WTSQueryUserConfigW

// WTSAPI32.dll  (Unicode / -W)
#include <windows.h>

BOOL WTSQueryUserConfigW(
    LPWSTR pServerName,
    LPWSTR pUserName,
    WTS_CONFIG_CLASS WTSConfigClass,
    LPWSTR* ppBuffer,
    DWORD* pBytesReturned
);

<DllImport("WTSAPI32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WTSQueryUserConfigW(
    <MarshalAs(UnmanagedType.LPWStr)> pServerName As String,   ' LPWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pUserName As String,   ' LPWSTR
    WTSConfigClass As Integer,   ' WTS_CONFIG_CLASS
    ppBuffer As IntPtr,   ' LPWSTR* out
    <Out> ByRef pBytesReturned As UInteger   ' DWORD* out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' pServerName : LPWSTR
' pUserName : LPWSTR
' WTSConfigClass : WTS_CONFIG_CLASS
' ppBuffer : LPWSTR* out
' pBytesReturned : DWORD* out
Declare PtrSafe Function WTSQueryUserConfigW Lib "wtsapi32" ( _
    ByVal pServerName As LongPtr, _
    ByVal pUserName As LongPtr, _
    ByVal WTSConfigClass As Long, _
    ByVal ppBuffer As LongPtr, _
    ByRef pBytesReturned As Long) As Long
' 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

WTSQueryUserConfigW = ctypes.windll.wtsapi32.WTSQueryUserConfigW
WTSQueryUserConfigW.restype = wintypes.BOOL
WTSQueryUserConfigW.argtypes = [
    wintypes.LPCWSTR,  # pServerName : LPWSTR
    wintypes.LPCWSTR,  # pUserName : LPWSTR
    ctypes.c_int,  # WTSConfigClass : WTS_CONFIG_CLASS
    ctypes.c_void_p,  # ppBuffer : LPWSTR* out
    ctypes.POINTER(wintypes.DWORD),  # pBytesReturned : DWORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WTSAPI32.dll')
WTSQueryUserConfigW = Fiddle::Function.new(
  lib['WTSQueryUserConfigW'],
  [
    Fiddle::TYPE_VOIDP,  # pServerName : LPWSTR
    Fiddle::TYPE_VOIDP,  # pUserName : LPWSTR
    Fiddle::TYPE_INT,  # WTSConfigClass : WTS_CONFIG_CLASS
    Fiddle::TYPE_VOIDP,  # ppBuffer : LPWSTR* out
    Fiddle::TYPE_VOIDP,  # pBytesReturned : DWORD* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "wtsapi32")]
extern "system" {
    fn WTSQueryUserConfigW(
        pServerName: *mut u16,  // LPWSTR
        pUserName: *mut u16,  // LPWSTR
        WTSConfigClass: i32,  // WTS_CONFIG_CLASS
        ppBuffer: *mut *mut u16,  // LPWSTR* out
        pBytesReturned: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WTSAPI32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool WTSQueryUserConfigW([MarshalAs(UnmanagedType.LPWStr)] string pServerName, [MarshalAs(UnmanagedType.LPWStr)] string pUserName, int WTSConfigClass, IntPtr ppBuffer, out uint pBytesReturned);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WTSAPI32_WTSQueryUserConfigW' -Namespace Win32 -PassThru
# $api::WTSQueryUserConfigW(pServerName, pUserName, WTSConfigClass, ppBuffer, pBytesReturned)

#uselib "WTSAPI32.dll"
#func global WTSQueryUserConfigW "WTSQueryUserConfigW" wptr, wptr, wptr, wptr, wptr
; WTSQueryUserConfigW pServerName, pUserName, WTSConfigClass, varptr(ppBuffer), varptr(pBytesReturned)   ; 戻り値は stat
; pServerName : LPWSTR -> "wptr"
; pUserName : LPWSTR -> "wptr"
; WTSConfigClass : WTS_CONFIG_CLASS -> "wptr"
; ppBuffer : LPWSTR* out -> "wptr"
; pBytesReturned : DWORD* out -> "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 (
	wtsapi32 = windows.NewLazySystemDLL("WTSAPI32.dll")
	procWTSQueryUserConfigW = wtsapi32.NewProc("WTSQueryUserConfigW")
)

