desktoptest.java

来自「JAVA 2应用开发指南」· Java 代码 · 共 33 行

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class DesktopTest extends JFrame {
  private JDesktopPane Desktop;
  public DesktopTest(){
    super( "Using a JDesktopPane" );
    JMenuBar bar = new JMenuBar();
    JMenu addMenu = new JMenu( "Add" );
    JMenuItem newFrame = new JMenuItem( "Internal Frame" );
    addMenu.add( newFrame );
    bar.add( addMenu );
    setJMenuBar( bar );
    Desktop = new JDesktopPane();
    getContentPane().add( Desktop );
    newFrame.addActionListener(new ActionListener() {
      public void actionPerformed( ActionEvent event ) {
        JInternalFrame f = new JInternalFrame("Internal Frame", true, true, true, true );
        Container container = f.getContentPane();
        f.pack();
        Desktop.add( f );
        f.setVisible( true );
      }
    }); // end call to addActionListener
    setSize( 300, 220 );
    setVisible( true );
  } // end constructor
  public static void main( String args[] ){
    DesktopTest application = new DesktopTest();
    application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
  }
}