gobject:type-parent (gtype)

gtype -- a derived g:type-t type ID

The parent g:type-t type ID of gtype.

Returns the direct parent type of the passed in gtype. If the passed in gtype has no parent, for example, is a fundamental type, nil is returned.

(g:type-parent "GtkWindow") => #<GTYPE :name "GtkWidget" :id 94209734120944>
(g:type-parent "GApplication") => #<GTYPE :name "GObject" :id 80>
(g:type-parent "GtkActionable") => #<GTYPE :name "GInterface" :id 8>
(g:type-parent "GObject") => NIL
(g:type-parent "gdouble") => NIL