namespace ManagerCSharp
{
    public static class ManagedClassTest
    {
        public static void ShowValue(ref int value)
        {
            DialogResult result = MessageBox.Show("C# Message Box", "C# Message Box", MessageBoxButtons.OKCancel);
            if (result == DialogResult.OK)
                value = 1;
            else
                value = 2;
            return;
        }
    }
}

##</code><code>##

public ref class CSharpClass
{
public:
	void ShowCSharpMessageBox(int *value)
	{
		ManagerCSharp::ManagedClassTest::ShowValue(*value);
		return;
	}
}

__declspec(dllexport) void __stdcall ShowMessageBox2(int *value)
{
	CSharpClass myCSharp;
	myCSharp.ShowCSharpMessageBox(value);
}

##</code><code>##

use strict;
use Win32::API;

Win32::API->Import('ManagedCPP.dll', 'void __stdcall ShowMessageBox2(int *value);');

my $result;
ShowMessageBox2(\$result);