File combo box in delphi

I want to have file combo box in delphi. It must behave like this:

1. If i enter C:\ in combo box, it should show all the files & folders in C: Drive
2. If i proceed further i.e., if i enter C:\Pro, then all the files & folders starting with C:\Pro should be shown in combo box.

Simply it should behave like the File Name Combox Box that will come while using save 开发者_如何学编程dialog box

I think you perhaps mean autocomplete/autosuggest, in which case try the following:

Google like edit/combo control for Delphi?

Edit:

http://msdn.microsoft.com/en-us/library/bb759862.aspx

SHAutoComplete will give file functionality - check out this article