// pServerName (LPWSTR), pUserName (LPWSTR), WTSConfigClass (WTS_CONFIG_CLASS), ppBuffer (LPWSTR* out), pBytesReturned (DWORD* out)
r1, _, err := procWTSQueryUserConfigW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pServerName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pUserName))),
	uintptr(WTSConfigClass),
	uintptr(ppBuffer),
	uintptr(pBytesReturned),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function WTSQueryUserConfigW(
  pServerName: PWideChar;   // LPWSTR
  pUserName: PWideChar;   // LPWSTR
  WTSConfigClass: Integer;   // WTS_CONFIG_CLASS
  ppBuffer: PPWideChar;   // LPWSTR* out
  pBytesReturned: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'WTSAPI32.dll' name 'WTSQueryUserConfigW';

result := DllCall("WTSAPI32\WTSQueryUserConfigW"
    , "WStr", pServerName   ; LPWSTR
    , "WStr", pUserName   ; LPWSTR
    , "Int", WTSConfigClass   ; WTS_CONFIG_CLASS
    , "Ptr", ppBuffer   ; LPWSTR* out
    , "Ptr", pBytesReturned   ; DWORD* out
    , "Int")   ; return: BOOL

●WTSQueryUserConfigW(pServerName, pUserName, WTSConfigClass, ppBuffer, pBytesReturned) = DLL("WTSAPI32.dll", "bool WTSQueryUserConfigW(char*, char*, int, void*, void*)")
# 呼び出し: WTSQueryUserConfigW(pServerName, pUserName, WTSConfigClass, ppBuffer, pBytesReturned)
# pServerName : LPWSTR -> "char*"
# pUserName : LPWSTR -> "char*"
# WTSConfigClass : WTS_CONFIG_CLASS -> "int"
# ppBuffer : LPWSTR* out -> "void*"
# pBytesReturned : DWORD* 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)。
# ※-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 "wtsapi32" fn WTSQueryUserConfigW(
    pServerName: [*c]const u16, // LPWSTR
    pUserName: [*c]const u16, // LPWSTR
    WTSConfigClass: i32, // WTS_CONFIG_CLASS
    ppBuffer: [*c][*c]u16, // LPWSTR* out
    pBytesReturned: [*c]u32 // DWORD* out
) callconv(std.os.windows.WINAPI) i32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc WTSQueryUserConfigW(
    pServerName: WideCString,  # LPWSTR
    pUserName: WideCString,  # LPWSTR
    WTSConfigClass: int32,  # WTS_CONFIG_CLASS
    ppBuffer: ptr WideCString,  # LPWSTR* out
    pBytesReturned: ptr uint32  # DWORD* out
): int32 {.importc: "WTSQueryUserConfigW", stdcall, dynlib: "WTSAPI32.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "wtsapi32");
extern(Windows)
int WTSQueryUserConfigW(
    const(wchar)* pServerName,   // LPWSTR
    const(wchar)* pUserName,   // LPWSTR
    int WTSConfigClass,   // WTS_CONFIG_CLASS
    wchar** ppBuffer,   // LPWSTR* out
    uint* pBytesReturned   // DWORD* out
);

