例如:
JButton1
点击JInternalFrame1
时显示JDesktopPane
当JButton2
点击JInternalFrame1
关闭并JInternalFrame2
显示JDesktopPane
时。
之前
编辑:使用评论代码
if (JInternalFrame1 == null) {
JInternalFrame1 = new FJInternalFrame();
Desktop.add(JInternalFrame1);
JInternalFrame1.toFront();
} else {
JInternalFrame1.dispose();
}
答案 0 :(得分:4)
看看这个例子。我创建了一个自定义JInternalFrame,每次创建一个新框架时都有不同的标题。当您单击该按钮时,将创建一个新按钮并删除旧按钮
以下是可以帮助您的重要代码。如果桌面大小等于0,我添加一个新框架,另外我删除前一个框架,添加一个新框架,然后重新验证
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (desktop.getAllFrames().length == 0) {
desktop.add(new MyInternalFrame());
} else {
desktop.remove(0);
desktop.add(new MyInternalFrame());
revalidate();
repaint();
}
}
});
这是完整的代码。这是两个不同的文件。
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class InternalFrameDemo1 extends JPanel {
JDesktopPane desktop;
JButton button;
public InternalFrameDemo1() {
desktop = new JDesktopPane();
button = new JButton("Get Next Frame");
setLayout(new BorderLayout());
add(desktop, BorderLayout.CENTER);
add(button, BorderLayout.SOUTH);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (desktop.getAllFrames().length == 0) {
desktop.add(new MyInternalFrame());
} else {
desktop.remove(0);
desktop.add(new MyInternalFrame());
revalidate();
repaint();
}
}
});
}
public static void createAndShowGui() {
JFrame frame = new JFrame();
frame.add(new InternalFrameDemo1());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationByPlatform(true);
frame.pack();
frame.setVisible(true);
}
public Dimension getPreferredSize() {
return new Dimension(500, 500);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
import javax.swing.JInternalFrame;
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
setSize(300,300);
setLocation(xOffset*openFrameCount, yOffset*openFrameCount);
setVisible(true);
}
}