title: Create dropdownlist with delete button in this itemrenderer
body: <p>I works with Flex 4.5 and I like to create a custom dropdownlist. Indeed, I'd like to show in each line on my dropdownlist a label and a delete button.
  The goal is to delete the line on click to delete button.
  This look like simple, but I don't found how to do that.</p>
  
  <p>Thanks for helping</p>