Send commands and events to a LibGGI visual
int ggiEventSend(ggi_visual_t vis, gii_event *ev);
ggiEventSend injects an event into the queue.
CONTROLLING VT SWITCHING BEHAVIOR
If an application wants to continue running after its VT is switched
away, it should make a call ggiEventSend to the visual with an
evCommand event with code GGICMD_NOHALT_ON_UNMAP. To disable this
behavior, use a command event with code GGICMD_HALT_ON_UNMAP. The
latter is the default.