Batch make running fullscreen app go into windowed mode

[pditty8811]

What command do I use to make a running fullscreen program go into windowed mode? Not launch the program, but a program that is already running.

I'd like to know the commands to make from fullscreen to windowed, and back from windowed to fullscreen.

Thanks.

Is this possible?

[Adrianvdh]

AFAIK, No, not at all.