title: Remove typing cursor from combobox
body: <p>I am using an ExtJS combobox. There is a typing cursor when focusing on the combobox. I tried to implement <code>editable: false</code> when creating the combobox, but it helped only for chrome.</p>
  
  <p>Also tried <code>clearListeners()</code> function to see if this works on that cursor - didn't help, it still appears in FireFox and IE. </p>
  
  <p>The other idea is to set <code>disabled</code> on the input field in combobox. When I did it manually, it helped.</p>
  
  <p>But when I wrote the next</p>
  
  <p><code>Ext.get('bu-encodingcount-combobox').select('input').set({disabled:'disabled'});</code></p>
  
  <p>it didn't help - don't know, maybe the expression is wrong.</p>