how to get a file's modified date/time and size in bytes?

[SpriggsySpriggs]

I don't have my code handy right now but you need to look at the FILETIME structs in Win32 API. The functions that use that will be what you need.
I used some of that for this FTP library on the old forums.
Huge FTP Library for Windows (WinAPI) (alephc.xyz)