frameset-switch-to-gui-p

frameset-switch-to-gui-p is a compiled Lisp function in `frameset.el'.

(frameset-switch-to-gui-p PARAMETERS)

True when switching to a graphic display.
Return non-nil if the parameter alist PARAMETERS describes a frame on a
text-only terminal, and the frame is being restored on a graphic display;
otherwise return nil. Only meaningful when called from a filtering
function in `frameset-filter-alist'.