delete_key

# File ext/dl/win32/lib/win32/registry.rb, line 778
    def delete_key(name, recursive = false)
      if recursive
        open(name, KEY_ALL_ACCESS) do |reg|
          reg.keys.each do |key|
            begin
              reg.delete_key(key, true)
            rescue Error
              #
            end
          end
        end
        API.DeleteKey(@hkey, name)
      else
        begin
          API.EnumKey @hkey, 0
        rescue Error
          return API.DeleteKey(@hkey, name)
        end
        raise Error.new(5) ## ERROR_ACCESS_DENIED
      end
    end