You could use an array. Here is an example:

This is the managed C++ code. We want 'Compute' to return 2 and 3.

#pragma once
using namespace System;
namespace DLLManagedRef
{
   public __gc class test
   {
       public:
       void Compute( int no1, int no2 __gc[], int no3 __gc[] )
       {
           no2[0] = 2;
           no3[0] = 3;
       }
   };
}

In J#.net, add a reference to the managed C++ DLL, and write:

public class Class1
{
   public Class1()
   {
       int two[] = new int[1];
       int three[] = new int[1];

       DLLManagedRef.test test = new DLLManagedRef.test();
       test.Compute( 1, two, three );

       System.Console.WriteLine("Param two: "+two[0]);
       System.Console.WriteLine("Param three: "+three[0]);
   }

   /** @attribute System.STAThread() */
   public static void main(String[] args)
   {
       new Class1();
   }
}

Lars-Inge T?nnessen
www.larsinge.com