GtkImage API question

[jrb redhat com]

Is there any reason that void gtk_image_set_from_stock and
gtk_image_set_from_icon_set both take a char * for their size argument
instead of an enum.  This is different from the rest of GTK+, and makes
finding the size to set harder (ie, I can't just look in gtkenums.h -- I
have to look around the headers before I find it in gtkiconfactory.h, of
all places.)

Any objection if I change it into an enum?

Thanks,
-Jonathan