运行下面的代码试试、dialog.setVisible(true)；有没有这句、拖动窗体（win xp下）、窗体不能正确绘制、ubuntu能正常绘制

[dejinzhao]

public class TestFrame extends javax.swing.JFrame {
public TestFrame() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
getContentPane().add(new javax.swing.JButton("button"), java.awt.BorderLayout.NORTH);
getContentPane().add(new javax.swing.JLabel("label"), java.awt.BorderLayout.CENTER);
pack();
dialog=new javax.swing.JDialog(this);
dialog.getContentPane().add(new javax.swing.JButton("dialog button"));
dialog.pack();
dialog.setBounds(300,330,300,200);
setSize(600,400);
setLocationRelativeTo(null);
setVisible(true);
try{
com.sun.awt.AWTUtilities.setWindowOpacity(dialog,0.5f);
dialog.setVisible(true);//关键、没这句试试
}catch(java.lang.Exception e){
e.printStackTrace(System.out);
}
}
public static void main(String args[]) {
javax.swing.JFrame.setDefaultLookAndFeelDecorated(true);
new TestFrame();
}
javax.swing.JDialog dialog;
}

[lacus87]

我真的得回去学小学语文了.....

[huntor]

ubuntu8.04 jre6u20 不支持
com.sun.awt.AWTUtilities.setWindowOpacity(dialog,0.5f);