带有WindowListener的JDialog-未触发windowClosing [英] JDialog with WindowListener - windowClosing not fired
本文介绍了带有WindowListener的JDialog-未触发windowClosing的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个扩展JDialog的类,该类具有窗口侦听器:
I have a class that extends JDialog that have a window listener:
class MyClass extends JDialog {
public MyClass() {
setDefaultCloseOperation( JDialog.DO_NOTHING_ON_CLOSE );
addWindowListener( new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.out.println("closing...");
//do something...
}
});
}
}
当我单击X按钮时,什么也没有发生.而且我看不到正在关闭..."的字样
When i click in the X button, nothing happens. And I don't see the print of "closing..."
我想念什么?
推荐答案
为我工作.另请参见此相关的示例.
Works for me. See also this related example.
import java.awt.EventQueue;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JDialog;
class MyClass extends JDialog {
public MyClass() {
setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.out.println("closing...");
//do something...
}
});
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
MyClass m = new MyClass();
m.setVisible(true);
}
});
}
}
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