How to change any multi-media key from a keyboard behavior to open a different app than the default?

Question

Based on How can I run another app when pressing the calculator key on my keyboard?

I want to know how can I achieve the same thing but for any other key.
Say I want to make the "Search" multimedia key open the software called "Everything".

Answer 1

You can achieve it for any key from the multimedia keys using the numbers described in this page.
https://web.archive.org/web/20200923183518/http://www.compiledreality.com/Home/registry-hacks/re-define-shortcut-keys-mail-home-etc

So, for this particular case, you will use number 5, search.

You edit the registry of windows adding a new key named 5 under:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AppKey\

And then add a new "String" under the new 5 key.
Name it:

ShellExecute

And make it contain the path to everything.exe
(In your case "C:\Program Files\Everything\Everything.exe")

 

It should look like this: