How to lock-down a frame in Java (GUI)
I'm starting a Java project and need a way to completely lock down a frame. By lock down I mean:
- Users can't close it
- Users can't drag it
- Users c开发者_运维百科an't minimize it
- It lies on top of the taskbar and everything else (unless specified)
Basically, it's a full screen takeover.
Try using fullscreen exclusive mode and see if it works for you.
You can try something like:
import javax.swing.*;
import java.awt.*;
public class FullScreenTest extends JFrame {
private GraphicsDevice device;
private boolean isFullScreen = false;
public FullScreenTest(GraphicsDevice device) {
super(device.getDefaultConfiguration());
this.device = device;
setTitle("Display Mode Test");
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
private void initComponents(Container c) {
setContentPane(c);
c.setBackground(Color.RED);
}
public void begin() {
isFullScreen = device.isFullScreenSupported();
setUndecorated(isFullScreen);
setResizable(!isFullScreen);
if (isFullScreen) {
// Full-screen mode
device.setFullScreenWindow(this);
validate();
} else {
// Windowed mode
pack();
setVisible(true);
}
}
public static void main(String[] args) {
GraphicsEnvironment env = GraphicsEnvironment.
getLocalGraphicsEnvironment();
GraphicsDevice[] devices = env.getScreenDevices();
FullScreenTest test = new FullScreenTest(devices[0]);
test.initComponents(test.getContentPane());
test.begin();
}
}
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