CreateServiceW

// ADVAPI32.dll  (Unicode / -W)
#include <windows.h>

SC_HANDLE CreateServiceW(
    SC_HANDLE hSCManager,
    LPCWSTR lpServiceName,
    LPCWSTR lpDisplayName,   // optional
    DWORD dwDesiredAccess,
    ENUM_SERVICE_TYPE dwServiceType,
    SERVICE_START_TYPE dwStartType,
    SERVICE_ERROR dwErrorControl,
    LPCWSTR lpBinaryPathName,   // optional
    LPCWSTR lpLoadOrderGroup,   // optional
    DWORD* lpdwTagId,   // optional
    LPCWSTR lpDependencies,   // optional
    LPCWSTR lpServiceStartName,   // optional
    LPCWSTR lpPassword   // optional
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CreateServiceW(
    hSCManager As IntPtr,   ' SC_HANDLE
    <MarshalAs(UnmanagedType.LPWStr)> lpServiceName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpDisplayName As String,   ' LPCWSTR optional
    dwDesiredAccess As UInteger,   ' DWORD
    dwServiceType As UInteger,   ' ENUM_SERVICE_TYPE
    dwStartType As UInteger,   ' SERVICE_START_TYPE
    dwErrorControl As UInteger,   ' SERVICE_ERROR
    <MarshalAs(UnmanagedType.LPWStr)> lpBinaryPathName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> lpLoadOrderGroup As String,   ' LPCWSTR optional
    lpdwTagId As IntPtr,   ' DWORD* optional, out
    <MarshalAs(UnmanagedType.LPWStr)> lpDependencies As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> lpServiceStartName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> lpPassword As String   ' LPCWSTR optional
) As IntPtr
End Function

' hSCManager : SC_HANDLE
' lpServiceName : LPCWSTR
' lpDisplayName : LPCWSTR optional
' dwDesiredAccess : DWORD
' dwServiceType : ENUM_SERVICE_TYPE
' dwStartType : SERVICE_START_TYPE
' dwErrorControl : SERVICE_ERROR
' lpBinaryPathName : LPCWSTR optional
' lpLoadOrderGroup : LPCWSTR optional
' lpdwTagId : DWORD* optional, out
' lpDependencies : LPCWSTR optional
' lpServiceStartName : LPCWSTR optional
' lpPassword : LPCWSTR optional
Declare PtrSafe Function CreateServiceW Lib "advapi32" ( _
    ByVal hSCManager As LongPtr, _
    ByVal lpServiceName As LongPtr, _
    ByVal lpDisplayName As LongPtr, _
    ByVal dwDesiredAccess As Long, _
    ByVal dwServiceType As Long, _
    ByVal dwStartType As Long, _
    ByVal dwErrorControl As Long, _
    ByVal lpBinaryPathName As LongPtr, _
    ByVal lpLoadOrderGroup As LongPtr, _
    ByVal lpdwTagId As LongPtr, _
    ByVal lpDependencies As LongPtr, _
    ByVal lpServiceStartName As LongPtr, _
    ByVal lpPassword As LongPtr) As LongPtr
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CreateServiceW = ctypes.windll.advapi32.CreateServiceW
CreateServiceW.restype = ctypes.c_void_p
CreateServiceW.argtypes = [
    wintypes.HANDLE,  # hSCManager : SC_HANDLE
    wintypes.LPCWSTR,  # lpServiceName : LPCWSTR
    wintypes.LPCWSTR,  # lpDisplayName : LPCWSTR optional
    wintypes.DWORD,  # dwDesiredAccess : DWORD
    wintypes.DWORD,  # dwServiceType : ENUM_SERVICE_TYPE
    wintypes.DWORD,  # dwStartType : SERVICE_START_TYPE
    wintypes.DWORD,  # dwErrorControl : SERVICE_ERROR
    wintypes.LPCWSTR,  # lpBinaryPathName : LPCWSTR optional
    wintypes.LPCWSTR,  # lpLoadOrderGroup : LPCWSTR optional
    ctypes.POINTER(wintypes.DWORD),  # lpdwTagId : DWORD* optional, out
