title: QSpacerItem expand horizontally
body: <p>I would like my spacer item to push everything to the left. Currently this is what I do</p>
  
  <pre><code>QSpacerItem* spc = new QSpacerItem(5000000, 0, QSizePolicy::Expanding, QSizePolicy::Expanding);
  </code></pre>
  
  <p>I wanted to know what was the correct way. I am currently setting the width to a very large number.</p>