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DRMGetUserInfo

関数

RMSユーザーの名前やIDなどの情報を取得する。

DLLmsdrm.dll呼出規約winapi

シグネチャ

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

HRESULT DRMGetUserInfo(
    DWORD hUser,
    DWORD* puUserNameLength,
    LPWSTR wszUserName,   // optional
    DWORD* puUserIdLength,
    LPWSTR wszUserId,   // optional
    DWORD* puUserIdTypeLength,
    LPWSTR wszUserIdType   // optional
);

パラメーター

名前	型	方向	説明
hUser	DWORD	in	対象のユーザーオブジェクトハンドル。
puUserNameLength	DWORD*	inout	入力時に名前バッファ長、出力時に必要長を示すポインタ。
wszUserName	LPWSTR	outoptional	ユーザー名を受け取る出力バッファ。NULLでサイズ問い合わせ可。
puUserIdLength	DWORD*	inout	入力時にIDバッファ長、出力時に必要長を示すポインタ。
wszUserId	LPWSTR	outoptional	ユーザーIDを受け取る出力バッファ。NULLでサイズ問い合わせ可。
puUserIdTypeLength	DWORD*	inout	入力時にID種別バッファ長、出力時に必要長を示すポインタ。
wszUserIdType	LPWSTR	outoptional	ユーザーID種別を受け取る出力バッファ。NULLでサイズ問い合わせ可。

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT DRMGetUserInfo(
    DWORD hUser,
    DWORD* puUserNameLength,
    LPWSTR wszUserName,   // optional
    DWORD* puUserIdLength,
    LPWSTR wszUserId,   // optional
    DWORD* puUserIdTypeLength,
    LPWSTR wszUserIdType   // optional
);

[DllImport("msdrm.dll", ExactSpelling = true)]
static extern int DRMGetUserInfo(
    uint hUser,   // DWORD
    ref uint puUserNameLength,   // DWORD* in/out
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder wszUserName,   // LPWSTR optional, out
    ref uint puUserIdLength,   // DWORD* in/out
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder wszUserId,   // LPWSTR optional, out
    ref uint puUserIdTypeLength,   // DWORD* in/out
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder wszUserIdType   // LPWSTR optional, out
);

<DllImport("msdrm.dll", ExactSpelling:=True)>
Public Shared Function DRMGetUserInfo(
    hUser As UInteger,   ' DWORD
    ByRef puUserNameLength As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> wszUserName As System.Text.StringBuilder,   ' LPWSTR optional, out
    ByRef puUserIdLength As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> wszUserId As System.Text.StringBuilder,   ' LPWSTR optional, out
    ByRef puUserIdTypeLength As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> wszUserIdType As System.Text.StringBuilder   ' LPWSTR optional, out
) As Integer
End Function

' hUser : DWORD
' puUserNameLength : DWORD* in/out
' wszUserName : LPWSTR optional, out
' puUserIdLength : DWORD* in/out
' wszUserId : LPWSTR optional, out
' puUserIdTypeLength : DWORD* in/out
' wszUserIdType : LPWSTR optional, out
Declare PtrSafe Function DRMGetUserInfo Lib "msdrm" ( _
    ByVal hUser As Long, _
    ByRef puUserNameLength As Long, _
    ByVal wszUserName As LongPtr, _
    ByRef puUserIdLength As Long, _
    ByVal wszUserId As LongPtr, _
    ByRef puUserIdTypeLength As Long, _
    ByVal wszUserIdType 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

