Function: visible-frame-list
visible-frame-list is a function defined in frame.c.
Signature
(visible-frame-list)
Documentation
Return a list of all frames now "visible" (being updated).
Source Code
// Defined in /usr/src/emacs/src/frame.c
{
Lisp_Object tail, frame, value = Qnil;
FOR_EACH_FRAME (tail, frame)
if (FRAME_VISIBLE_P (XFRAME (frame)))
value = Fcons (frame, value);
return value;
}