Question

I have a .Net application (VB in particular, although I would this to be as language agnostic as possible) that uses a COM object (made in C++).

I need to implement a event in COM that passes a char array from C++ to .Net. I guess I need to convert the array to a managed array;
How can I do this?

Answer 1

This is what I was looking for:

Private Sub ComEventHandler(ByVal dataPtr As Integer, ByVal size As Integer) Handles myComObject.OnEvent
    Dim managedData(0 To size - 1) As Byte
    Dim data As IntPtr = dataPtr

    If (size = 0) Then
        Marshal.Copy(data, managedData, 0, size)
        ...
    End If
    ...
End Sub

The COM event passes the char array as it is.