在我们的应用中，我们使用Metal L＆amp; F.我们正在使用可浮动的JToolBar;碰巧在执行拖动行为时，它会出现在Windows L＆amp; F中。
任何人都可以说我在拖动JToolBar时如何保留Metal L＆amp; F？
由于
Pd积。我们的JToolBar位于用户BorderLayout布局管理器的JPanel容器中。
也许我的问题解释得很糟糕。所以我发布了一个来自The Java Tutorials的例子，让任何人都知道我的应用程序会发生什么。
如果您执行以下代码，主JFrame将显示为装饰海洋主题;但当我拖动JToolBar时，它的装饰不是海洋。我该怎么办？
非常感谢提前
package components;
/*
* ToolBarDemo.java requires the following addditional files:
* images/Back24.gif
* images/Forward24.gif
* images/Up24.gif
*/
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JToolBar;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.plaf.metal.MetalLookAndFeel;
import javax.swing.plaf.metal.OceanTheme;
public class ToolBarDemo extends JPanel
implements ActionListener {
protected JTextArea textArea;
protected String newline = "\n";
static final private String PREVIOUS = "previous";
static final private String UP = "up";
static final private String NEXT = "next";
public ToolBarDemo() {
super(new BorderLayout());
//Create the toolbar.
JToolBar toolBar = new JToolBar("Still draggable");
addButtons(toolBar);
//Create the text area used for output. Request
//enough space for 5 rows and 30 columns.
textArea = new JTextArea(5, 30);
textArea.setEditable(false);
JScrollPane scrollPane = new JScrollPane(textArea);
//Lay out the main panel.
setPreferredSize(new Dimension(450, 130));
add(toolBar, BorderLayout.PAGE_START);
add(scrollPane, BorderLayout.CENTER);
}
protected void addButtons(JToolBar toolBar) {
JButton button = null;
//first button
button = makeNavigationButton("Back24", PREVIOUS,
"Back to previous something-or-other",
"Previous");
toolBar.add(button);
//second button
button = makeNavigationButton("Up24", UP,
"Up to something-or-other",
"Up");
toolBar.add(button);
//third button
button = makeNavigationButton("Forward24", NEXT,
"Forward to something-or-other",
"Next");
toolBar.add(button);
}
protected JButton makeNavigationButton(String imageName,
String actionCommand,
String toolTipText,
String altText) {
//Look for the image.
String imgLocation = "images/"
+ imageName
+ ".gif";
URL imageURL = ToolBarDemo.class.getResource(imgLocation);
//Create and initialize the button.
JButton button = new JButton();
button.setActionCommand(actionCommand);
button.setToolTipText(toolTipText);
button.addActionListener(this);
if (imageURL != null) { //image found
button.setIcon(new ImageIcon(imageURL, altText));
} else { //no image found
button.setText(altText);
System.err.println("Resource not found: "
+ imgLocation);
}
return button;
}
public void actionPerformed(ActionEvent e) {
String cmd = e.getActionCommand();
String description = null;
// Handle each button.
if (PREVIOUS.equals(cmd)) { //first button clicked
description = "taken you to the previous <something>.";
} else if (UP.equals(cmd)) { // second button clicked
description = "taken you up one level to <something>.";
} else if (NEXT.equals(cmd)) { // third button clicked
description = "taken you to the next <something>.";
}
displayResult("If this were a real app, it would have "
+ description);
}
protected void displayResult(String actionDescription) {
textArea.append(actionDescription + newline);
textArea.setCaretPosition(textArea.getDocument().getLength());
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event dispatch thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("ToolBarDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Add content to the window.
frame.add(new ToolBarDemo());
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event dispatch thread:
//creating and showing this application's GUI.
SwingUtilities.invokeLater(new Runnable() {
public void run() {
setsLF();
createAndShowGUI();
}
});
}
/**
*
*/
private static void setsLF() {
try {
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
MetalLookAndFeel.setCurrentTheme(new OceanTheme());
UIManager.setLookAndFeel(new MetalLookAndFeel());
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(ToolBarDemo.class.getName()).log (java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(ToolBarDemo.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(ToolBarDemo.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(ToolBarDemo.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
JFrame.setDefaultLookAndFeelDecorated(Boolean.TRUE);
return;
}
}
答案 0 :(得分：1)
我按照你所说的做了一个小项目：
public class LafTest
{
public static void main(String[] args)
{
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setSize(500, 500);
JPanel panel = new JPanel(new BorderLayout());
JToolBar toolbar = new JToolBar();
toolbar.add(new JButton("button1"));
toolbar.add(new JButton("button2"));
panel.add(toolbar, BorderLayout.PAGE_START);
frame.add(panel);
frame.setVisible(true);
}
}
对我来说工作正常，JToolBar一直有Metal-LAF。 （操作系统：Windows 7 x64，java版本“1.7.0_09”）
请将您的代码与此代码段进行比较。你可以在某处使用UIManager-class。如果您仍然无法解决此问题，则应该发布一些使用过的代码，也许还有一些有关您的操作系统和使用过的Java版本的详细信息。
答案 1 :(得分：1)
现在看来，翻录的toolBar的顶层容器属于JDialog类型，所以你也可以为它设置lafDecoration：
JFrame.setDefaultLookAndFeelDecorated(Boolean.TRUE);
JDialog.setDefaultLookAndFeelDecorated(true);
适用于jdk7和vista，未测试其他环境。