public static extern NtStatus NtQuerySystemInformation(SYSTEM_INFORMATION_CLASS InfoClass, IntPtr Info, uint Size, out uint Length);

NtStatus, SYSTEM_INFORMATION_CLASS

public static IntPtr NtQuerySystemInformation(SYSTEM_INFORMATION_CLASS infoClass, uint infoLength = 0)

        result = (UInt32)NativeMethods.NtQuerySystemInformation(NativeMethods.SYSTEM_INFORMATION_CLASS.SystemMemoryListInformation, buff, result, out returnSize);

static extern UInt32 NtSetSystemInformation(NtSystemInformation.SYSTEM_INFORMATION_CLASS InfoClass, IntPtr Info, UInt32 Length);

public static void SetSystemInformation(NtSystemInformation.SYSTEM_INFORMATION_CLASS InfoClass, IntPtr Info, UInt32 Length)

public enum SYSTEM_INFORMATION_CLASS

Declare Function SYSTEM_INFORMATION_CLASS Lib "ntdll.dll" (TODO) As TODO

        result = (UInt32)NativeMethods.NtQuerySystemInformation(NativeMethods.SYSTEM_INFORMATION_CLASS.SystemMemoryListInformation, buff, result, out returnSize);

To use with an handle to a thread kernel object. (Possibly obtained by NtQuerySystemInformation with SYSTEM_INFORMATION_CLASS.SystemHandleInformation)

To use with an handle to a thread kernel object. (Possibly obtained by NtQuerySystemInformation with SYSTEM_INFORMATION_CLASS.SystemHandleInformation)