使用jdk1.6.0_10新增的窗体透明技术

Java准备进军桌面应用开发领域，所以不断加强程序开发的功能，最近有添加了透明窗体技术。透明窗体的运行效果如下图所示。



                              窗体透明效果

实现代码如下

import java.awt.EventQueue;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JSlider;

import javax.swing.event.ChangeEvent;

import javax.swing.event.ChangeListener;

import com.sun.awt.AWTUtilities;

public class DemoFrame extends JFrame {

           private JSlider slider;

           JButton button;

           private screen screen_;

           public static void main(String args[]) {

                   EventQueue.invokeLater(new Runnable() {

                            public void run() {

                                     try {

                                               setDefaultLookAndFeelDecorated(true);

                                               DemoFrame frame = new DemoFrame();

                                               frame.setVisible(true);

                                     } catch (Exception e) {

                                               e.printStackTrace();

                                     }

                            }

                   });

           }

           public DemoFrame() {

                   super();

                   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                   initComponents();

           }

           private void initComponents() {

                   // 省略界面代码

           }

           private class SliderChangeListener implements ChangeListener {

                   public void stateChanged(final ChangeEvent e) {

                            float v = slider.getValue() / 100f;

                            AWTUtilities.setWindowOpacity(DemoFrame.this, v);// 设置窗体的透明度v

                   }

           }

}