title: How do I hide all columns in a treelistitem?
body: <p>I'm using the <code>HyperTreeList</code> to display a list of items with the name in the first column, and a "Remove" button in the second column. I wrote a function to filter what is displayed in the tree by some text in a <code>TextCtrl</code>. To hide the <code>TreeListItems</code>, I'm doing this:</p>
  
  <pre><code>treelist.HideItem(branch, True)
  </code></pre>
  
  <p>where treelist is a <code>HyperTreeList</code> and branch is a <code>TreeListItem</code>. The first column hides just fine, but none of the buttons in the second column hide. How do I get all columns in a <code>TreeListItem</code> to hide?</p>