title: How to disable filtering option for a QTreeView or Model
body: <p>I am having a piece of code which deals with two QTreeView, where the items are added from left tree view to the right tree view. Here is a part of code:</p>
  
  <pre><code>MasterModel *model = new MasterModel;
  leftProxyFilterModel *leftModel = new leftProxyFilterModel;
  rightSelectedRowsFiletrModel *rightModel = new rightSelectedRowsFilterModel;
  
  QTreeView *leftTreeView;
  QTreeView *rightTreeView;
  
  leftModel-&gt;setSourceModel(model);
  rightModel-&gt;setSourceModel(leftModel);
  
  leftTreeView-&gt;setModel(leftModel);
  rightTreeView-&gt;setModel(rightModel);
  </code></pre>
  
  <p>Now for filtering some strings are set like this:</p>
  
  <pre><code>leftModel-&gt;setFilterWildcard(LineEdit-&gt;text());
  </code></pre>
  
  <p>This line is Filtering the contents of both the tree views, what I want is filtering option should be applicable only for left tree view.
  Can someone help me to achieve this???</p>