I'm trying to accomplish the following:
When my PC is woken from sleep with the Steam Controller, it lunches directly into Steam Big Picture Mode, without showing the Windows desktop first.
Ideally I'd like to be able to exit from Steam BPM back into Windows desktop, without having to start explorer.exe manually. So explorer.exe should be running in the background, I think.
Could anybody suggest how I could go about this?
You could attach a script to the wake-up event, then have your script check wake-up source and if it's Steam controller, launch Steam in Big Picture mode.
This is general outline. The burden of implementation, falls on your shoulders.