void gtk_popover_set_relative_to ( GtkPopover* popover, GtkWidget* relative_to )
Sets a new widget to be attached to
visible, the position will be updated.
Note: the ownership of popovers is always given to their
widget, so if
relative_to is set to
NULL on an attached
will be detached from its previous widget, and consequently destroyed
unless extra references are kept.
Available since: 3.12
The argument can be
The data is owned by the caller of the method.