func (v *Notebook) GetNthPage(pageNum int) (*Widget, error) {
	c := C.gtk_notebook_get_nth_page(v.native(), C.gint(pageNum))
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapWidget(glib.Take(unsafe.Pointer(c))), nil
}
func (v *Notebook) GetNthPage(pageNum int) (*Widget, error) {
	c := C.gtk_notebook_get_nth_page(v.native(), C.gint(pageNum))
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapWidget(glib.Take(unsafe.Pointer(c))), nil
}
// GetNthPage() is a wrapper around gtk_notebook_get_nth_page().