onMarkSet  
  fun onMarkSet(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (location: TextIter, mark: TextMark) -> Unit): <Error class: unknown class>(source)
Emitted as notification after a GtkTextMark is set.
See also: method@Gtk.TextBuffer.create_mark, method@Gtk.TextBuffer.move_mark.
Parameters
connectFlags 
a combination of ConnectFlags
handler
the Callback to connect. Params: location The location of @mark in @textbuffer; mark The mark that is set