So basically, my idea is this:
I have a PC in one part of the room/house. This PC is on the LAN.
I have a big screen/display in another part of the room/house that is the output of my rPi. My rPi is also connected to the LAN.
Is there any way I can 'connect' the two so that as far as my PC is concerned, that big screen/display is just another monitor that it's plugged into? So I can find it as a secondary display?
This isn't quite casting. Since I need to be able to project my entire screen all the time (i.e. taskbar, wallpaper, opened apps, etc.)