A application that exist with or without JFrames

Hey,
I'm doing some little piece of software.
Thought, i want to do something i very appreciate in few application.

"The application does not close when his principale Frame is closed"
and
"If the application is focused again, show the principal Frame"

I first tryed to make it happens by using first "setVisible(false);" when i push on "close the window", and then with a "FocusListener" say "if focused, then, setVisible(true)".
My issue is that i can't focus something inivisible, it seems.

I don't know if it's understandable or not, ask for any other formulation, i'm up to it :o

Example of application doing that : MSN, Pidgin... (and maybe Skype, thought)

Moved from New to Java

db

Quote:

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Originally Posted by Otyugh

My issue is that i can't focus something inivisible, it seems.

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I don't see how you could even think this could be possible. Where would you possibly click the mouse or tab to in order to transfer the focus to a UI element that's not displayed?

You might want to take a look at the java.awt.TrayIcon API.

db

Let my show you a situation.
Class App(){
public static void main(String[] args) {
JFrame jf = new JFrame();
jf.setVisible(false);
}

Now, i have a "App" launched (without any windows) and the user can see AND select it.

When the user "select the application" I want it to set jf.setVisible(true);.

I don't know how to do that ! I mean, when you select the "application" a focus go to one of the "Windows of the application". This MUST be a listener somewhere. I don't know which.

Quote:

---

Originally Posted by Otyugh

Let my show you a situation.
Class App(){
public static void main(String[] args) {
JFrame jf = new JFrame();
jf.setVisible(false);
}

Now, i have a "App" launched (without any windows) and the user can see AND select it.

---

How can the user see or select anything if there is no visible window? I do not understand what you are trying to do.

You know theses "icones" that appear in the bottom of your "main os interface" ?

A very usual example would be theses calendars that you "display" only time to time, but which are always "launched but without window" in fact.

So you want to launch the GUI, *not* make it invisible but rather you wish to iconify it. That's a big difference. You will want to call the JFrame's setState(...) method and pass in the constant JFrame.ICONIFIED.

Quote:

---

Originally Posted by Otyugh

Let my show you a situation.
Class App(){
public static void main(String[] args) {
JFrame jf = new JFrame();
jf.setVisible(false);
}

Now, i have a "App" launched (without any windows) and the user can see AND select it.
...

---

How will the user be able to select the frame when the frame is not yet displayable? [jf.setVisible(false);] Where will the user "select" the App? I guess maybe you are trying to create an App with "undecorated frame" :(happy):