title: QTreeView middle column fill width space instead of last column
body: <p>How can do this:</p>
  
  <p><img src="https://i.stack.imgur.com/uJJbC.png" alt="middle column fill space"></p>
  
  <p>I already tried this way:</p>
  
  <pre><code>view-&gt;header()-&gt;setResizeMode(INDEX_COLUMN_SKU, QHeaderView::Interactive);
  view-&gt;header()-&gt;setResizeMode(INDEX_COLUMN_NAME, QHeaderView::Stretch);
  view-&gt;header()-&gt;setResizeMode(INDEX_COLUMN_QUANTITY, QHeaderView::Interactive);
  view-&gt;header()-&gt;setResizeMode(INDEX_COLUMN_PRICE, QHeaderView::Interactive);
  </code></pre>
  
  <p>but does not work.</p>