Function: frame-visible-p

frame-visible-p is a function defined in frame.c.

Signature

(frame-visible-p FRAME)

Documentation

Return t if FRAME is "visible" (actually in use for display).

Return the symbol icon if FRAME is iconified or "minimized". Return nil if FRAME was made invisible, via make-frame-invisible. On graphical displays, invisible frames are not updated and are usually not displayed at all, even in a window system's "taskbar".

If FRAME is a text terminal frame, this always returns t. Such frames are always considered visible, whether or not they are currently being displayed on the terminal.

Source Code

// Defined in /usr/src/emacs/src/frame.c
{
  CHECK_LIVE_FRAME (frame);

  if (FRAME_VISIBLE_P (XFRAME (frame)))
    return Qt;
  if (FRAME_ICONIFIED_P (XFRAME (frame)))
    return Qicon;
  return Qnil;
}