[winswitch] Question: How does Xpra communicate with X11-apps?

[Olbert, Nils]

Hello Mr. Martin,

thanks for your detailed answer.

One last question: what happens when you set up Xpra to forward a full desktop, like "xpra start-desktop --start-child=fvwm". As X11 only allows one window manager at a time I wonder how this is done - if Xpra acts a compositing window manager and fvwm is launched  two window managers would run simultaneously.
I guess a nested x server (like Xnest or Xephyr) is used in this case, am I correct?

Thanks again,

Nils