DRMGetUserInfo = ctypes.windll.msdrm.DRMGetUserInfo
DRMGetUserInfo.restype = ctypes.c_int
DRMGetUserInfo.argtypes = [
    wintypes.DWORD,  # hUser : DWORD
    ctypes.POINTER(wintypes.DWORD),  # puUserNameLength : DWORD* in/out
    wintypes.LPWSTR,  # wszUserName : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # puUserIdLength : DWORD* in/out
    wintypes.LPWSTR,  # wszUserId : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # puUserIdTypeLength : DWORD* in/out
    wintypes.LPWSTR,  # wszUserIdType : LPWSTR optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdrm.dll')
DRMGetUserInfo = Fiddle::Function.new(
  lib['DRMGetUserInfo'],
  [
    -Fiddle::TYPE_INT,  # hUser : DWORD
    Fiddle::TYPE_VOIDP,  # puUserNameLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # wszUserName : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # puUserIdLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # wszUserId : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # puUserIdTypeLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # wszUserIdType : LPWSTR optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "msdrm")]
extern "system" {
    fn DRMGetUserInfo(
        hUser: u32,  // DWORD
        puUserNameLength: *mut u32,  // DWORD* in/out
        wszUserName: *mut u16,  // LPWSTR optional, out
        puUserIdLength: *mut u32,  // DWORD* in/out
        wszUserId: *mut u16,  // LPWSTR optional, out
        puUserIdTypeLength: *mut u32,  // DWORD* in/out
        wszUserIdType: *mut u16  // LPWSTR optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msdrm.dll")]
public static extern int DRMGetUserInfo(uint hUser, ref uint puUserNameLength, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder wszUserName, ref uint puUserIdLength, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder wszUserId, ref uint puUserIdTypeLength, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder wszUserIdType);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msdrm_DRMGetUserInfo' -Namespace Win32 -PassThru
# $api::DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType)

#uselib "msdrm.dll"
#func global DRMGetUserInfo "DRMGetUserInfo" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; DRMGetUserInfo hUser, varptr(puUserNameLength), varptr(wszUserName), varptr(puUserIdLength), varptr(wszUserId), varptr(puUserIdTypeLength), varptr(wszUserIdType)   ; 戻り値は stat
; hUser : DWORD -> "sptr"
; puUserNameLength : DWORD* in/out -> "sptr"
; wszUserName : LPWSTR optional, out -> "sptr"
; puUserIdLength : DWORD* in/out -> "sptr"
; wszUserId : LPWSTR optional, out -> "sptr"
; puUserIdTypeLength : DWORD* in/out -> "sptr"
; wszUserIdType : LPWSTR 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。

出力引数:

