Some textboxes that I use on the web have a function where they
remember the previous entries that have been typed into them, and
either show the user in the form of a dropdown or complete the spelling
of the users entry:

is there a way to use the registery to do the above?
i suppose to make a textbox dropdown the 5 most recent entries is gonna
be either impossible or involve a lot of API calls - any workaround
ideas out there?