如何做一个主窗体和子窗体？

[foxman]

如何做一个主窗体和子窗体？

[asert]

用JDesktopPane和JInternalFrame;
see:
http://java.sun.com/docs/books/tutorial/uiswing/components/internalframe.html

[yuntailyg]

//InternalFrameDemo.java

import javax.swing.JInternalFrame;
import javax.swing.JDesktopPane;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JMenuBar;
import javax.swing.JFrame;

import java.awt.event.*;
import java.awt.*;

public class InternalFrameDemo extends JFrame {
JDesktopPane desktop;

public InternalFrameDemo() {
super("InternalFrameDemo");

//Make the big window be indented 50 pixels from each edge
//of the screen.
int inset = 50;
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
setBounds(inset, inset,
screenSize.width - inset*2,
screenSize.height-inset*2);

//Quit this app when the big window closes.
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});

//Set up the GUI.
desktop = new JDesktopPane(); //a specialized layered pane
createFrame(); //Create first window
setContentPane(desktop);
setJMenuBar(createMenuBar());

//Make dragging faster:
desktop.putClientProperty("JDesktopPane.dragMode", "outline");
}

protected JMenuBar createMenuBar() {
JMenuBar menuBar = new JMenuBar();

JMenu menu = new JMenu("Document");
menu.setMnemonic(KeyEvent.VK_D);
JMenuItem menuItem = new JMenuItem("New");
menuItem.setMnemonic(KeyEvent.VK_N);
menuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
createFrame();
}
});
menu.add(menuItem);
menuBar.add(menu);

return menuBar;
}

protected void createFrame() {
MyInternalFrame frame = new MyInternalFrame();
frame.setVisible(true); //necessary as of 1.3; OK to use before
desktop.add(frame);
try {
frame.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
}

public static void main(String[] args) {
InternalFrameDemo frame = new InternalFrameDemo();
frame.setVisible(true);
}
}

//MyInternalFrame.java

import javax.swing.JInternalFrame;

import java.awt.event.*;
import java.awt.*;

public class MyInternalFrame extends JInternalFrame {
static int openFrameCount = 0;
static final int xOffset = 30, yOffset = 30;

public MyInternalFrame() {
super("Document #" + (++openFrameCount),
true, //resizable
true, //closable
true, //maximizable
true);//iconifiable

//...Create the GUI and put it in the window...

//...Then set the window size or call pack...
setSize(300,300);

//Set the window's location.
setLocation(xOffset*openFrameCount, yOffset*openFrameCount);
}
}

java tutorial 中的示例!