C# Definition:

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]  
struct OSVERSIONINFOEX {
   public int dwOSVersionInfoSize;  
   public int dwMajorVersion;  
   public int dwMinorVersion;  
   public int dwBuildNumber;  
   public int dwPlatformId;
   [MarshalAs(UnmanagedType.ByValTStr, SizeConst=128)]
   public string szCSDVersion;
   public UInt16 wServicePackMajor;  
   public UInt16 wServicePackMinor;  
   public UInt16 wSuiteMask;
   public byte wProductType;  
   public byte wReserved;

}

VB Definition:

<StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)> _

Structure OSVERSIONINFOEX

   Public dwOSVersionInfoSize As Integer
   Public dwMajorVersion As Integer
   Public dwMinorVersion As Integer
   Public dwBuildNumber As Integer
   Public dwPlatformId As Integer<MarshalAs(UnmanagedType.ByValTStr, SizeConst := 128)>
   Public szCSDVersion As String
   Public wServicePackMajor As UInt16
   Public wServicePackMinor As UInt16
   Public wSuiteMask As UInt16
   Public wProductType As Byte
   Public wReserved As Byte

End Structure 'OSVERSIONINFOEX

User-Defined Field Types:

None.

Notes:

Use the overloaded API call GetVersionEx().

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