Проверьте этот пример консольного приложения vb.net, которое использует функцию SLIsGenuineLocal
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Imports System.Collections.Generic
Imports System.Text
Imports System.Runtime.InteropServices
Imports SLID = System.Guid
Module Module1
Public Enum SL_GENUINE_STATE
SL_GEN_STATE_IS_GENUINE = 0
SL_GEN_STATE_INVALID_LICENSE = 1
SL_GEN_STATE_TAMPERED = 2
SL_GEN_STATE_LAST = 3
End Enum
<DllImportAttribute("Slwga.dll", EntryPoint:="SLIsGenuineLocal", CharSet:=CharSet.None, ExactSpelling:=False, SetLastError:=False, PreserveSig:=True, CallingConvention:=CallingConvention.Winapi, _
BestFitMapping:=False, ThrowOnUnmappableChar:=False)> _
<PreserveSigAttribute()> _
Friend Function SLIsGenuineLocal(ByRef slid As SLID, <[In](), Out()> ByRef genuineState As SL_GENUINE_STATE, ByVal val3 As IntPtr) As UInteger
End Function
Public Function IsGenuineWindows() As Boolean
Dim _IsGenuineWindows As Boolean = False
Dim ApplicationID As New Guid("55c92734-d682-4d71-983e-d6ec3f16059f")
'Application ID GUID http://technet.microsoft.com/en-us/library/dd772270.aspx
Dim windowsSlid As SLID = CType(ApplicationID, Guid)
Try
Dim genuineState As SL_GENUINE_STATE = SL_GENUINE_STATE.SL_GEN_STATE_LAST
Dim ResultInt As UInteger = SLIsGenuineLocal(windowsSlid, genuineState, IntPtr.Zero)
If ResultInt = 0 Then
_IsGenuineWindows = (genuineState = SL_GENUINE_STATE.SL_GEN_STATE_IS_GENUINE)
Else
Console.WriteLine("Error getting information {0}", ResultInt.ToString())
End If
Catch ex As Exception
Console.WriteLine(ex.Message)
End Try
Return _IsGenuineWindows
End Function
Sub Main()
If Environment.OSVersion.Version.Major >= 6 Then
'Version 6 can be Windows Vista, Windows Server 2008, or Windows 7
If IsGenuineWindows() Then
Console.WriteLine("Original Windows")
Else
Console.WriteLine("Not Original Windows")
End If
Else
Console.WriteLine("OS Not supoprted")
End If
Console.ReadLine()
End Sub
End Module