title: something like google suggest example
body: <p>i have a <code>qlineEdit</code> and a <code>QListWidget</code> i want to have something like google suggestion, when user type a text, i want to display only items with text starting with that text, but i don't know how should i do that? i think i should write a searchbox but i should call it every time user insert or delete character, i don't know if there is a better idea?</p>
  
  <pre><code>SearchBox(QWidget *parent = 0);
  </code></pre>
  
  <p>or is there any sample in examples like this? </p>
  
  <p>thank you in advance</p>