I'd like to create a virtual monitor driver for OS X. What I mean by virtual is a monitor driver that does not drive an attached monitor, yet fools OS X into thinking there is such a monitor attached.
The purpose? It can tunnel display data to some other device over some other protocol, say VNC.
I believe this has been done before in one form or another (perhaps those apps that turn your iPad into a secondary display).
Any coding/kernel hackery pointers on this would be appreciated!