title: gxt (ext gwt) Grid and column width
body: <p>I am trying to create a grid that fills the width of a <code>ContentPanel</code>. The grid should have two columns of equal size that span the entire width of the grid. Resizing the browser window should update the grid size accordingly. I would expect the code below to accomplish this, but the grid does not grow on browser resize and there is a <code>~15px</code> gap between the second column and the right edge of the grid.</p>
  
  <p>Any ideas?</p>
  
  <pre class="lang-java prettyprint-override"><code>public class MyGrid extends ContentPanel {
  
  @Override
  protected void onRender(Element parent, int index) {
      super.onRender(parent, index);
  
      setLayout(new FillLayout());
      ColumnConfig c1 = new ColumnConfig("value","value", 50);
      ColumnConfig c2 = new ColumnConfig("value1","value1", 50);
      ListStore&lt;ModelData&gt; store = new ListStore&lt;ModelData&gt;();
      for (int i=0; i&lt;10; i++) {
        BaseModelData data = new BaseModelData();
        data.set("value", "value");
        data.set("value1", "value1");
        store.add(data);
      }
      Grid&lt;ModelData&gt; grid = new Grid&lt;ModelData&gt;(store, new ColumnModel(Arrays.asList(new ColumnConfig[] {c1, c2})));
      grid.setAutoHeight(true);
      grid.setAutoWidth(true);
      grid.getView().setAutoFill(true);
      add(grid); 
  }
  </code></pre>
  
  <p>}</p>