Creating a Win32 dll (from VB6.0 to C++.Net)

[dee-u]

I am trying to make a Win32 using C++.Net. Below is my code in VB6.0.

Public Function PokerGetPercentage(pocket As String, board As String, opponents As Long, accuracy As Long) As String
    Dim sPocket As String
    Dim sBoard  As String
    Dim result  As String
    
    Dim Poker   As PokerHand
    Set Poker = New PokerHand
    
    sPocket = StrConv(pocket, vbUnicode)
    sBoard = StrConv(board, vbUnicode)
    
    result = Poker.GetHandStrength(sPocket, sBoard, opponents, accuracy)
    PokerGetPercentage = StrConv(result, vbFromUnicode)
End Function

Thus far this is what I came up with.

extern LPSTR PokerGetPercentage(LPSTR pocket, LPSTR board, long opponents , long accuracy )
{
	return "ss";
}

My C++ is very basic and I find it difficult to convert my VB6.0 code to C++. Could anyone help? Poker is actually a class from a C# project.

Thanks for any help.