title: Quadratic JPanel in GridBagLayout
body: <p>Basicly i've got this setup</p>
  
  <pre><code>    | JFrame with BorderLayout   |
      | -------------------------- |
      | JPanel with GridBagLayout  |
      | JPanel with NullLayout     |
  </code></pre>
  
  <p>The JFrame is resizable. The JPanel with GridBagLayout contains itselt gain JPanels and looks basicly like this</p>
  
  <pre><code>    |Obj|Obj|Obj|
      |Obj|Obj|Obj|
      |Obj|Obj|Obj|
  </code></pre>
  
  <p>The Grid should be quadratic.</p>
  
  <p>If I resize the window, the components will be adjusted automaticly and because of this, the Grid looses it's qudratic dimension and becomes an rectangel.</p>
  
  <p>I can prevent this by writing my own layout manager. So my question to you: is there another possibility to enforce a quadratic grid?</p>