[VS 2005] problem importing abstract class with interface

[Marco Segurini]

Hi,

To reproduce my problem I have created a solution with 4 projects:

1) CalledCpp - a cpp managed dll
2) CallerCpp - a cpp managed console project that depends on CalledCpp
3) CallerVB - a vb console project that depends on CalledCpp
4) CallerCS - a csharp console project that depends on CalledCpp

The main file of CalledCpp (CalledCpp.cpp) contains this code:

#include "stdafx.h"
#include "CalledCpp.h"

#define USE_INTERFACE

namespace CalledCpp
{

public interface class IoInterface
{
#if defined(USE_INTERFACE)
void read();
#endif
};

public ref class MyBase abstract : IoInterface
{
public:
static MyBase^ Create();
#if !defined(USE_INTERFACE)
virtual void read() abstract;
#endif
};

public ref class Derived : MyBase
{
public:
void read();
};

MyBase^ MyBase::Create()
{
return gcnew Derived();
}

void Derived::read()
{
System::Console::WriteLine("Derived::Read()");
}

}
/////////////////
The main file of CallerCpp (CallerCpp.cpp) contains this code:

#include "stdafx.h"

using namespace System;

int main()
{
CalledCpp::MyBase^ bas = CalledCpp::MyBase::Create();
bas->read();
}
////////////////

The main file of CallerCS (Program.cs) contains this code:

#region Using directives

using System;
using System.Collections.Generic;
using System.Text;

#endregion

namespace CallerCS
{
class Test
{
static void Main(string[] args)
{
CalledCpp.MyBase bas = CalledCpp.MyBase.Create();
bas.read();
}
}
}
//////////////////////////////
The main file of CallerVB (Module1.vb) contains this code:

Module Module1

Sub Main()
Dim bas As CalledCpp.MyBase = CalledCpp.MyBase.Create()
Call bas.read()
End Sub

End Module
////////////////////////////////////
Now, CallerCpp, CallerCS and CallerVB have a project reference to CalledCpp.

If I perform a RebuildAll only CallerCpp builds fine while CallerVB and
CallerCS build return the same error:

error CS0117: 'CalledCpp.MyBase' does not contain a definition for 'read'

If I undefine USE_INTERFACE all works fine.

TIA for any help.
Marco.
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