I'm working on ensuring compatibility with some legacy applications. I
need an API function that maps a (possibly virtual) path into a
physical path.

For example,

c:\program files\foo\download ---> c:\users\myusername\appdata\local
\virtualstore\program files\foo\download

Does Vista provide an API for retreiving these mappings? Is there a
way to determine whether a given path is virtual of physical?

Thanks,
Scott

Please bear with me, it all started when I wanted to create an
ownerdrawn combobox, eventually got it working but needed to subclass
it to findout where the mouse was, thats when the fun started - the
mouse didn't appear to feed back data when the listbox component of
the combobox was dropped down, eventually after lots of hunting I
realized that I could get the handle to the listbox part from the
combobox message WM_CTLCOLORLISTBOX - however now need to subclass the
procedure of the listbox, great the mouse feeds back all the data I
could want, but the original WM_PAINT - WM_MEASUREITEM & WM_DRAWITEM
dont work anymore, is there please anyone who can tell me how the
relationship between the two parts work so that I can finish my app.
Yours (more than a little) confused.