title: QSortFilterProxyModel and the slot setFilterFixedString
body: <p>I currently have a search button and I would like to search a specific column of my model.Thus I just want the matching rows to be displayed in my tableview.
  I have attached a QSortFilterProxyModel* object as a source to the table view and have set a QStandardItemModel* as its source. Then with my search button I made the following connection</p>
  
  <pre><code>QObject::connect(ui.lineEditSearch,SIGNAL(textChanged(QString)),proxyModelFilter,SLOT(setFilterFixedString(QString)));
  </code></pre>
  
  <p>Now I was under the impression that upon typing the relevant rows will be returned. Then I realized that I havent specified as to which columns I want the filter proxy model to search.
  I understand that I could implement a class that inherits from QSortFilterProxyModel and re implement its filterAcceptsRow. I wanted to know if there was a way for me to avoid creating a class that inherits from QSortFilterProxyModel and simply use the QSortFilterProxyModel class only to tell which columns to search on when the Slot setFilterFixedString is called ?</p>