NetGroupAdd

// NETAPI32.dll
#include <windows.h>

DWORD NetGroupAdd(
    LPCWSTR servername,   // optional
    DWORD level,
    BYTE* buf,
    DWORD* parm_err   // optional
);

<DllImport("NETAPI32.dll", ExactSpelling:=True)>
Public Shared Function NetGroupAdd(
    <MarshalAs(UnmanagedType.LPWStr)> servername As String,   ' LPCWSTR optional
    level As UInteger,   ' DWORD
    buf As IntPtr,   ' BYTE*
    parm_err As IntPtr   ' DWORD* optional, out
) As UInteger
End Function

' servername : LPCWSTR optional
' level : DWORD
' buf : BYTE*
' parm_err : DWORD* optional, out
Declare PtrSafe Function NetGroupAdd Lib "netapi32" ( _
    ByVal servername As LongPtr, _
    ByVal level As Long, _
    ByVal buf As LongPtr, _
    ByVal parm_err As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

NetGroupAdd = ctypes.windll.netapi32.NetGroupAdd
NetGroupAdd.restype = wintypes.DWORD
NetGroupAdd.argtypes = [
    wintypes.LPCWSTR,  # servername : LPCWSTR optional
    wintypes.DWORD,  # level : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # buf : BYTE*
    ctypes.POINTER(wintypes.DWORD),  # parm_err : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('NETAPI32.dll')
NetGroupAdd = Fiddle::Function.new(
  lib['NetGroupAdd'],
  [
    Fiddle::TYPE_VOIDP,  # servername : LPCWSTR optional
    -Fiddle::TYPE_INT,  # level : DWORD
    Fiddle::TYPE_VOIDP,  # buf : BYTE*
    Fiddle::TYPE_VOIDP,  # parm_err : DWORD* optional, out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "netapi32")]
extern "system" {
    fn NetGroupAdd(
        servername: *const u16,  // LPCWSTR optional
        level: u32,  // DWORD
        buf: *mut u8,  // BYTE*
        parm_err: *mut u32  // DWORD* optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("NETAPI32.dll")]
public static extern uint NetGroupAdd([MarshalAs(UnmanagedType.LPWStr)] string servername, uint level, IntPtr buf, IntPtr parm_err);
"@
$api = Add-Type -MemberDefinition $sig -Name 'NETAPI32_NetGroupAdd' -Namespace Win32 -PassThru
# $api::NetGroupAdd(servername, level, buf, parm_err)

#uselib "NETAPI32.dll"
#func global NetGroupAdd "NetGroupAdd" sptr, sptr, sptr, sptr
; NetGroupAdd servername, level, varptr(buf), varptr(parm_err)   ; 戻り値は stat
; servername : LPCWSTR optional -> "sptr"
; level : DWORD -> "sptr"
; buf : BYTE* -> "sptr"
; parm_err : DWORD* optional, out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "NETAPI32.dll"
#cfunc global NetGroupAdd "NetGroupAdd" wstr, int, var, var
; res = NetGroupAdd(servername, level, buf, parm_err)
; servername : LPCWSTR optional -> "wstr"
; level : DWORD -> "int"
; buf : BYTE* -> "var"
; parm_err : DWORD* optional, out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; DWORD NetGroupAdd(LPCWSTR servername, DWORD level, BYTE* buf, DWORD* parm_err)
#uselib "NETAPI32.dll"
#cfunc global NetGroupAdd "NetGroupAdd" wstr, int, var, var
; res = NetGroupAdd(servername, level, buf, parm_err)
; servername : LPCWSTR optional -> "wstr"
; level : DWORD -> "int"
; buf : BYTE* -> "var"
; parm_err : DWORD* optional, out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	netapi32 = windows.NewLazySystemDLL("NETAPI32.dll")
	procNetGroupAdd = netapi32.NewProc("NetGroupAdd")
)

// servername (LPCWSTR optional), level (DWORD), buf (BYTE*), parm_err (DWORD* optional, out)
r1, _, err := procNetGroupAdd.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(servername))),
	uintptr(level),
	uintptr(buf),
	uintptr(parm_err),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function NetGroupAdd(
  servername: PWideChar;   // LPCWSTR optional
  level: DWORD;   // DWORD
  buf: Pointer;   // BYTE*
  parm_err: Pointer   // DWORD* optional, out
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'NetGroupAdd';

result := DllCall("NETAPI32\NetGroupAdd"
    , "WStr", servername   ; LPCWSTR optional
    , "UInt", level   ; DWORD
    , "Ptr", buf   ; BYTE*
    , "Ptr", parm_err   ; DWORD* optional, out
    , "UInt")   ; return: DWORD

●NetGroupAdd(servername, level, buf, parm_err) = DLL("NETAPI32.dll", "dword NetGroupAdd(char*, dword, void*, void*)")
# 呼び出し: NetGroupAdd(servername, level, buf, parm_err)
# servername : LPCWSTR optional -> "char*"
# level : DWORD -> "dword"
# buf : BYTE* -> "void*"
# parm_err : DWORD* optional, out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。