สอบถามเกี่ยวกับการเขียน Dll ด้วย Vb.net แล้วนำไปให้ C++ เรียกใช้งาน

Imports System.Runtime.InteropServices
Imports System.Globalization

<ComVisible(True)> _
<Guid(DateManager.InterfaceId)> _
Public Interface IDate
    Function FormatDate(ByVal DateValue As String, ByVal sFormat As String, Optional ByVal sCultureInfo As String = "th-TH") As String
End Interface
<XXXComVisible(True)> _
<XXXGuid(DateManager.ClassId)> _
<XXXtInterface(GetType(IDate))> _
Public Class DateUnmanageCodeing
    Implements IDate

#Region "COM GUIDs"
    Public Const ClassId As String = "หอย-D1E5-4d7b-B642-DBC565563B27"
    Public Const InterfaceId As String = "หอย-1184-428b-883A-B7F8C7370C8F"
    Public Const EventsId As String = "หอย-57FB-427a-90E2-6E8DDCA57E3B"
#End Region

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