How to call a Visual Basic ActiveX DLL to send mail

MORE INFORMATION

1. Open a new Visual Basic ActiveX DLL Project.
2. Save the Project as Project2 and the Class as Class1.
3. Make sure that the Name property in the Properties section of the project is also Project2.
4. Make sure your project has a reference to Microsoft CDO (1.1, 1.2, 1.21) Library.
5. Place the following code in a class module in Project2.

   Public Function sendmail(Recip As String, Subject As String)
      Dim osession As MAPI.Session
      Dim omessage As Message
      Dim oRecip As Recipient
      
      Set osession = CreateObject("MAPI.Session")
      osession.Logon
      Set omessage = osession.Outbox.Messages.Add
      omessage.Subject = Subject
      Set oRecip = omessage.Recipients.Add(Recip)
      oRecip.Resolve
      omessage.Text = "Testing"
      
      omessage.Send , True
      osession.Logoff
   End Function
   
   					

   The following C code (Win 32 Application) is used to create and call the ActiveX DLL.

   // activexdll1.cpp : Defines the entry point for the application.
   // 
   
   #include "stdafx.h"
   #include <objbase.h>
   
   // Change to include your DLL
   
   #import "Project2.dll" no_namespace
   
   int APIENTRY WinMain(HINSTANCE hInstance,
                        HINSTANCE hPrevInstance,
                        LPSTR     lpCmdLine,
                        int       nCmdShow)
   {
   
   // Initialize COM
   
      CoInitialize(NULL);
   
      //  Change to the name of the person 
      //  you wish to send the message
   
      _variant_t name ("alias");
      _variant_t subject ("Testing ActiveX DLL");
      
      // Create an instance of the ActiveX object
      // Where Class1 is the class module of your Project2
    
      _Class1Ptr oDLL("Project2.Class1");
   
      oDLL->sendmail(&name.bstrVal,&subject.bstrVal);
      oDLL = NULL;
      CoUninitialize();
     
      return 0;
   }