title: QtRuby connect signals and slots with parameters/arguments
body: <p>I would like to know how I can connect to a signal that take parameters (using Ruby blocks).</p>
  
  <p>I know how to connect to one which does not take parameters:</p>
  
  <pre><code>myCheckbox.connect(SIGNAL :clicked) { doStuff }
  </code></pre>
  
  <p>However, this does not work:</p>
  
  <pre><code>myCheckbox.connect(SIGNAL :toggle) { doStuff }
  </code></pre>
  
  <p>It doesn't work because the toggle slot take a parameter <code>void QAbstractButton::toggled ( bool checked )</code>.  How can I make it work with parameters?</p>
  
  <p>Thanks.</p>