func ScrollbarNew(orientation Orientation, adjustment *Adjustment) (*Scrollbar, error) {
	c := C.gtk_scrollbar_new(C.GtkOrientation(orientation), adjustment.native())
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapScrollbar(glib.Take(unsafe.Pointer(c))), nil
}
func ScrollbarNew(orientation Orientation, adjustment *Adjustment) (*Scrollbar, error) {
	c := C.gtk_scrollbar_new(C.GtkOrientation(orientation), adjustment.native())
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapScrollbar(glib.Take(unsafe.Pointer(c))), nil
}
// ScrollbarNew is a wrapper around gtk_scrollbar_new().