title: How to select a QTableWidget cell containing a button
body: <p>I have a question regarding QTableWidget at PyQt4. Say I have a QTableWidget, where I want to have an event connected to a cell click using:</p>
  
  <pre><code>table.cellClicked.connect(cellClick)
  </code></pre>
  
  <p>then, <em>cellClick</em> function does its job. The thing is: some cells contain a button, like so (coordinates 0,0 as an example):</p>
  
  <pre><code>button = QtGui.QPushButton()
  table.setCellWidget(0,0, button)
  </code></pre>
  
  <p>Now comes my problem. The presence of the button in a cell (which takes up the entire cell space) completely disables the <em>cellClicked</em> - the cell doesn't get clicked, the action can't be detected. But I do want my button to fill the cell. </p>
  
  <p>So, in short, my question is - how can I select (click) a QTableWidget cell when there's a button inside it?</p>