JFrame always on top property

Use a [url=http://java.sun.com/j2se/1.5.0/docs/api/java/awt/event/FocusListener.html]FocusListener[/url] and the [url=http://java.sun.com/j2se/1.5.0/docs/api/java/awt/Window.html#toFront()]toFront()[/url] method. This will not work 100% of the time, though. By the way, JFrame is a Swing component, and this should have been posted in the Swing forum.

CaptainMorgan08a at 2007-7-8 1:22:42 >

I said it would not work 100% of the time. Write a test program, it does work most of the time.

import javax.swing.JFrame;

import java.awt.event.FocusAdapter;

import java.awt.event.FocusEvent;

public class WindowOnTop extends JFrame

{

public WindowOnTop()

{

addFocusListener(new FocusAdapter()

{

public void focusLost(FocusEvent e)

{

requestFocus();

toFront();

}

});

setSize(500, 500);

setLocation(20, 20);

setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

setVisible(true);

}

public static void main(String[] args)

{

new WindowOnTop();

}

}

CaptainMorgan08a at 2007-7-8 1:22:42 >

> You only get the focusLost event if the JFrame is in

> focus.

> And there's no way to get the focus back from the

> OS.

Look at my example program. I requested focus before moving it to the front. It does work, try it out.

> Read here:

> http://java.sun.com/j2se/1.4.2/docs/api/java/awt/Windo

> w.html#toFront()

> In Windows for example toFront has no affect.

We're talking about JFrames, not Windows.

CaptainMorgan08a at 2007-7-8 1:22:42 >

> I meant Windows OS.

Ah, you need to specify these things. ;-)

> Window is an ancestor of JFrame and uses toFront of

> Window class.

> I tried it, and it doestn't work.

Works for me. I have Windows XP SP2.

> Anyway it's a nice idea in theory but not a practical

> one, since grabbing the focus from the application

> the user wanted to be in focus is a bad thing.

> All the AlwaysOnTop uses I know of aren't meant to

> prevent the user from using other applications.

I know, I was just suggesting this to the OP because I know no other way to do it using java.

CaptainMorgan08a at 2007-7-8 1:22:42 >