Replaces the default window used for displaying
tooltips with @custom_window. GTK+ will take care of showing and
hiding @custom_window at the right moment, to behave likewise as
the default tooltip window. If @custom_window is %NULL, the default
tooltip window will be used.
Replaces the default window used for displaying tooltips with @custom_window. GTK+ will take care of showing and hiding @custom_window at the right moment, to behave likewise as the default tooltip window. If @custom_window is %NULL, the default tooltip window will be used.