    wintypes.LPCWSTR,  # lpDependencies : LPCWSTR optional
    wintypes.LPCWSTR,  # lpServiceStartName : LPCWSTR optional
    wintypes.LPCWSTR,  # lpPassword : LPCWSTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
CreateServiceW = Fiddle::Function.new(
  lib['CreateServiceW'],
  [
    Fiddle::TYPE_VOIDP,  # hSCManager : SC_HANDLE
    Fiddle::TYPE_VOIDP,  # lpServiceName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpDisplayName : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwDesiredAccess : DWORD
    -Fiddle::TYPE_INT,  # dwServiceType : ENUM_SERVICE_TYPE
    -Fiddle::TYPE_INT,  # dwStartType : SERVICE_START_TYPE
    -Fiddle::TYPE_INT,  # dwErrorControl : SERVICE_ERROR
    Fiddle::TYPE_VOIDP,  # lpBinaryPathName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lpLoadOrderGroup : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lpdwTagId : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # lpDependencies : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lpServiceStartName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lpPassword : LPCWSTR optional
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "advapi32")]
extern "system" {
    fn CreateServiceW(
        hSCManager: *mut core::ffi::c_void,  // SC_HANDLE
        lpServiceName: *const u16,  // LPCWSTR
        lpDisplayName: *const u16,  // LPCWSTR optional
        dwDesiredAccess: u32,  // DWORD
        dwServiceType: u32,  // ENUM_SERVICE_TYPE
        dwStartType: u32,  // SERVICE_START_TYPE
        dwErrorControl: u32,  // SERVICE_ERROR
        lpBinaryPathName: *const u16,  // LPCWSTR optional
        lpLoadOrderGroup: *const u16,  // LPCWSTR optional
        lpdwTagId: *mut u32,  // DWORD* optional, out
        lpDependencies: *const u16,  // LPCWSTR optional
        lpServiceStartName: *const u16,  // LPCWSTR optional
        lpPassword: *const u16  // LPCWSTR optional
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr CreateServiceW(IntPtr hSCManager, [MarshalAs(UnmanagedType.LPWStr)] string lpServiceName, [MarshalAs(UnmanagedType.LPWStr)] string lpDisplayName, uint dwDesiredAccess, uint dwServiceType, uint dwStartType, uint dwErrorControl, [MarshalAs(UnmanagedType.LPWStr)] string lpBinaryPathName, [MarshalAs(UnmanagedType.LPWStr)] string lpLoadOrderGroup, IntPtr lpdwTagId, [MarshalAs(UnmanagedType.LPWStr)] string lpDependencies, [MarshalAs(UnmanagedType.LPWStr)] string lpServiceStartName, [MarshalAs(UnmanagedType.LPWStr)] string lpPassword);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CreateServiceW' -Namespace Win32 -PassThru
# $api::CreateServiceW(hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, lpdwTagId, lpDependencies, lpServiceStartName, lpPassword)

#uselib "ADVAPI32.dll"
#func global CreateServiceW "CreateServiceW" wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr
; CreateServiceW hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, varptr(lpdwTagId), lpDependencies, lpServiceStartName, lpPassword   ; 戻り値は stat
; hSCManager : SC_HANDLE -> "wptr"
; lpServiceName : LPCWSTR -> "wptr"
; lpDisplayName : LPCWSTR optional -> "wptr"
; dwDesiredAccess : DWORD -> "wptr"
; dwServiceType : ENUM_SERVICE_TYPE -> "wptr"
; dwStartType : SERVICE_START_TYPE -> "wptr"
