toggle_button vs check_menu_item

[rowe excc ex ac uk]

It would seem we have gtk_toggle_button_set_active and
gtk_check_menu_item_set_active (and similarly for _toggled) but
no general routine that will take either type of argument.
This does not seem very object orientated! Have I missed some
routine with a name close to but not the same as
gtk_widget_set_active? 

If not, do we not need one? Since *I* need one and am going to
write it anyway would it be sensible to include in in gtk++?

If so, there's also the choice of name, (gtk_button_set_active might
be less confusing since set_active seems to mean two different things,
cf gtk_menu_get_active).

Regards.

John