#uselib "msdrm.dll"
#cfunc global DRMGetUserInfo "DRMGetUserInfo" int, var, var, var, var, var, var
; res = DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType)
; hUser : DWORD -> "int"
; puUserNameLength : DWORD* in/out -> "var"
; wszUserName : LPWSTR optional, out -> "var"
; puUserIdLength : DWORD* in/out -> "var"
; wszUserId : LPWSTR optional, out -> "var"
; puUserIdTypeLength : DWORD* in/out -> "var"
; wszUserIdType : LPWSTR 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。#uselib "msdrm.dll"
#cfunc global DRMGetUserInfo "DRMGetUserInfo" int, sptr, sptr, sptr, sptr, sptr, sptr
; res = DRMGetUserInfo(hUser, varptr(puUserNameLength), varptr(wszUserName), varptr(puUserIdLength), varptr(wszUserId), varptr(puUserIdTypeLength), varptr(wszUserIdType))
; hUser : DWORD -> "int"
; puUserNameLength : DWORD* in/out -> "sptr"
; wszUserName : LPWSTR optional, out -> "sptr"
; puUserIdLength : DWORD* in/out -> "sptr"
; wszUserId : LPWSTR optional, out -> "sptr"
; puUserIdTypeLength : DWORD* in/out -> "sptr"
; wszUserIdType : LPWSTR optional, out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; HRESULT DRMGetUserInfo(DWORD hUser, DWORD* puUserNameLength, LPWSTR wszUserName, DWORD* puUserIdLength, LPWSTR wszUserId, DWORD* puUserIdTypeLength, LPWSTR wszUserIdType)
#uselib "msdrm.dll"
#cfunc global DRMGetUserInfo "DRMGetUserInfo" int, var, var, var, var, var, var
; res = DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType)
; hUser : DWORD -> "int"
; puUserNameLength : DWORD* in/out -> "var"
; wszUserName : LPWSTR optional, out -> "var"
; puUserIdLength : DWORD* in/out -> "var"
; wszUserId : LPWSTR optional, out -> "var"
; puUserIdTypeLength : DWORD* in/out -> "var"
; wszUserIdType : LPWSTR 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。; HRESULT DRMGetUserInfo(DWORD hUser, DWORD* puUserNameLength, LPWSTR wszUserName, DWORD* puUserIdLength, LPWSTR wszUserId, DWORD* puUserIdTypeLength, LPWSTR wszUserIdType)
#uselib "msdrm.dll"
#cfunc global DRMGetUserInfo "DRMGetUserInfo" int, intptr, intptr, intptr, intptr, intptr, intptr
; res = DRMGetUserInfo(hUser, varptr(puUserNameLength), varptr(wszUserName), varptr(puUserIdLength), varptr(wszUserId), varptr(puUserIdTypeLength), varptr(wszUserIdType))
; hUser : DWORD -> "int"
; puUserNameLength : DWORD* in/out -> "intptr"
; wszUserName : LPWSTR optional, out -> "intptr"
; puUserIdLength : DWORD* in/out -> "intptr"
; wszUserId : LPWSTR optional, out -> "intptr"
; puUserIdTypeLength : DWORD* in/out -> "intptr"
; wszUserIdType : LPWSTR optional, out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	msdrm = windows.NewLazySystemDLL("msdrm.dll")
	procDRMGetUserInfo = msdrm.NewProc("DRMGetUserInfo")
)

// hUser (DWORD), puUserNameLength (DWORD* in/out), wszUserName (LPWSTR optional, out), puUserIdLength (DWORD* in/out), wszUserId (LPWSTR optional, out), puUserIdTypeLength (DWORD* in/out), wszUserIdType (LPWSTR optional, out)
r1, _, err := procDRMGetUserInfo.Call(
	uintptr(hUser),
	uintptr(puUserNameLength),
	uintptr(wszUserName),
	uintptr(puUserIdLength),
	uintptr(wszUserId),
	uintptr(puUserIdTypeLength),
	uintptr(wszUserIdType),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DRMGetUserInfo(
  hUser: DWORD;   // DWORD
  puUserNameLength: Pointer;   // DWORD* in/out
  wszUserName: PWideChar;   // LPWSTR optional, out
  puUserIdLength: Pointer;   // DWORD* in/out
  wszUserId: PWideChar;   // LPWSTR optional, out
  puUserIdTypeLength: Pointer;   // DWORD* in/out
  wszUserIdType: PWideChar   // LPWSTR optional, out
): Integer; stdcall;
  external 'msdrm.dll' name 'DRMGetUserInfo';

result := DllCall("msdrm\DRMGetUserInfo"
    , "UInt", hUser   ; DWORD
    , "Ptr", puUserNameLength   ; DWORD* in/out
    , "Ptr", wszUserName   ; LPWSTR optional, out
    , "Ptr", puUserIdLength   ; DWORD* in/out
    , "Ptr", wszUserId   ; LPWSTR optional, out
    , "Ptr", puUserIdTypeLength   ; DWORD* in/out
    , "Ptr", wszUserIdType   ; LPWSTR optional, out
    , "Int")   ; return: HRESULT

●DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType) = DLL("msdrm.dll", "int DRMGetUserInfo(dword, void*, char*, void*, char*, void*, char*)")
# 呼び出し: DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType)
# hUser : DWORD -> "dword"
# puUserNameLength : DWORD* in/out -> "void*"
# wszUserName : LPWSTR optional, out -> "char*"
# puUserIdLength : DWORD* in/out -> "void*"
# wszUserId : LPWSTR optional, out -> "char*"
# puUserIdTypeLength : DWORD* in/out -> "void*"
# wszUserIdType : LPWSTR optional, out -> "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)。

const std = @import("std");

extern "msdrm" fn DRMGetUserInfo(
    hUser: u32, // DWORD
    puUserNameLength: [*c]u32, // DWORD* in/out
    wszUserName: [*c]u16, // LPWSTR optional, out
    puUserIdLength: [*c]u32, // DWORD* in/out
    wszUserId: [*c]u16, // LPWSTR optional, out
    puUserIdTypeLength: [*c]u32, // DWORD* in/out
    wszUserIdType: [*c]u16 // LPWSTR optional, out
) callconv(std.os.windows.WINAPI) i32;

proc DRMGetUserInfo(
    hUser: uint32,  # DWORD
    puUserNameLength: ptr uint32,  # DWORD* in/out
    wszUserName: ptr uint16,  # LPWSTR optional, out
    puUserIdLength: ptr uint32,  # DWORD* in/out
    wszUserId: ptr uint16,  # LPWSTR optional, out
    puUserIdTypeLength: ptr uint32,  # DWORD* in/out
    wszUserIdType: ptr uint16  # LPWSTR optional, out
): int32 {.importc: "DRMGetUserInfo", stdcall, dynlib: "msdrm.dll".}

pragma(lib, "msdrm");
extern(Windows)
int DRMGetUserInfo(
    uint hUser,   // DWORD
    uint* puUserNameLength,   // DWORD* in/out
    wchar* wszUserName,   // LPWSTR optional, out
    uint* puUserIdLength,   // DWORD* in/out
    wchar* wszUserId,   // LPWSTR optional, out
    uint* puUserIdTypeLength,   // DWORD* in/out
    wchar* wszUserIdType   // LPWSTR optional, out
);

ccall((:DRMGetUserInfo, "msdrm.dll"), stdcall, Int32,
      (UInt32, Ptr{UInt32}, Ptr{UInt16}, Ptr{UInt32}, Ptr{UInt16}, Ptr{UInt32}, Ptr{UInt16}),
      hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType)
# hUser : DWORD -> UInt32
# puUserNameLength : DWORD* in/out -> Ptr{UInt32}
# wszUserName : LPWSTR optional, out -> Ptr{UInt16}
# puUserIdLength : DWORD* in/out -> Ptr{UInt32}
# wszUserId : LPWSTR optional, out -> Ptr{UInt16}
# puUserIdTypeLength : DWORD* in/out -> Ptr{UInt32}
# wszUserIdType : LPWSTR optional, out -> Ptr{UInt16}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t DRMGetUserInfo(
    uint32_t hUser,
    uint32_t* puUserNameLength,
    uint16_t* wszUserName,
    uint32_t* puUserIdLength,
    uint16_t* wszUserId,
    uint32_t* puUserIdTypeLength,
    uint16_t* wszUserIdType);
]]
local msdrm = ffi.load("msdrm")
-- msdrm.DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType)
-- hUser : DWORD
-- puUserNameLength : DWORD* in/out
-- wszUserName : LPWSTR optional, out
-- puUserIdLength : DWORD* in/out
-- wszUserId : LPWSTR optional, out
-- puUserIdTypeLength : DWORD* in/out
-- wszUserIdType : LPWSTR optional, out
-- 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。