; dwErrorControl : SERVICE_ERROR -> "wptr"
; lpBinaryPathName : LPCWSTR optional -> "wptr"
; lpLoadOrderGroup : LPCWSTR optional -> "wptr"
; lpdwTagId : DWORD* optional, out -> "wptr"
; lpDependencies : LPCWSTR optional -> "wptr"
; lpServiceStartName : LPCWSTR optional -> "wptr"
; lpPassword : LPCWSTR optional -> "wptr"
; ※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。

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procCreateServiceW = advapi32.NewProc("CreateServiceW")
)

// hSCManager (SC_HANDLE), lpServiceName (LPCWSTR), lpDisplayName (LPCWSTR optional), dwDesiredAccess (DWORD), dwServiceType (ENUM_SERVICE_TYPE), dwStartType (SERVICE_START_TYPE), dwErrorControl (SERVICE_ERROR), lpBinaryPathName (LPCWSTR optional), lpLoadOrderGroup (LPCWSTR optional), lpdwTagId (DWORD* optional, out), lpDependencies (LPCWSTR optional), lpServiceStartName (LPCWSTR optional), lpPassword (LPCWSTR optional)
r1, _, err := procCreateServiceW.Call(
	uintptr(hSCManager),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpServiceName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpDisplayName))),
	uintptr(dwDesiredAccess),
	uintptr(dwServiceType),
	uintptr(dwStartType),
	uintptr(dwErrorControl),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpBinaryPathName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpLoadOrderGroup))),
	uintptr(lpdwTagId),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpDependencies))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpServiceStartName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpPassword))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SC_HANDLE

function CreateServiceW(
  hSCManager: THandle;   // SC_HANDLE
  lpServiceName: PWideChar;   // LPCWSTR
  lpDisplayName: PWideChar;   // LPCWSTR optional
  dwDesiredAccess: DWORD;   // DWORD
  dwServiceType: DWORD;   // ENUM_SERVICE_TYPE
  dwStartType: DWORD;   // SERVICE_START_TYPE
  dwErrorControl: DWORD;   // SERVICE_ERROR
  lpBinaryPathName: PWideChar;   // LPCWSTR optional
  lpLoadOrderGroup: PWideChar;   // LPCWSTR optional
  lpdwTagId: Pointer;   // DWORD* optional, out
  lpDependencies: PWideChar;   // LPCWSTR optional
  lpServiceStartName: PWideChar;   // LPCWSTR optional
  lpPassword: PWideChar   // LPCWSTR optional
): THandle; stdcall;
  external 'ADVAPI32.dll' name 'CreateServiceW';

result := DllCall("ADVAPI32\CreateServiceW"
    , "Ptr", hSCManager   ; SC_HANDLE
    , "WStr", lpServiceName   ; LPCWSTR
    , "WStr", lpDisplayName   ; LPCWSTR optional
    , "UInt", dwDesiredAccess   ; DWORD
    , "UInt", dwServiceType   ; ENUM_SERVICE_TYPE
    , "UInt", dwStartType   ; SERVICE_START_TYPE
    , "UInt", dwErrorControl   ; SERVICE_ERROR
    , "WStr", lpBinaryPathName   ; LPCWSTR optional
    , "WStr", lpLoadOrderGroup   ; LPCWSTR optional
    , "Ptr", lpdwTagId   ; DWORD* optional, out
    , "WStr", lpDependencies   ; LPCWSTR optional
    , "WStr", lpServiceStartName   ; LPCWSTR optional
    , "WStr", lpPassword   ; LPCWSTR optional
    , "Ptr")   ; return: SC_HANDLE

●CreateServiceW(hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, lpdwTagId, lpDependencies, lpServiceStartName, lpPassword) = DLL("ADVAPI32.dll", "void* CreateServiceW(void*, char*, char*, dword, dword, dword, dword, char*, char*, void*, char*, char*, char*)")
