func (v *ListBox) Prepend(child IWidget) {
	C.gtk_list_box_prepend(v.native(), child.toWidget())
}
func (v *ListBox) Prepend(child IWidget) {
	C.gtk_list_box_prepend(v.native(), child.toWidget())
}
// Prepend is a wrapper around gtk_list_box_prepend().