ExtJS多选组合框

Question

I'm using ExtJS 2.3.0 and am looking for a combo box that allows mulitple selection, ie the equivalent of

<select multiple="multiple" name="langs">
  <option value="">Groovy</option>
  <option value="ct1">VB</option>
  <option value="ct2">Lisp</option>
</select>

I've looked through the API docs and found a ComboBox class, but can't see how to turn on multiple selection.

Update

I chose this 3rd party component, though this one looks a lot fancier

Answer 1

ExtJS forum lists at least a few possibilities but they're plugins:

Multiselect combo boxes