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!