mapa4, thank you for your answer.
I also already thought about AutoHotkey to be a reasonable tool to make a workaround, but unfortunately I have almost no knowlage about it's syntax and commands. I only used it for very simple tasks so far and never had to target a specific window or stuff like that. But clicking through several pages, there seems to be good documentation.
Nevertheless, learning AutoHotkey is a bit over the top for my task. So maybe I'll get it to work with your code snippet and a lot of botching from me or I could try to ask someone in the AutoHotkey forums. Shouldn't take too long for some nice person who is in practice.
/edit1
by the way, the Everything documentation says
-path <path>
Search for a path.
-parentpath <path>
Search for the parent of a path.
So
-parentpath is searching
C:\ when I am in
C:\temp\ ? That could be useful for me, too! E.g. with a modified hotkey like Ctrl+Shift+F
/edit2
I was looking around a bit in this forum and decided to make a new post in the suggestions section about the topic, because I consider this to be a basic function (useful to everybody) which should be provided by default (compare the many shortcuts already present and even global shortcuts are already implemented). Don't know what you were used to in the past, but for me a search in the current folder was just a ctrl+F away.
/edit3
ok, forget about edit1, I think I was wrong concerning the functionality of
-parentpath. But the documentation is not very detailed here
