make a jframe on top of a screen and other os windows to maximize below it

Question

I have the following swing code :

import java.awt.Dimension;
import java.awt.GraphicsEnvironment;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;

public class JFrameDemo {

    private JFrame jframe = new JFrame();

    public JFrameDemo() {
        jframe.setSize(new Dimension(800, 20));
        jframe.setUndecorated(true);
        jframe.getContentPane().add(new JLabel("xxxxxxxxxxx"));
        jframe.setVisible(true);
        jframe.setAlwaysOnTop(true);
        jframe.setLocation(0, 0);

        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        jframe.setMaximizedBounds(env.getMaximumWindowBounds());
        jframe.toFront();
        jframe.repaint();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new JFrameDemo();
            }
        });
    }
}

My jframe window is always on top and also in the top of the screen but when other window from os ,like a browser window, is maximized my jframe overlaps that window . When any os windows are maximized to be maximized below my jframe window. you can see:

WRONG Behavior

GOOD Behavior

Since I understood java has no support for that feature so I am asking now if exists any native library which should I load using the jni.

Yep. Write an app. that is ***not*** bloody irritating in that it presumes to affect how other apps. maximize! — Andrew Thompson, Jul 18 '16 at 06:42
I not want to affect how other apps works, I just want that my app to have the same behavior like a windows toolbar positioned at the top of the screen. — aurelianr, Jul 18 '16 at 11:48
The OS is (presumably) under that control of the end user. The only thing they can, and probably will, do with your app. is uninstall it. — Andrew Thompson, Jul 18 '16 at 12:05
just trying to make an application like: http://www.battware.co.uk/desktopticker_downloads.htm — aurelianr, Jul 18 '16 at 13:13

score 0 · Accepted Answer · edited May 23 '17 at 12:32

0

So the behavior that I am looking for can be made using the jna lib: Docking a java application jna on windows

edited May 23 '17 at 12:32

Community

1
1

answered Jul 25 '16 at 04:24

aurelianr

538
2
12
35

make a jframe on top of a screen and other os windows to maximize below it

1 Answers1