Had not Dllimport in D?

[xky via Digitalmars-d-learn]

First, I really sorry my bad english.

I just want to using Ruby dll file(msvcrt-ruby220.dll).
In the case of C#,
================================================================================
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using INT = System.Int32;
namespace RubyTest01
{
  static class Ruby
  {
    public const string RubyDll = "msvcrt-ruby18";

    [DllImport(RubyDll)]
    public static extern void ruby_init();

    [DllImport(RubyDll)]
    public static extern INT rb_eval_string_protect(byte[] 
script, ref INT state);

     public static INT rb_eval_string_protect(string script, ref 
INT state)
     {
        return 
rb_eval_string_protect(Encoding.UTF8.GetBytes(script + '\0'), ref 
state);
    }

}

class Program
{
  static void Main(string[] args)
  {
    INT state = 0;
    Ruby.ruby_init();
    Ruby.rb_eval_string_protect("open('test.txt', 'w') {| fp| 
fp.write(\"Hello World!\\n\")}", ref state);

  }
}
================================================================================

I guess D had something like it, but i don't know how to do it.
Thx!