[UnmanagedFunctionPointer(CallingConvention.StdCall)]
        public delegate UInt32 SysNtOpenProcess(
            out IntPtr hProcess,
            ProcessAccessFlags processAccess,
            ref OBJECT_ATTRIBUTES objAttribute,
            ref CLIENT_ID clientid);

        [Flags]
        public enum ProcessAccessFlags : uint
        {
            All = 0x001F0FFF,
            Terminate = 0x00000001,
            CreateThread = 0x00000002,
            VirtualMemoryOperation = 0x00000008,
            VirtualMemoryRead = 0x00000010,
            VirtualMemoryWrite = 0x00000020,
            DuplicateHandle = 0x00000040,
            CreateProcess = 0x000000080,
            SetQuota = 0x00000100,
            SetInformation = 0x00000200,
            QueryInformation = 0x00000400,
            QueryLimitedInformation = 0x00001000,
            Synchronize = 0x00100000
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct OBJECT_ATTRIBUTES
        {
            public ulong Length;
            public IntPtr RootDirectory;
            public IntPtr ObjectName;
            public ulong Attributes;
            public IntPtr SecurityDescriptor;
            public IntPtr SecurityQualityOfService;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct CLIENT_ID
        {
            public IntPtr UniqueProcess;
            public IntPtr UniqueThread;
        }