title: How to delete grey borders
body: <pre class="lang-java prettyprint-override"><code>import com.smartgwt.client.widgets.layout.HLayout;
  import com.smartgwt.client.widgets.tree.TreeGrid;
  
  HLayout layout = new HLayout();
  TreeGrid treeGrid = new TreeGrid();
  
  layout.setMembersMargin(0);
  layout.setBorder("0 none");
  layout.setPaddingAsLayoutMargin(false);
  layout.setLayoutMargin(0);
  layout.setCanDragResize(false);
  for (Canvas canvas : layout.getMembers()) {
    canvas.setMargin(0);
    canvas.setPadding(0);
    canvas.setBorder("0 none");
    canvas.setWidth("100%");
    canvas.setHeight("100%");
  }
  treeGrid.setMargin(0);
  treeGrid.setBorder("0 none");
  </code></pre>
  
  <p>I have tried all these methods and border are still around the <code>treeGrid</code> which is in <code>layout</code>.<br/>
  How to delete or tell SmartGWT to <strong>not generate</strong> these grey borders we can see between blue and green borders ? <br/> 
  Or there is a component without these borders ?</p>
  
  <p><img src="https://i.stack.imgur.com/HttNA.png" alt="Illustrate borders problem"></p>