static WindowsSystemInformation ()
{
var osVersion = new PRTL_OSVERSIONINFOW ();
osVersion.dwOSVersionInfoSize = new UIntPtr ((uint)Marshal.SizeOf (osVersion));
RtlGetVersion (ref osVersion);
version = new Version ((int)(uint)osVersion.dwMajorVersion, (int)(uint)osVersion.dwMinorVersion, (int)(uint)osVersion.dwBuildNumber);
}
static extern int RtlGetVersion(ref PRTL_OSVERSIONINFOW version);
