Write DLL in VB.NET for C++

[Erdenemandal]

Hallo

 

I am working in VB.NET, and I want to write a DLL for Visual C++. It works in VB.net (Create a DLL and use it in VB.NET) but in Visual C++, It does not recognize a function.

 

This is a code.

 

Imports System.Drawing

Public Class clsMyClass
       Private mMyName As String

       Property MyName() As String
               Get
                       MyName = mMyName
               End Get
               Set(ByVal Value As String)
                       mMyName = Value
               End Set
       End Property

       Public Function GetDate() As String
               ' Return today's date
               Return "Today is " & Today
       End Function

       Public Sub DrawResult(ByRef Obj As Windows.Forms.Panel, _
                ByRef TotalHit As Integer, _
                ByRef RightHit As Integer, _
                ByRef FormObj As Windows.Forms.TabPage)

               Obj.Visible = False

               ' Get a Graphics object from the current form and clear its background.

               Dim gr As Graphics = FormObj.CreateGraphics

               Dim mPen As New Pen(Color.White, 2)
               Dim mPen2 As New Pen(Color.RoyalBlue.Black, 1)

               Dim TotalProzent, Total2 As Integer


               Dim rr As New Rectangle(Obj.Left, Obj.Top, Obj.Width, Obj.Height)
               gr.FillRectangle(Brushes.White, rr)
              
               TotalProzent = Int(RightHit / TotalHit * 360)

               ' Draw a green filled rectangle.

               Dim x, y, mWidth, mHeight, StartAngle, SweepAngle As Integer

               x = Obj.Left + 10
               y = Obj.Top + 10
               mHeight = Obj.Height - 20
               mWidth = Obj.Width - 20

               ' Draw a red pie (portion of an ellipse).
               Dim i, j As Integer
               For i = 0 To TotalProzent
                       gr.FillPie(Brushes.Blue, x, y, mWidth, mHeight, 0, i)
               Next


               gr.DrawPie(mPen2, x, y, mWidth, mHeight, 0, TotalProzent)

               Total2 = 360 - TotalProzent

               For i = 0 To Total2
                       gr.FillPie(Brushes.Red, x, y, mWidth, mHeight, TotalProzent, i)
               Next

               gr.DrawPie(mPen2, x, y, mWidth, mHeight, TotalProzent, Total2)
               gr.Dispose()
               
       End Sub


End Class

 

Please help me.

[Nerseus]

If this is for a managed C++ project, you're in luck! Just add a reference to the VB.NET DLL (or project, if both projects are in the same solution)!

 

If this is for unmanaged C++, you're outta luck, mostly. You can probably wrap the VB.NET code as a COM object and create/use the object from unmanged C++, but that's a LOT of work.

 

-ner

[HJB417]

If this is for a managed C++ project, you're in luck! Just add a reference to the VB.NET DLL (or project, if both projects are in the same solution)!

 

If this is for unmanaged C++, you're outta luck, mostly. You can probably wrap the VB.NET code as a COM object and create/use the object from unmanged C++, but that's a LOT of work.

 

-ner

 

You have a bit more options. Some of the things that come to mind is creating a mixed mode c++ dll, or using the gcroot template