# 呼び出し: CreateServiceW(hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, lpdwTagId, lpDependencies, lpServiceStartName, lpPassword)
# hSCManager : SC_HANDLE -> "void*"
# lpServiceName : LPCWSTR -> "char*"
# lpDisplayName : LPCWSTR optional -> "char*"
# dwDesiredAccess : DWORD -> "dword"
# dwServiceType : ENUM_SERVICE_TYPE -> "dword"
# dwStartType : SERVICE_START_TYPE -> "dword"
# dwErrorControl : SERVICE_ERROR -> "dword"
# lpBinaryPathName : LPCWSTR optional -> "char*"
# lpLoadOrderGroup : LPCWSTR optional -> "char*"
# lpdwTagId : DWORD* optional, out -> "void*"
# lpDependencies : LPCWSTR optional -> "char*"
# lpServiceStartName : LPCWSTR optional -> "char*"
# lpPassword : LPCWSTR optional -> "char*"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "advapi32" fn CreateServiceW(
    hSCManager: ?*anyopaque, // SC_HANDLE
    lpServiceName: [*c]const u16, // LPCWSTR
    lpDisplayName: [*c]const u16, // LPCWSTR optional
    dwDesiredAccess: u32, // DWORD
    dwServiceType: u32, // ENUM_SERVICE_TYPE
    dwStartType: u32, // SERVICE_START_TYPE
    dwErrorControl: u32, // SERVICE_ERROR
    lpBinaryPathName: [*c]const u16, // LPCWSTR optional
    lpLoadOrderGroup: [*c]const u16, // LPCWSTR optional
    lpdwTagId: [*c]u32, // DWORD* optional, out
    lpDependencies: [*c]const u16, // LPCWSTR optional
    lpServiceStartName: [*c]const u16, // LPCWSTR optional
    lpPassword: [*c]const u16 // LPCWSTR optional
) callconv(std.os.windows.WINAPI) ?*anyopaque;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc CreateServiceW(
    hSCManager: pointer,  # SC_HANDLE
    lpServiceName: WideCString,  # LPCWSTR
    lpDisplayName: WideCString,  # LPCWSTR optional
    dwDesiredAccess: uint32,  # DWORD
    dwServiceType: uint32,  # ENUM_SERVICE_TYPE
    dwStartType: uint32,  # SERVICE_START_TYPE
    dwErrorControl: uint32,  # SERVICE_ERROR
    lpBinaryPathName: WideCString,  # LPCWSTR optional
    lpLoadOrderGroup: WideCString,  # LPCWSTR optional
    lpdwTagId: ptr uint32,  # DWORD* optional, out
    lpDependencies: WideCString,  # LPCWSTR optional
    lpServiceStartName: WideCString,  # LPCWSTR optional
    lpPassword: WideCString  # LPCWSTR optional
): pointer {.importc: "CreateServiceW", stdcall, dynlib: "ADVAPI32.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "advapi32");
extern(Windows)
void* CreateServiceW(
    void* hSCManager,   // SC_HANDLE
    const(wchar)* lpServiceName,   // LPCWSTR
    const(wchar)* lpDisplayName,   // LPCWSTR optional
    uint dwDesiredAccess,   // DWORD
    uint dwServiceType,   // ENUM_SERVICE_TYPE
    uint dwStartType,   // SERVICE_START_TYPE
    uint dwErrorControl,   // SERVICE_ERROR
    const(wchar)* lpBinaryPathName,   // LPCWSTR optional
    const(wchar)* lpLoadOrderGroup,   // LPCWSTR optional
    uint* lpdwTagId,   // DWORD* optional, out
    const(wchar)* lpDependencies,   // LPCWSTR optional
    const(wchar)* lpServiceStartName,   // LPCWSTR optional
    const(wchar)* lpPassword   // LPCWSTR optional
);

ccall((:CreateServiceW, "ADVAPI32.dll"), stdcall, Ptr{Cvoid},
      (Ptr{Cvoid}, Cwstring, Cwstring, UInt32, UInt32, UInt32, UInt32, Cwstring, Cwstring, Ptr{UInt32}, Cwstring, Cwstring, Cwstring),
      hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, lpdwTagId, lpDependencies, lpServiceStartName, lpPassword)
# hSCManager : SC_HANDLE -> Ptr{Cvoid}
# lpServiceName : LPCWSTR -> Cwstring
# lpDisplayName : LPCWSTR optional -> Cwstring
# dwDesiredAccess : DWORD -> UInt32
# dwServiceType : ENUM_SERVICE_TYPE -> UInt32
# dwStartType : SERVICE_START_TYPE -> UInt32
# dwErrorControl : SERVICE_ERROR -> UInt32
# lpBinaryPathName : LPCWSTR optional -> Cwstring
# lpLoadOrderGroup : LPCWSTR optional -> Cwstring
# lpdwTagId : DWORD* optional, out -> Ptr{UInt32}
# lpDependencies : LPCWSTR optional -> Cwstring
# lpServiceStartName : LPCWSTR optional -> Cwstring
# lpPassword : LPCWSTR optional -> Cwstring
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
void* CreateServiceW(
    void* hSCManager,
    const uint16_t* lpServiceName,
    const uint16_t* lpDisplayName,
    uint32_t dwDesiredAccess,
    uint32_t dwServiceType,
    uint32_t dwStartType,
    uint32_t dwErrorControl,
    const uint16_t* lpBinaryPathName,
    const uint16_t* lpLoadOrderGroup,
    uint32_t* lpdwTagId,
    const uint16_t* lpDependencies,
    const uint16_t* lpServiceStartName,
    const uint16_t* lpPassword);
]]
local advapi32 = ffi.load("advapi32")
-- advapi32.CreateServiceW(hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, lpdwTagId, lpDependencies, lpServiceStartName, lpPassword)
-- hSCManager : SC_HANDLE
-- lpServiceName : LPCWSTR
-- lpDisplayName : LPCWSTR optional
-- dwDesiredAccess : DWORD
-- dwServiceType : ENUM_SERVICE_TYPE
-- dwStartType : SERVICE_START_TYPE
-- dwErrorControl : SERVICE_ERROR
-- lpBinaryPathName : LPCWSTR optional
-- lpLoadOrderGroup : LPCWSTR optional
-- lpdwTagId : DWORD* optional, out
-- lpDependencies : LPCWSTR optional
-- lpServiceStartName : LPCWSTR optional
-- lpPassword : LPCWSTR optional
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('ADVAPI32.dll');
const CreateServiceW = lib.func('__stdcall', 'CreateServiceW', 'void *', ['void *', 'str16', 'str16', 'uint32_t', 'uint32_t', 'uint32_t', 'uint32_t', 'str16', 'str16', 'uint32_t *', 'str16', 'str16', 'str16']);
// CreateServiceW(hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, lpdwTagId, lpDependencies, lpServiceStartName, lpPassword)
// hSCManager : SC_HANDLE -> 'void *'
// lpServiceName : LPCWSTR -> 'str16'
// lpDisplayName : LPCWSTR optional -> 'str16'
// dwDesiredAccess : DWORD -> 'uint32_t'
// dwServiceType : ENUM_SERVICE_TYPE -> 'uint32_t'
// dwStartType : SERVICE_START_TYPE -> 'uint32_t'
// dwErrorControl : SERVICE_ERROR -> 'uint32_t'
// lpBinaryPathName : LPCWSTR optional -> 'str16'
// lpLoadOrderGroup : LPCWSTR optional -> 'str16'
// lpdwTagId : DWORD* optional, out -> 'uint32_t *'
// lpDependencies : LPCWSTR optional -> 'str16'
// lpServiceStartName : LPCWSTR optional -> 'str16'
// lpPassword : LPCWSTR optional -> 'str16'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("ADVAPI32.dll", {
  CreateServiceW: { parameters: ["pointer", "buffer", "buffer", "u32", "u32", "u32", "u32", "buffer", "buffer", "pointer", "buffer", "buffer", "buffer"], result: "pointer" },
});