const koffi = require('koffi');
const lib = koffi.load('msdrm.dll');
const DRMGetUserInfo = lib.func('__stdcall', 'DRMGetUserInfo', 'int32_t', ['uint32_t', 'uint32_t *', 'uint16_t *', 'uint32_t *', 'uint16_t *', 'uint32_t *', 'uint16_t *']);
// DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType)
// hUser : DWORD -> 'uint32_t'
// puUserNameLength : DWORD* in/out -> 'uint32_t *'
// wszUserName : LPWSTR optional, out -> 'uint16_t *'
// puUserIdLength : DWORD* in/out -> 'uint32_t *'
// wszUserId : LPWSTR optional, out -> 'uint16_t *'
// puUserIdTypeLength : DWORD* in/out -> 'uint32_t *'
// wszUserIdType : LPWSTR optional, out -> 'uint16_t *'
// 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("msdrm.dll", {
  DRMGetUserInfo: { parameters: ["u32", "pointer", "buffer", "pointer", "buffer", "pointer", "buffer"], result: "i32" },
});
// lib.symbols.DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType)
// hUser : DWORD -> "u32"
// puUserNameLength : DWORD* in/out -> "pointer"
// wszUserName : LPWSTR optional, out -> "buffer"
// puUserIdLength : DWORD* in/out -> "pointer"
// wszUserId : LPWSTR optional, out -> "buffer"
// puUserIdTypeLength : DWORD* in/out -> "pointer"
// wszUserIdType : LPWSTR optional, out -> "buffer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t DRMGetUserInfo(
    uint32_t hUser,
    uint32_t* puUserNameLength,
    uint16_t* wszUserName,
    uint32_t* puUserIdLength,
    uint16_t* wszUserId,
    uint32_t* puUserIdTypeLength,
    uint16_t* wszUserIdType);
C, "msdrm.dll");
// $ffi->DRMGetUserInfo(hUser, puUserNameLength, wszUserName, puUserIdLength, wszUserId, puUserIdTypeLength, wszUserIdType);
// hUser : DWORD
// puUserNameLength : DWORD* in/out
// wszUserName : LPWSTR optional, out
// puUserIdLength : DWORD* in/out
// wszUserId : LPWSTR optional, out
// puUserIdTypeLength : DWORD* in/out
// wszUserIdType : LPWSTR optional, out
// 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 Msdrm extends StdCallLibrary {
    Msdrm INSTANCE = Native.load("msdrm", Msdrm.class);
    int DRMGetUserInfo(
        int hUser,   // DWORD
        IntByReference puUserNameLength,   // DWORD* in/out
        char[] wszUserName,   // LPWSTR optional, out
        IntByReference puUserIdLength,   // DWORD* in/out
        char[] wszUserId,   // LPWSTR optional, out
        IntByReference puUserIdTypeLength,   // DWORD* in/out
        char[] wszUserIdType   // LPWSTR optional, out
    );
}

@[Link("msdrm")]
lib Libmsdrm
  fun DRMGetUserInfo = DRMGetUserInfo(
    hUser : UInt32,   # DWORD
    puUserNameLength : UInt32*,   # DWORD* in/out
    wszUserName : UInt16*,   # LPWSTR optional, out
    puUserIdLength : UInt32*,   # DWORD* in/out
    wszUserId : UInt16*,   # LPWSTR optional, out
    puUserIdTypeLength : UInt32*,   # DWORD* in/out
    wszUserIdType : UInt16*   # LPWSTR optional, out
  ) : Int32
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 DRMGetUserInfoNative = Int32 Function(Uint32, Pointer<Uint32>, Pointer<Utf16>, Pointer<Uint32>, Pointer<Utf16>, Pointer<Uint32>, Pointer<Utf16>);
typedef DRMGetUserInfoDart = int Function(int, Pointer<Uint32>, Pointer<Utf16>, Pointer<Uint32>, Pointer<Utf16>, Pointer<Uint32>, Pointer<Utf16>);
final DRMGetUserInfo = DynamicLibrary.open('msdrm.dll')
    .lookupFunction<DRMGetUserInfoNative, DRMGetUserInfoDart>('DRMGetUserInfo');
// hUser : DWORD -> Uint32
// puUserNameLength : DWORD* in/out -> Pointer<Uint32>
// wszUserName : LPWSTR optional, out -> Pointer<Utf16>
// puUserIdLength : DWORD* in/out -> Pointer<Uint32>
// wszUserId : LPWSTR optional, out -> Pointer<Utf16>
// puUserIdTypeLength : DWORD* in/out -> Pointer<Uint32>
// wszUserIdType : LPWSTR optional, out -> Pointer<Utf16>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function DRMGetUserInfo(
  hUser: DWORD;   // DWORD
  puUserNameLength: Pointer;   // DWORD* in/out
  wszUserName: PWideChar;   // LPWSTR optional, out
  puUserIdLength: Pointer;   // DWORD* in/out
  wszUserId: PWideChar;   // LPWSTR optional, out
  puUserIdTypeLength: Pointer;   // DWORD* in/out
  wszUserIdType: PWideChar   // LPWSTR optional, out
): Integer; stdcall;
  external 'msdrm.dll' name 'DRMGetUserInfo';

