java 窗体透明_java中窗体的标题栏如何设为透明

左手的ㄟ右手 2022-11-05 10:53 130阅读 0赞

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import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.Toolkit;

import java.awt.event.ComponentEvent;

import java.awt.event.ComponentListener;

import java.awt.event.WindowEvent;

import java.awt.event.WindowFocusListener;

import javax.swing.JButton;

import javax.swing.JComponent;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.UIManager;

import com.birosoft.liquid.LiquidLookAndFeel;

public class TestEvent extends JComponent

implements ComponentListener,WindowFocusListener \{

private JFrame frame;

private boolean start = false;

private Image background;

private Point p;

// 获得当前屏幕快照

public void updateBackground() \{

try \{

Robot rbt = new Robot();

Toolkit tk = Toolkit.getDefaultToolkit();

Dimension dim = tk.getScreenSize();

background = rbt.createScreenCapture(new Rectangle(0, 0, (int) dim

.getWidth(), (int) dim.getHeight()));

\} catch (Exception ex) \{

// p(ex.toString());

// 此方法没有申明过 ，因为无法得知上下文 。因636f70793231313335323631343130323136353331333262353331为不影响执行效果 ，先注释掉它 ex.printStackTrace();

// 将窗口掉离出屏幕以获得纯粹的背景图象

public void refresh() \{

if (start == true) \{

this.updateBackground();

frame.setLocation(p);

if (p.x < 0 || p.y < 0)

frame.setLocation(0, 0);

this.repaint();

public void componentHidden(ComponentEvent e) \{

System.out.println("Hidden");

// 窗口移动时

public void componentMoved(ComponentEvent e) \{

System.out.println("moved");

this.repaint();

// 窗口改变大小时

public void componentResized(ComponentEvent e) \{

System.out.println("resized");

this.repaint();

public void componentShown(ComponentEvent e) \{

System.out.println("shown");

// 窗口得到焦点后,用refresh()方法更新界面

public void windowGainedFocus(WindowEvent e) \{

System.out.println("gainedFocus");

refresh();

start = false;

// 窗口失去焦点后,将其移出屏幕

public void windowLostFocus(WindowEvent e) \{

System.out.println("lostFocus");

if (frame.isShowing() == true) \{

System.out.println("visible");

\} else \{

System.out.println("invisible");

start = true;

p = frame.getLocation();

frame.setLocation(-2000, -2000);

public TestEvent(JFrame frame) \{

super();

this.frame = frame;

updateBackground();

this.setSize(200, 120);

this.setVisible(true);

frame.addComponentListener(this);

frame.addWindowFocusListener(this);

// 绘制外观,注意,其中 pos,offset 是为了将特定部分的图象贴到窗口上

public void paintComponent(Graphics g) \{

Point pos = this.getLocationOnScreen();

Point offset = new Point(-pos.x, -pos.y);

g.drawImage(background, offset.x, offset.y, null);

/\*\*

\* @param args

\*/

public static void main(String\[\] args) \{

try \{

// UIManager.setLookAndFeel("org.fife.plaf.Office2003.Office2003LookAndFeel");

// UIManager.setLookAndFeel("org.fife.plaf.OfficeXP.OfficeXPLookAndFeel");

UIManager.setLookAndFeel("com.birosoft.liquid.LiquidLookAndFeel");

LiquidLookAndFeel.setLiquidDecorations(true);

// LiquidLookAndFeel.setLiquidDecorations(true, "mac");

// UIManager.setLookAndFeel(new SubstanceLookAndFeel());

// UIManager.setLookAndFeel(new SmoothLookAndFeel());

// UIManager.setLookAndFeel(new QuaquaLookAndFeel());

// UIManager.put("swing.boldMetal", false);

if (System.getProperty("substancelaf.useDecorations") == null) \{

JFrame.setDefaultLookAndFeelDecorated(true);

// JDialog.setDefaultLookAndFeelDecorated(true);

System.setProperty("sun.awt.noerasebackground", "true");

// SubstanceLookAndFeel.setCurrentTheme(new

// SubstanceLightAquaTheme());

// UIManager.setLookAndFeel("org.fife.plaf.VisualStudio2005.VisualStudio2005LookAndFeel");

\} catch (Exception e) \{

System.err.println("Oops! Something went wrong!");

JFrame frame = new JFrame("Transparent Window");

TestEvent t = new TestEvent(frame);

t.setLayout(new BorderLayout());

JButton button = new JButton("This is a button");

t.add("North", button);

JLabel label = new JLabel("This is a label");

t.add("South", label);

frame.getContentPane().add("Center", t);

frame.pack();

frame.setSize(150, 100);

frame.show();

frame.setDefaultCloseOperation(JFrame.EXIT\_ON\_CLOSE);

// t.start=true;

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