How to retrieve file path opened by process by process PID

[zampoot]

I want to get the full path of some file opened by some process

for example multiple notepad processes are running and I got the PID for each notepad.exe process so when using

_ProcessGetPath

I get the path of notepad.exe not the file.txt which opened by process, Now how to retrieve the txt file path ?

[FireFox]

Hi,

Hope this helps : 

Br, FireFox.