// lib.symbols.CreateServiceW(hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, lpdwTagId, lpDependencies, lpServiceStartName, lpPassword)
// hSCManager : SC_HANDLE -> "pointer"
// lpServiceName : LPCWSTR -> "buffer"
// lpDisplayName : LPCWSTR optional -> "buffer"
// dwDesiredAccess : DWORD -> "u32"
// dwServiceType : ENUM_SERVICE_TYPE -> "u32"
// dwStartType : SERVICE_START_TYPE -> "u32"
// dwErrorControl : SERVICE_ERROR -> "u32"
// lpBinaryPathName : LPCWSTR optional -> "buffer"
// lpLoadOrderGroup : LPCWSTR optional -> "buffer"
// lpdwTagId : DWORD* optional, out -> "pointer"
// lpDependencies : LPCWSTR optional -> "buffer"
// lpServiceStartName : LPCWSTR optional -> "buffer"
// lpPassword : LPCWSTR optional -> "buffer"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void* CreateServiceW(
    void* hSCManager,
    const uint16_t* lpServiceName,
    const uint16_t* lpDisplayName,
    uint32_t dwDesiredAccess,
    uint32_t dwServiceType,
    uint32_t dwStartType,
    uint32_t dwErrorControl,
    const uint16_t* lpBinaryPathName,
    const uint16_t* lpLoadOrderGroup,
    uint32_t* lpdwTagId,
    const uint16_t* lpDependencies,
    const uint16_t* lpServiceStartName,
    const uint16_t* lpPassword);
C, "ADVAPI32.dll");
// $ffi->CreateServiceW(hSCManager, lpServiceName, lpDisplayName, dwDesiredAccess, dwServiceType, dwStartType, dwErrorControl, lpBinaryPathName, lpLoadOrderGroup, lpdwTagId, lpDependencies, lpServiceStartName, lpPassword);
// hSCManager : SC_HANDLE
// lpServiceName : LPCWSTR
// lpDisplayName : LPCWSTR optional
// dwDesiredAccess : DWORD
// dwServiceType : ENUM_SERVICE_TYPE
// dwStartType : SERVICE_START_TYPE
// dwErrorControl : SERVICE_ERROR
// lpBinaryPathName : LPCWSTR optional
// lpLoadOrderGroup : LPCWSTR optional
// lpdwTagId : DWORD* optional, out
// lpDependencies : LPCWSTR optional
// lpServiceStartName : LPCWSTR optional
// lpPassword : LPCWSTR optional
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Advapi32 extends StdCallLibrary {
    Advapi32 INSTANCE = Native.load("advapi32", Advapi32.class, W32APIOptions.UNICODE_OPTIONS);
    Pointer CreateServiceW(
        Pointer hSCManager,   // SC_HANDLE
        WString lpServiceName,   // LPCWSTR
        WString lpDisplayName,   // LPCWSTR optional
        int dwDesiredAccess,   // DWORD
        int dwServiceType,   // ENUM_SERVICE_TYPE
        int dwStartType,   // SERVICE_START_TYPE
        int dwErrorControl,   // SERVICE_ERROR
        WString lpBinaryPathName,   // LPCWSTR optional
        WString lpLoadOrderGroup,   // LPCWSTR optional
        IntByReference lpdwTagId,   // DWORD* optional, out
        WString lpDependencies,   // LPCWSTR optional
        WString lpServiceStartName,   // LPCWSTR optional
        WString lpPassword   // LPCWSTR optional
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("advapi32")]
lib LibADVAPI32
  fun CreateServiceW = CreateServiceW(
    hSCManager : Void*,   # SC_HANDLE
    lpServiceName : UInt16*,   # LPCWSTR
    lpDisplayName : UInt16*,   # LPCWSTR optional
    dwDesiredAccess : UInt32,   # DWORD
    dwServiceType : UInt32,   # ENUM_SERVICE_TYPE
    dwStartType : UInt32,   # SERVICE_START_TYPE
    dwErrorControl : UInt32,   # SERVICE_ERROR
    lpBinaryPathName : UInt16*,   # LPCWSTR optional
