Question

how can I disable the window top-right button to close application?

Thanks a lot

Answer 1

I don’t think you can disable it (like make it gray) since it is managed by the underlying OS window manager, not by SWT directly.

You can add a listener though, in order to ignore any close event, a bit like in this snippet:

import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;

public class Snippet99 {

public static void main (String [] args) {
    Display display = new Display ();
    final Shell shell = new Shell (display);
    shell.addListener (SWT.Close, new Listener () {
        public void handleEvent (Event event) {
            int style = SWT.APPLICATION_MODAL | SWT.YES | SWT.NO;
            MessageBox messageBox = new MessageBox (shell, style);
            messageBox.setText ("Information");
            messageBox.setMessage ("Close the shell?");
            event.doit = messageBox.open () == SWT.YES;
        }
    });
    shell.pack ();
    shell.open();
    while (!shell.isDisposed ()) {
        if (!display.readAndDispatch ()) display.sleep ();
    }
    display.dispose ();
}
}

In your case, simply set ‘event.doit‘ to false.