Returns a newly allocated list of the widgets, normally labels, for
which this widget is the target of a mnemonic (see for example,
Label.setMnemonicWidget).
The widgets in the list are not individually referenced. If you
want to iterate through the list and perform actions involving
callbacks that might destroy the widgets, you
must call `g_list_foreach (result,
(GFunc)g_object_ref, NULL)` first, and then unref all the
widgets afterwards.
Returns a newly allocated list of the widgets, normally labels, for which this widget is the target of a mnemonic (see for example, Label.setMnemonicWidget).
The widgets in the list are not individually referenced. If you want to iterate through the list and perform actions involving callbacks that might destroy the widgets, you must call `g_list_foreach (result, (GFunc)g_object_ref, NULL)` first, and then unref all the widgets afterwards.