title: QObject cloning
body: <p>I know that Qobjects are supposed to be identities not values eg you cannot copy them and by default the copy constructor and assignment are disabled as explained in qt documentation. But is it possible to create a new QObject from an existing one using a clone method? Would this be a logic error ?
  If I say </p>
  
  <pre><code>QObject b; 
  QObject a; 
  b.cloneFrom(a);
  </code></pre>
  
  <p>or </p>
  
  <pre><code>QObject a = new QOBject();
  QObject b = new QOBject();
  b-&gt;cloneFrom(a);
  </code></pre>
  
  <p>and the clone method copies stuff like members etc would this be wrong?</p>
  
  <p>And if this is ok can I write my own copy constructor and assignment operator that does just that?</p>
  
  <p>Note: I actually want to try this with classes that inherit qobject.</p>