayout( 3 ,  true ));
        
         // 创建Combo组件，为下拉列表样式
         final  Combo dc  =   new  Combo(shell, SWT.DROP_DOWN);
        dc.setItems(WEEK);
        dc.addSelectionListener( new  SelectionAdapter(){
            @Override
             public   void  widgetSelected(SelectionEvent e) {
                String key  =   "" + dc.getSelectionIndex();
                String value  =  dc.getText();
                System.out.println( " key: " + key + "     value: " + value);
            }
        });
        
         // 创建Combo组件，为下拉列表样式，且只读
         final  Combo rc  =   new  Combo(shell, SWT.DROP_DOWN  |  SWT.READ_ONLY);
         // 在界面中显示的是123
        rc.add( " 123 " );
         // 第一个值是key从0开始 ,第二个值为value
        rc.setData( " 0 " ,  " 321 " );
        
        rc.add( " 456 " );
        rc.setData( " 1 " ,  " 654 " );
        
        rc.addSelectionListener( new  SelectionAdapter(){
            @Override
             public   void  widgetSelected(SelectionEvent e) {
                String key  =   "" + rc.getSelectionIndex();
                System.out.println( " key: " + key);
                String value  =  (String) rc.getData(key);
                System.out.println( " key: " + key + "     value: " + value);
            }
        });
         // rc.setItems(MONTHS);
         // 创建Combo组件，为List组件样式
        Combo sc  =   new  Combo(shell, SWT.SIMPLE);
        sc.setItems(WEEK);
        shell.open();
         while  ( ! shell.isDisposed()) {
            if  ( ! display.readAndDispatch()) {
               display.sleep();
          }
     }

     display.dispose();

    }

}