title: How do you check a checkbox without firing a change event?
body: <p>I have simple checkbox:</p>
  
  <pre class="lang-js prettyprint-override"><code>r = new Ext.form.Checkbox({
      listeners: {
          check: function(checkbox, checked) {
          }
      }
  }
  
  r.setValue(true);
  </code></pre>
  
  <p>How to check checkbox without fireevent check ( I want to fireevent check ONLY from mouse click ) ? (setValue doesn't work ).</p>