    lpLoadOrderGroup : UInt16*,   # LPCWSTR optional
    lpdwTagId : UInt32*,   # DWORD* optional, out
    lpDependencies : UInt16*,   # LPCWSTR optional
    lpServiceStartName : UInt16*,   # LPCWSTR optional
    lpPassword : UInt16*   # LPCWSTR optional
  ) : Void*
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef CreateServiceWNative = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Uint32, Uint32, Uint32, Uint32, Pointer<Utf16>, Pointer<Utf16>, Pointer<Uint32>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>);
typedef CreateServiceWDart = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, int, int, int, int, Pointer<Utf16>, Pointer<Utf16>, Pointer<Uint32>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>);
final CreateServiceW = DynamicLibrary.open('ADVAPI32.dll')
    .lookupFunction<CreateServiceWNative, CreateServiceWDart>('CreateServiceW');
// hSCManager : SC_HANDLE -> Pointer<Void>
// lpServiceName : LPCWSTR -> Pointer<Utf16>
// lpDisplayName : LPCWSTR optional -> Pointer<Utf16>
// dwDesiredAccess : DWORD -> Uint32
// dwServiceType : ENUM_SERVICE_TYPE -> Uint32
// dwStartType : SERVICE_START_TYPE -> Uint32
// dwErrorControl : SERVICE_ERROR -> Uint32
// lpBinaryPathName : LPCWSTR optional -> Pointer<Utf16>
// lpLoadOrderGroup : LPCWSTR optional -> Pointer<Utf16>
// lpdwTagId : DWORD* optional, out -> Pointer<Uint32>
// lpDependencies : LPCWSTR optional -> Pointer<Utf16>
// lpServiceStartName : LPCWSTR optional -> Pointer<Utf16>
// lpPassword : LPCWSTR optional -> Pointer<Utf16>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CreateServiceW(
  hSCManager: THandle;   // SC_HANDLE
  lpServiceName: PWideChar;   // LPCWSTR
  lpDisplayName: PWideChar;   // LPCWSTR optional
  dwDesiredAccess: DWORD;   // DWORD
  dwServiceType: DWORD;   // ENUM_SERVICE_TYPE
  dwStartType: DWORD;   // SERVICE_START_TYPE
  dwErrorControl: DWORD;   // SERVICE_ERROR
  lpBinaryPathName: PWideChar;   // LPCWSTR optional
  lpLoadOrderGroup: PWideChar;   // LPCWSTR optional
  lpdwTagId: Pointer;   // DWORD* optional, out
  lpDependencies: PWideChar;   // LPCWSTR optional
  lpServiceStartName: PWideChar;   // LPCWSTR optional
  lpPassword: PWideChar   // LPCWSTR optional
): THandle; stdcall;
  external 'ADVAPI32.dll' name 'CreateServiceW';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "CreateServiceW"
  c_CreateServiceW :: Ptr () -> CWString -> CWString -> Word32 -> Word32 -> Word32 -> Word32 -> CWString -> CWString -> Ptr Word32 -> CWString -> CWString -> CWString -> IO (Ptr ())
-- hSCManager : SC_HANDLE -> Ptr ()
-- lpServiceName : LPCWSTR -> CWString
-- lpDisplayName : LPCWSTR optional -> CWString
-- dwDesiredAccess : DWORD -> Word32
-- dwServiceType : ENUM_SERVICE_TYPE -> Word32
-- dwStartType : SERVICE_START_TYPE -> Word32
-- dwErrorControl : SERVICE_ERROR -> Word32
-- lpBinaryPathName : LPCWSTR optional -> CWString
-- lpLoadOrderGroup : LPCWSTR optional -> CWString
-- lpdwTagId : DWORD* optional, out -> Ptr Word32
-- lpDependencies : LPCWSTR optional -> CWString
-- lpServiceStartName : LPCWSTR optional -> CWString
-- lpPassword : LPCWSTR optional -> CWString
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let createservicew =
  foreign "CreateServiceW"
