Simple Drop down list

I am trying to make a drop down list using GUI . How to make it

I think the most difficult thing in the universe to program … is a drop down list in unity

You will almost certainly have to use or base it on Eric’s free example

http://wiki.unity3d.com/index.php?title=PopupList

If you don’t like that one you should search for other examples.

Alan Turing was correct about everything except popup lists in unity