Give focus to a Window launched from a system service using CreateProcessAsUser

Question

I have a System service that launch an application using the method CreateProcessAsUser.

This service uses impersonation to launch the app in the active se

Answer 1

Let your application register a (carefully chosen) HotKey via RegisterHotKey and then simulate the key via SendInput

In the processing of the WM_HOTKEY message, you should be able to "steal the focus".

Remenber: It's BAD to steal focus, but I fully understand the "what my client is asking!" part.