In Windows, as long as a video is playing via the media player, the screensaver won’t start. I have a technical animation in WPF running on a digital signage system, and I am searching for ways, that Windows behaves similar as while playing a video in the media player (no screensaver activation etc.).

Brute force solutions work, like sending a keyboard event or a mouse move event as in Interrupt an active screensaver programmatically?. However those are pretty hard workarounds.

I would assume there is a special message (like WM_ACTIVATE) to be sent to the Windows message queue via the Windows32 API, while a video or an animation is playing to notice the OS about it. Google and checking winuser.h did not yield results. Has anybody an idea? Thank’s a lot!