get-visible-line-range

   

Returns the range of lines which are currently visible to the user.

Only valid when the buffer is viewed.

• (send a-wx:media-edit get-visible-line-range start end) -> void
      start : boxed small integer or null
      end : boxed small integer or null

  The start box is filled with first line visible to the user, unless start is null. The end box is filled with last line visible to the user, unless end is null.