title: Autocomplete AND preventing new input - combobox
body: <p>How can I allow the users of my program to type in a value and have it auto-complete, however, I also what to prevent them from entering new data because it would cause the data to be unfindable (unless you had direct access to the database).</p>
  
  <p>Does anyone know how to do this?</p>
  
  <p>The reasoning behind not using just a dropdown style combobox is because entering data by typing it is and then refusing characters that are not part of an option in the list is because it's easier on the user.</p>
  
  <p>If you have used Quickbook's Timer, that is the style of comboboxes I am going for.</p>