Function: frame-child-frame-border-width

frame-child-frame-border-width is a function defined in frame.c.

Signature

(frame-child-frame-border-width &optional FRAME)

Documentation

Return width of FRAME's child-frame border in pixels.

 If FRAME's child-frame-border-width parameter is nil, return FRAME's
 internal border width instead.

Source Code

// Defined in /usr/src/emacs/src/frame.c
{
  int width = FRAME_CHILD_FRAME_BORDER_WIDTH (decode_any_frame (frame));

  if (width < 0)
    return make_fixnum (FRAME_INTERNAL_BORDER_WIDTH (decode_any_frame (frame)));
  else
    return make_fixnum (FRAME_CHILD_FRAME_BORDER_WIDTH (decode_any_frame (frame)));
}