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Tip of the Day
Language: VB4/32,VB5,VB6
Expertise: Intermediate
Mar 18, 2000

WindowsVersionSP - Determine Windows version and NT service pack info

Private Type OSVERSIONINFO
    dwOSVersionInfoSize As Long
    dwMajorVersion As Long
    dwMinorVersion As Long
    dwBuildNumber As Long
    dwPlatformId As Long
    szCSDVersion As String * 128
End Type
Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" _
    (lpVersionInformation As OSVERSIONINFO) As Long

' Returns Version of Windows as a String
' NOTE: Win95 returns "4.00", WIn98 returns "4.10"
'
' It also optionally returns the Windows NT Service Pack
' version in the argument, if one is passed

Function WindowsVersionSP(Optional NTServicePack As Integer) As String
    Dim osInfo As OSVERSIONINFO
    osInfo.dwOSVersionInfoSize = Len(osInfo)
    GetVersionEx osInfo
    WindowsVersionSP = osInfo.dwMajorVersion & "." & Right$( "0" & Format$ _
        (osInfo.dwMinorVersion), 2)
  
    If osInfo.dwMajorVersion = 4 Then
        If InStr(osInfo.szCSDVersion, "3") > 0 Then
            NTServicePack = 3
        ElseIf InStr(osInfo.szCSDVersion, "4") > 0 Then
            NTServicePack = 4
        ElseIf InStr(osInfo.szCSDVersion, "5") > 0 Then
            NTServicePack = 5
        ElseIf InStr(osInfo.szCSDVersion, "6") > 0 Then
            NTServicePack = 6
        Else
            NTServicePack = 0
        End If
    End If
End Function

Colin McNulty
 
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