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

foreign import stdcall safe "DRMGetUserInfo"
  c_DRMGetUserInfo :: Word32 -> Ptr Word32 -> CWString -> Ptr Word32 -> CWString -> Ptr Word32 -> CWString -> IO Int32
-- hUser : DWORD -> Word32
-- puUserNameLength : DWORD* in/out -> Ptr Word32
-- wszUserName : LPWSTR optional, out -> CWString
-- puUserIdLength : DWORD* in/out -> Ptr Word32
-- wszUserId : LPWSTR optional, out -> CWString
-- puUserIdTypeLength : DWORD* in/out -> Ptr Word32
-- wszUserIdType : LPWSTR optional, out -> 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 drmgetuserinfo =
  foreign "DRMGetUserInfo"
    (uint32_t @-> (ptr uint32_t) @-> (ptr uint16_t) @-> (ptr uint32_t) @-> (ptr uint16_t) @-> (ptr uint32_t) @-> (ptr uint16_t) @-> returning int32_t)
(* hUser : DWORD -> uint32_t *)
(* puUserNameLength : DWORD* in/out -> (ptr uint32_t) *)
(* wszUserName : LPWSTR optional, out -> (ptr uint16_t) *)
(* puUserIdLength : DWORD* in/out -> (ptr uint32_t) *)
(* wszUserId : LPWSTR optional, out -> (ptr uint16_t) *)
(* puUserIdTypeLength : DWORD* in/out -> (ptr uint32_t) *)
(* wszUserIdType : LPWSTR optional, out -> (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 msdrm (t "msdrm.dll"))
(cffi:use-foreign-library msdrm)

(cffi:defcfun ("DRMGetUserInfo" drmget-user-info :convention :stdcall) :int32
  (h-user :uint32)   ; DWORD
  (pu-user-name-length :pointer)   ; DWORD* in/out
  (wsz-user-name :pointer)   ; LPWSTR optional, out
  (pu-user-id-length :pointer)   ; DWORD* in/out
  (wsz-user-id :pointer)   ; LPWSTR optional, out
  (pu-user-id-type-length :pointer)   ; DWORD* in/out
  (wsz-user-id-type :pointer))   ; LPWSTR optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $DRMGetUserInfo = Win32::API::More->new('msdrm',
    'int DRMGetUserInfo(DWORD hUser, LPVOID puUserNameLength, LPWSTR wszUserName, LPVOID puUserIdLength, LPWSTR wszUserId, LPVOID puUserIdTypeLength, LPWSTR wszUserIdType)');
# my $ret = $DRMGetUserInfo->Call($hUser, $puUserNameLength, $wszUserName, $puUserIdLength, $wszUserId, $puUserIdTypeLength, $wszUserIdType);
# hUser : DWORD -> DWORD
# puUserNameLength : DWORD* in/out -> LPVOID
# wszUserName : LPWSTR optional, out -> LPWSTR
# puUserIdLength : DWORD* in/out -> LPVOID
# wszUserId : LPWSTR optional, out -> LPWSTR
# puUserIdTypeLength : DWORD* in/out -> LPVOID
# wszUserIdType : LPWSTR optional, out -> LPWSTR
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。