title: Disable ENTER key event in extjs 3.4 combo
body: <p>I am using extjs 3.4. i need to disable ENTER key event for the combo. I tried with following code but could not succeed. Please help.</p>
  
  <pre><code>var combo = new Ext.form.comboBox({
    id: 'id',
    enableKeyEvents: true,
    store: store,
    triggerAction: 'all',
    listeners: {
     keydown: function(combo, e) {
       var key = e.getKey();
       if (key == e.ENTER) {
         e.stopEvent();
       }
     }
    }
  });
  </code></pre>
  
  <p>The above does not work. Still enter event works for combo. Please help.</p>