func (v *Container) Add(w IWidget) {
	C.gtk_container_add(v.native(), w.toWidget())
}
func (v *Container) Add(w IWidget) {
	C.gtk_container_add(v.native(), w.toWidget())
}
func ( v * Container ) Add ( w IWidget ) { C . gtk_container_add ( v . native ( ) , w . toWidget ( ) ) }
// Add is a wrapper around gtk_container_add().
Add is a wrapper around gtk_container_add () .