NetSetPrimaryComputerName

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

DWORD NetSetPrimaryComputerName(
    LPCWSTR Server,   // optional
    LPCWSTR PrimaryName,
    LPCWSTR DomainAccount,   // optional
    LPCWSTR DomainAccountPassword,   // optional
    DWORD Reserved
);

<DllImport("NETAPI32.dll", ExactSpelling:=True)>
Public Shared Function NetSetPrimaryComputerName(
    <MarshalAs(UnmanagedType.LPWStr)> Server As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> PrimaryName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> DomainAccount As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> DomainAccountPassword As String,   ' LPCWSTR optional
    Reserved As UInteger   ' DWORD
) As UInteger
End Function

' Server : LPCWSTR optional
' PrimaryName : LPCWSTR
' DomainAccount : LPCWSTR optional
' DomainAccountPassword : LPCWSTR optional
' Reserved : DWORD
Declare PtrSafe Function NetSetPrimaryComputerName Lib "netapi32" ( _
    ByVal Server As LongPtr, _
    ByVal PrimaryName As LongPtr, _
    ByVal DomainAccount As LongPtr, _
    ByVal DomainAccountPassword As LongPtr, _
    ByVal Reserved As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

NetSetPrimaryComputerName = ctypes.windll.netapi32.NetSetPrimaryComputerName
NetSetPrimaryComputerName.restype = wintypes.DWORD
NetSetPrimaryComputerName.argtypes = [
    wintypes.LPCWSTR,  # Server : LPCWSTR optional
    wintypes.LPCWSTR,  # PrimaryName : LPCWSTR
    wintypes.LPCWSTR,  # DomainAccount : LPCWSTR optional
    wintypes.LPCWSTR,  # DomainAccountPassword : LPCWSTR optional
    wintypes.DWORD,  # Reserved : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('NETAPI32.dll')
NetSetPrimaryComputerName = Fiddle::Function.new(
  lib['NetSetPrimaryComputerName'],
  [
    Fiddle::TYPE_VOIDP,  # Server : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # PrimaryName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # DomainAccount : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # DomainAccountPassword : LPCWSTR optional
    -Fiddle::TYPE_INT,  # Reserved : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "netapi32")]
extern "system" {
    fn NetSetPrimaryComputerName(
        Server: *const u16,  // LPCWSTR optional
        PrimaryName: *const u16,  // LPCWSTR
        DomainAccount: *const u16,  // LPCWSTR optional
        DomainAccountPassword: *const u16,  // LPCWSTR optional
        Reserved: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("NETAPI32.dll")]
public static extern uint NetSetPrimaryComputerName([MarshalAs(UnmanagedType.LPWStr)] string Server, [MarshalAs(UnmanagedType.LPWStr)] string PrimaryName, [MarshalAs(UnmanagedType.LPWStr)] string DomainAccount, [MarshalAs(UnmanagedType.LPWStr)] string DomainAccountPassword, uint Reserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'NETAPI32_NetSetPrimaryComputerName' -Namespace Win32 -PassThru
# $api::NetSetPrimaryComputerName(Server, PrimaryName, DomainAccount, DomainAccountPassword, Reserved)

#uselib "NETAPI32.dll"
#func global NetSetPrimaryComputerName "NetSetPrimaryComputerName" sptr, sptr, sptr, sptr, sptr
; NetSetPrimaryComputerName Server, PrimaryName, DomainAccount, DomainAccountPassword, Reserved   ; 戻り値は stat
; Server : LPCWSTR optional -> "sptr"
; PrimaryName : LPCWSTR -> "sptr"
; DomainAccount : LPCWSTR optional -> "sptr"
; DomainAccountPassword : LPCWSTR optional -> "sptr"
; Reserved : DWORD -> "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 NetSetPrimaryComputerName "NetSetPrimaryComputerName" wstr, wstr, wstr, wstr, int
; res = NetSetPrimaryComputerName(Server, PrimaryName, DomainAccount, DomainAccountPassword, Reserved)
; Server : LPCWSTR optional -> "wstr"
; PrimaryName : LPCWSTR -> "wstr"
; DomainAccount : LPCWSTR optional -> "wstr"
; DomainAccountPassword : LPCWSTR optional -> "wstr"
; Reserved : DWORD -> "int"

; DWORD NetSetPrimaryComputerName(LPCWSTR Server, LPCWSTR PrimaryName, LPCWSTR DomainAccount, LPCWSTR DomainAccountPassword, DWORD Reserved)
#uselib "NETAPI32.dll"
#cfunc global NetSetPrimaryComputerName "NetSetPrimaryComputerName" wstr, wstr, wstr, wstr, int
; res = NetSetPrimaryComputerName(Server, PrimaryName, DomainAccount, DomainAccountPassword, Reserved)
; Server : LPCWSTR optional -> "wstr"
; PrimaryName : LPCWSTR -> "wstr"
; DomainAccount : LPCWSTR optional -> "wstr"
; DomainAccountPassword : LPCWSTR optional -> "wstr"
; Reserved : DWORD -> "int"

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

var (
	netapi32 = windows.NewLazySystemDLL("NETAPI32.dll")
	procNetSetPrimaryComputerName = netapi32.NewProc("NetSetPrimaryComputerName")
)

// Server (LPCWSTR optional), PrimaryName (LPCWSTR), DomainAccount (LPCWSTR optional), DomainAccountPassword (LPCWSTR optional), Reserved (DWORD)
r1, _, err := procNetSetPrimaryComputerName.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Server))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(PrimaryName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(DomainAccount))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(DomainAccountPassword))),
	uintptr(Reserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function NetSetPrimaryComputerName(
  Server: PWideChar;   // LPCWSTR optional
  PrimaryName: PWideChar;   // LPCWSTR
  DomainAccount: PWideChar;   // LPCWSTR optional
  DomainAccountPassword: PWideChar;   // LPCWSTR optional
  Reserved: DWORD   // DWORD
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'NetSetPrimaryComputerName';

result := DllCall("NETAPI32\NetSetPrimaryComputerName"
    , "WStr", Server   ; LPCWSTR optional
    , "WStr", PrimaryName   ; LPCWSTR
    , "WStr", DomainAccount   ; LPCWSTR optional
    , "WStr", DomainAccountPassword   ; LPCWSTR optional
    , "UInt", Reserved   ; DWORD
    , "UInt")   ; return: DWORD

●NetSetPrimaryComputerName(Server, PrimaryName, DomainAccount, DomainAccountPassword, Reserved) = DLL("NETAPI32.dll", "dword NetSetPrimaryComputerName(char*, char*, char*, char*, dword)")
# 呼び出し: NetSetPrimaryComputerName(Server, PrimaryName, DomainAccount, DomainAccountPassword, Reserved)
# Server : LPCWSTR optional -> "char*"
# PrimaryName : LPCWSTR -> "char*"
# DomainAccount : LPCWSTR optional -> "char*"
# DomainAccountPassword : LPCWSTR optional -> "char*"
# Reserved : DWORD -> "dword"
# 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)。