Add a label and use a grabby hand cursor when hovering over a screen when there are
more than one.
This is against the laws of Physics.
It would, but:
connect (m_config.get(), &ConfigHandler::outputModelChanged, this, &KCMKScreen::outputModelChanged);
which gets emitted in
A new screen would be a new config.
I think output model is the same object, but it would retrigger this evaluation.