64bit DLL works in VB.net but not in VBA

StackOverflow https://stackoverflow.com/questions/8476112

  •  14-03-2021
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Question

I have a 64 bit DLL which I want to use in VBA. The example from VB.net won't work in VBA as Int32 is not a known VBA data type. Is it possible to get this working in VBA? If so, do I have to write my own class? I'm including a few lines of the example. Thank you.

Imports System
Imports System.Runtime.InteropServices

Friend Class LinkVCMOWRAP
    Declare Function wcmo_init Lib "vcmowr64.dll" ( _
        <MarshalAs(UnmanagedType.AnsiBStr), [In]()> ByRef WCMOarg_Handle As String, _
        <MarshalAs(UnmanagedType.AnsiBStr), [In]()> ByRef WCMOarg_User As String, _
        <Out()> ByRef IntPtr_DataOut As IntPtr, _
        <Out()> ByRef IntPtr_ErrOut As IntPtr) _
            As Int32
Was it helpful?

Solution

Int32 and IntPtr aren't valid VBA data types. You'll need to rewrite the function converting the Int32 type to Long and the IntPtr type to Integer.

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