pane.add(menuLabel, new Integer(1));
layout.addConstraint(menuLabel, RelativeLayoutConstraint.centered());
// add Version in the same layer (right, lower border)
pane.add(versionLabel, new Integer(2));
layout.addConstraint(versionLabel, RelativeLayoutConstraint.corner(WindowCorner.SouthEast, 20, 20));
// add language combo box
pane.add(languageComboBox, new Integer(4));
// layout.addConstraint(languageComboBox, RelativeLayoutConstraint.relative(0.7f, 0.5f));
layout.addConstraint(languageComboBox, RelativeLayoutConstraint.corner(WindowCorner.NorthWest, 5, 5));