title: Can't see some objects' internals in Qt Creator's Locals and Expressions debug window
body: <p>I'd like to see the member variables of objects whilst debugging in Qt Creator. I can see all of the internals of my own objects, but I can't see the members of a <code>QGraphicsView</code>, for example.</p>
  
  <p><img src="https://i.stack.imgur.com/hFv7u.png" alt="qt locals and expressions"></p>
  
  <p>I'm also curious to know why it says <code>&lt;unavailable synchronous data&gt;</code> for <code>std::map</code>. Here's a small example of that:</p>
  
  <pre><code>#include &lt;map&gt;
  #include &lt;string&gt;
  
  int main(int argc, char *argv[])
  {
      std::map&lt;int, std::string&gt; someMap;
      someMap.insert(std::make_pair(1, "cats"));
      someMap.insert(std::make_pair(2, "dogs"));
      someMap.insert(std::make_pair(3, "vlag"));
      return 0;
  }
  </code></pre>
  
  <p>My build settings are as follows:</p>
  
  <p><img src="https://i.stack.imgur.com/PebYA.png" alt="qt build settings">
  <img src="https://i.stack.imgur.com/qCJqj.png" alt="qt creator version"></p>