Summary of what im Trying to do. Use rtlGetVersion to determine the difference between windows server 2016 and 2019 using the version number such as 1803/1809 and not the latest release build version number.
Im fixing our old code that use GetVersionEx over to rltGetVersion. Most of the code was written so it was just a matter of implementing it. Using this link. How can a VB 6 app determine if it is running on Windows 10?
The issue is windows server 2016 and 19 have the same fields so determinning which one it is cant be done with this setup. Using https://en.wikipedia.org/wiki/List_of_Microsoft_Windows_versions. I know windows 2016 have version 1803 and 2019 have version 1809.
The problem I run into is using rtlGetVersion creates a struct like so. https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/content/wdm/ns-wdm-_osversioninfoexw
And the build number is as close as I can seem to get. But that changes. I was wondering if someone knows a way to get the build version and not the build number if that makes sense.
This is the code used from the first link.
'==================================================================================
' RealWinVer.bas by Cody Gray, 2016
'
' (Freely available for use and modification, provided that credit is given to the
' original author. Including a comment in the code with my name and/or a link to
' this Stack Overflow answer is sufficient.)
'==================================================================================
Option Explicit
''''''''''''''''''''''''''''''''''''''''''''''''''
' Windows SDK Constants, Types, & Functions
''''''''''''''''''''''''''''''''''''''''''''''''''
Private Const cbCSDVersion As Long = 128 * 2
Private Const STATUS_SUCCESS As Long = 0
Private Const VER_PLATFORM_WIN32s As Long = 0
Private Const VER_PLATFORM_WIN32_WINDOWS As Long = 1
Private Const VER_PLATFORM_WIN32_NT As Long = 2
Private Const VER_NT_WORKSTATION As Byte = 1
Private Const VER_NT_DOMAIN_CONTROLLER As Byte = 2
Private Const VER_NT_SERVER As Byte = 3
Private Const VER_SUITE_PERSONAL As Integer = &H200
Private Type RTL_OSVERSIONINFOEXW
dwOSVersionInfoSize As Long
dwMajorVersion As Long
dwMinorVersion As Long
dwBuildNumber As Long
dwPlatformId As Long
szCSDVersion As String * cbCSDVersion
wServicePackMajor As Integer
wServicePackMinor As Integer
wSuiteMask As Integer
wProductType As Byte
wReserved As Byte
End Type
Private Declare Function RtlGetVersion Lib "ntdll" _
(lpVersionInformation As RTL_OSVERSIONINFOEXW) As Long
''''''''''''''''''''''''''''''''''''''''''''''''''
' Internal Helper Functions
''''''''''''''''''''''''''''''''''''''''''''''''''
Private Function IsWinServerVersion(ByRef ver As RTL_OSVERSIONINFOEXW) As Boolean
' There are three documented values for "wProductType".
' Two of the values mean that the OS is a server versions,
' while the other value signifies a home/workstation version.
Debug.Assert ver.wProductType = VER_NT_WORKSTATION Or _
ver.wProductType = VER_NT_DOMAIN_CONTROLLER Or _
ver.wProductType = VER_NT_SERVER
IsWinServerVersion = (ver.wProductType <> VER_NT_WORKSTATION)
End Function
Private Function GetWinVerNumber(ByRef ver As RTL_OSVERSIONINFOEXW) As String
Debug.Assert ver.dwPlatformId = VER_PLATFORM_WIN32_NT
GetWinVerNumber = ver.dwMajorVersion & "." & _
ver.dwMinorVersion & "." & _
ver.dwBuildNumber
End Function
Private Function GetWinSPVerNumber(ByRef ver As RTL_OSVERSIONINFOEXW) As String
Debug.Assert ver.dwPlatformId = VER_PLATFORM_WIN32_NT
If (ver.wServicePackMajor > 0) Then
If (ver.wServicePackMinor > 0) Then
GetWinSPVerNumber = "SP" & CStr(ver.wServicePackMajor) & "." & CStr(ver.wServicePackMinor)
Exit Function
Else
GetWinSPVerNumber = "SP" & CStr(ver.wServicePackMajor)
Exit Function
End If
End If
End Function
Private Function GetWinVerName(ByRef ver As RTL_OSVERSIONINFOEXW) As String
Debug.Assert ver.dwPlatformId = VER_PLATFORM_WIN32_NT
Select Case ver.dwMajorVersion
Case 3
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows NT 3.5 Server"
Exit Function
Else
GetWinVerName = "Windows NT 3.5 Workstation"
Exit Function
End If
Case 4
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows NT 4.0 Server"
Exit Function
Else
GetWinVerName = "Windows NT 4.0 Workstation"
Exit Function
End If
Case 5
Select Case ver.dwMinorVersion
Case 0
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows 2000 Server"
Exit Function
Else
GetWinVerName = "Windows 2000 Workstation"
Exit Function
End If
Case 1
If (ver.wSuiteMask And VER_SUITE_PERSONAL) Then
GetWinVerName = "Windows XP Home Edition"
Exit Function
Else
GetWinVerName = "Windows XP Professional"
Exit Function
End If
Case 2
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows Server 2003"
Exit Function
Else
GetWinVerName = "Windows XP 64-bit Edition"
Exit Function
End If
Case Else
Debug.Assert False
End Select
Case 6
Select Case ver.dwMinorVersion
Case 0
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows Server 2008"
Exit Function
Else
GetWinVerName = "Windows Vista"
Exit Function
End If
Case 1
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows Server 2008 R2"
Exit Function
Else
GetWinVerName = "Windows 7"
Exit Function
End If
Case 2
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows Server 2012"
Exit Function
Else
GetWinVerName = "Windows 8"
Exit Function
End If
Case 3
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows Server 2012 R2"
Exit Function
Else
GetWinVerName = "Windows 8.1"
Exit Function
End If
Case Else
Debug.Assert False
End Select
Case 10
If IsWinServerVersion(ver) Then
GetWinVerName = "Windows Server 2016"
Exit Function
Else
GetWinVerName = "Windows 10"
Exit Function
End If
Case Else
Debug.Assert False
End Select
GetWinVerName = "Unrecognized Version"
End Function
''''''''''''''''''''''''''''''''''''''''''''''''''
' Public Functions
''''''''''''''''''''''''''''''''''''''''''''''''''
' Returns a string that contains the name of the underlying version of Windows,
' the major version of the most recently installed service pack, and the actual
' version number (in "Major.Minor.Build" format).
'
' For example: "Windows Server 2003 SP2 (v5.2.3790)" or
' "Windows 10 (v10.0.14342)"
'
' This function returns the *real* Windows version, and works correctly on all
' operating systems, including Windows 10, regardless of whether or not the
' application includes a manifest. It calls the native NT version-info function
' directly in order to bypass compatibility shims that would otherwise lie to
' you about the real version number.
Public Function GetActualWindowsVersion() As String
Dim ver As RTL_OSVERSIONINFOEXW
ver.dwOSVersionInfoSize = Len(ver)
If (RtlGetVersion(ver) <> STATUS_SUCCESS) Then
GetActualWindowsVersion = "Failed to retrieve Windows version"
End If
' The following version-parsing logic assumes that the operating system
' is some version of Windows NT. This assumption will be true if you
' are running any version of Windows released in the past 15 years,
' including several that were released before that.
Debug.Assert ver.dwPlatformId = VER_PLATFORM_WIN32_NT
GetActualWindowsVersion = GetWinVerName(ver) & " " & GetWinSPVerNumber(ver) & _
" (v" & GetWinVerNumber(ver) & ")"
End Function
