Composite composite_1 = new Composite(shell, SWT.NONE);
composite_1.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false, 2, 1));
composite_1.setLayout(new FillLayout(SWT.HORIZONTAL));
Button button = new Button(composite_1, SWT.NONE);
button.addMouseListener(new MouseAdapter() {
@Override
public void mouseUp(MouseEvent e) {
if(btnDeleteSubcontainerUnder!= null)
result = btnDeleteSubcontainerUnder.getSelection();
else