Setting an icon to a JFrame's Title bar

MRMadhav · 02-20-2006, 05:49 AM

Hi guys

,

I was wondering if anyone knew how to add an icon to the title bar of all the JFrames of an Application and also of All the JInternal Frames.
Thanks.

Mega Man X · 02-20-2006, 06:06 AM

Doesn't JFrame have a setIconImage method? Something like this:

Image img = Toolkit.getDefaultToolkit().getImage("image.jpg");
setIconImage(img);

MRMadhav · 02-20-2006, 06:09 AM

That does not work. It leaves the space provided for the icon blank. Any reason why... where does that function take the image from?

Mega Man X · 02-20-2006, 06:23 AM

Try something like this:

Code:

import java.awt.*;
import javax.swing.*;

public class MainClass extends JFrame {
	
    private ImageIcon image = null;
	
    public MainClass() {
	setDefaultCloseOperation(EXIT_ON_CLOSE);
	setSize(320, 240);
		
	// load the image to use on the titlebar
	image = new ImageIcon("google.gif");
	setIconImage(image.getImage());
		
	setVisible(true);
			
    }

    public static void main(String[] args) {
		
	MainClass test = new MainClass();

    }

}

I've used the google gif for testing and it worked. Make sure the image is on the same directory as your class

Mega Man X · 02-20-2006, 06:28 AM

Quote:

Originally Posted by MRMadhav

That does not work. It leaves the space provided for the icon blank. Any reason why... where does that function take the image from?

That's the thing. That image does not exist, so the toolkit leaves it blank. If you specify your image to the path, it should work, as in the example above. I usually use a similar code to change the cursor to a blank cursor when creating games with Java

MRMadhav · 02-20-2006, 07:43 AM

Sorry for the late reply!

I tried what you said but that did not work and the icon is in the class's folder. Maybe there is another reason. In fact I took an icon file(ccs.ico) and renamed it as ccs.gif. Any picture viewer sees it as a correct image but maybe that is causing a problem? Is there any other way?

MRMadhav · 02-20-2006, 07:57 AM

Ok, I cross checked the procedure with other gif images and it worked! whats wrong with my image?

Mega Man X · 02-20-2006, 08:41 AM

I'm not familiar with .ico images, but one thing is for certain: Renaming a file won't change its attributes. I mean, it will still be a ico type file. I think Gimp could convert it to some format that Java can use, such as bmp, jpg, png, gif and etc.

MRMadhav · 02-20-2006, 09:32 AM

Ok thanks it worked, but there is a small color problem when i converted it! Thanks again for your help!

Mega Man X · 02-20-2006, 10:14 AM

You're welcome mate

. I think the loss of color is normal. The ico you're trying to convert has (I guess) less colors then the new image type. Maybe creating a new icon from scratch should work perfectly