    ((ptr void) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> uint32_t @-> uint32_t @-> uint32_t @-> uint32_t @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr uint32_t) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> returning (ptr void))
(* hSCManager : SC_HANDLE -> (ptr void) *)
(* lpServiceName : LPCWSTR -> (ptr uint16_t) *)
(* lpDisplayName : LPCWSTR optional -> (ptr uint16_t) *)
(* dwDesiredAccess : DWORD -> uint32_t *)
(* dwServiceType : ENUM_SERVICE_TYPE -> uint32_t *)
(* dwStartType : SERVICE_START_TYPE -> uint32_t *)
(* dwErrorControl : SERVICE_ERROR -> uint32_t *)
(* lpBinaryPathName : LPCWSTR optional -> (ptr uint16_t) *)
(* lpLoadOrderGroup : LPCWSTR optional -> (ptr uint16_t) *)
(* lpdwTagId : DWORD* optional, out -> (ptr uint32_t) *)
(* lpDependencies : LPCWSTR optional -> (ptr uint16_t) *)
(* lpServiceStartName : LPCWSTR optional -> (ptr uint16_t) *)
(* lpPassword : LPCWSTR optional -> (ptr uint16_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library advapi32 (t "ADVAPI32.dll"))
(cffi:use-foreign-library advapi32)

(cffi:defcfun ("CreateServiceW" create-service-w :convention :stdcall) :pointer
  (h-scmanager :pointer)   ; SC_HANDLE
  (lp-service-name (:string :encoding :utf-16le))   ; LPCWSTR
  (lp-display-name (:string :encoding :utf-16le))   ; LPCWSTR optional
  (dw-desired-access :uint32)   ; DWORD
  (dw-service-type :uint32)   ; ENUM_SERVICE_TYPE
  (dw-start-type :uint32)   ; SERVICE_START_TYPE
  (dw-error-control :uint32)   ; SERVICE_ERROR
  (lp-binary-path-name (:string :encoding :utf-16le))   ; LPCWSTR optional
  (lp-load-order-group (:string :encoding :utf-16le))   ; LPCWSTR optional
  (lpdw-tag-id :pointer)   ; DWORD* optional, out
  (lp-dependencies (:string :encoding :utf-16le))   ; LPCWSTR optional
  (lp-service-start-name (:string :encoding :utf-16le))   ; LPCWSTR optional
  (lp-password (:string :encoding :utf-16le)))   ; LPCWSTR optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $CreateServiceW = Win32::API::More->new('ADVAPI32',
    'HANDLE CreateServiceW(HANDLE hSCManager, LPCWSTR lpServiceName, LPCWSTR lpDisplayName, DWORD dwDesiredAccess, DWORD dwServiceType, DWORD dwStartType, DWORD dwErrorControl, LPCWSTR lpBinaryPathName, LPCWSTR lpLoadOrderGroup, LPVOID lpdwTagId, LPCWSTR lpDependencies, LPCWSTR lpServiceStartName, LPCWSTR lpPassword)');
# my $ret = $CreateServiceW->Call($hSCManager, $lpServiceName, $lpDisplayName, $dwDesiredAccess, $dwServiceType, $dwStartType, $dwErrorControl, $lpBinaryPathName, $lpLoadOrderGroup, $lpdwTagId, $lpDependencies, $lpServiceStartName, $lpPassword);
# hSCManager : SC_HANDLE -> HANDLE
# lpServiceName : LPCWSTR -> LPCWSTR
# lpDisplayName : LPCWSTR optional -> LPCWSTR
# dwDesiredAccess : DWORD -> DWORD
# dwServiceType : ENUM_SERVICE_TYPE -> DWORD
# dwStartType : SERVICE_START_TYPE -> DWORD
# dwErrorControl : SERVICE_ERROR -> DWORD
# lpBinaryPathName : LPCWSTR optional -> LPCWSTR
# lpLoadOrderGroup : LPCWSTR optional -> LPCWSTR
# lpdwTagId : DWORD* optional, out -> LPVOID
# lpDependencies : LPCWSTR optional -> LPCWSTR
# lpServiceStartName : LPCWSTR optional -> LPCWSTR
# lpPassword : LPCWSTR optional -> LPCWSTR
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。