ccall((:WTSQueryUserConfigW, "WTSAPI32.dll"), stdcall, Int32,
      (Cwstring, Cwstring, Int32, Ptr{Ptr{UInt16}}, Ptr{UInt32}),
      pServerName, pUserName, WTSConfigClass, ppBuffer, pBytesReturned)
# pServerName : LPWSTR -> Cwstring
# pUserName : LPWSTR -> Cwstring
# WTSConfigClass : WTS_CONFIG_CLASS -> Int32
# ppBuffer : LPWSTR* out -> Ptr{Ptr{UInt16}}
# pBytesReturned : DWORD* out -> Ptr{UInt32}
# 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[[
int32_t WTSQueryUserConfigW(
    const uint16_t* pServerName,
    const uint16_t* pUserName,
    int32_t WTSConfigClass,
    uint16_t** ppBuffer,
    uint32_t* pBytesReturned);
]]
local wtsapi32 = ffi.load("wtsapi32")
-- wtsapi32.WTSQueryUserConfigW(pServerName, pUserName, WTSConfigClass, ppBuffer, pBytesReturned)
-- pServerName : LPWSTR
-- pUserName : LPWSTR
-- WTSConfigClass : WTS_CONFIG_CLASS
-- ppBuffer : LPWSTR* out
-- pBytesReturned : DWORD* 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。
-- 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('WTSAPI32.dll');
const WTSQueryUserConfigW = lib.func('__stdcall', 'WTSQueryUserConfigW', 'int32_t', ['str16', 'str16', 'int32_t', 'void *', 'uint32_t *']);
// WTSQueryUserConfigW(pServerName, pUserName, WTSConfigClass, ppBuffer, pBytesReturned)
// pServerName : LPWSTR -> 'str16'
// pUserName : LPWSTR -> 'str16'
// WTSConfigClass : WTS_CONFIG_CLASS -> 'int32_t'
// ppBuffer : LPWSTR* out -> 'void *'
// pBytesReturned : DWORD* out -> 'uint32_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("WTSAPI32.dll", {
  WTSQueryUserConfigW: { parameters: ["buffer", "buffer", "i32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.WTSQueryUserConfigW(pServerName, pUserName, WTSConfigClass, ppBuffer, pBytesReturned)
// pServerName : LPWSTR -> "buffer"
// pUserName : LPWSTR -> "buffer"
// WTSConfigClass : WTS_CONFIG_CLASS -> "i32"
// ppBuffer : LPWSTR* out -> "pointer"
// pBytesReturned : DWORD* out -> "pointer"
// 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
int32_t WTSQueryUserConfigW(
    const uint16_t* pServerName,
    const uint16_t* pUserName,
    int32_t WTSConfigClass,
    uint16_t** ppBuffer,
    uint32_t* pBytesReturned);
C, "WTSAPI32.dll");
// $ffi->WTSQueryUserConfigW(pServerName, pUserName, WTSConfigClass, ppBuffer, pBytesReturned);
// pServerName : LPWSTR
// pUserName : LPWSTR
// WTSConfigClass : WTS_CONFIG_CLASS
// ppBuffer : LPWSTR* out
// pBytesReturned : DWORD* 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 Wtsapi32 extends StdCallLibrary {
    Wtsapi32 INSTANCE = Native.load("wtsapi32", Wtsapi32.class, W32APIOptions.UNICODE_OPTIONS);
    boolean WTSQueryUserConfigW(
        WString pServerName,   // LPWSTR
        WString pUserName,   // LPWSTR
        int WTSConfigClass,   // WTS_CONFIG_CLASS
        PointerByReference ppBuffer,   // LPWSTR* out
        IntByReference pBytesReturned   // DWORD* out
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("wtsapi32")]
lib LibWTSAPI32
  fun WTSQueryUserConfigW = WTSQueryUserConfigW(
    pServerName : UInt16*,   # LPWSTR
    pUserName : UInt16*,   # LPWSTR
    WTSConfigClass : Int32,   # WTS_CONFIG_CLASS
    ppBuffer : UInt16**,   # LPWSTR* out
    pBytesReturned : UInt32*   # DWORD* 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 WTSQueryUserConfigWNative = Int32 Function(Pointer<Utf16>, Pointer<Utf16>, Int32, Pointer<Pointer<Utf16>>, Pointer<Uint32>);
typedef WTSQueryUserConfigWDart = int Function(Pointer<Utf16>, Pointer<Utf16>, int, Pointer<Pointer<Utf16>>, Pointer<Uint32>);
final WTSQueryUserConfigW = DynamicLibrary.open('WTSAPI32.dll')
    .lookupFunction<WTSQueryUserConfigWNative, WTSQueryUserConfigWDart>('WTSQueryUserConfigW');
// pServerName : LPWSTR -> Pointer<Utf16>
// pUserName : LPWSTR -> Pointer<Utf16>
// WTSConfigClass : WTS_CONFIG_CLASS -> Int32
// ppBuffer : LPWSTR* out -> Pointer<Pointer<Utf16>>
// pBytesReturned : DWORD* out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WTSQueryUserConfigW(
  pServerName: PWideChar;   // LPWSTR
  pUserName: PWideChar;   // LPWSTR
  WTSConfigClass: Integer;   // WTS_CONFIG_CLASS
  ppBuffer: PPWideChar;   // LPWSTR* out
  pBytesReturned: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'WTSAPI32.dll' name 'WTSQueryUserConfigW';

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

foreign import stdcall safe "WTSQueryUserConfigW"
  c_WTSQueryUserConfigW :: CWString -> CWString -> Int32 -> Ptr CWString -> Ptr Word32 -> IO CInt
-- pServerName : LPWSTR -> CWString
-- pUserName : LPWSTR -> CWString
-- WTSConfigClass : WTS_CONFIG_CLASS -> Int32
-- ppBuffer : LPWSTR* out -> Ptr CWString
-- pBytesReturned : DWORD* out -> Ptr Word32
-- 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 wtsqueryuserconfigw =
  foreign "WTSQueryUserConfigW"
    ((ptr uint16_t) @-> (ptr uint16_t) @-> int32_t @-> (ptr (ptr uint16_t)) @-> (ptr uint32_t) @-> returning int32_t)
(* pServerName : LPWSTR -> (ptr uint16_t) *)
(* pUserName : LPWSTR -> (ptr uint16_t) *)
(* WTSConfigClass : WTS_CONFIG_CLASS -> int32_t *)
(* ppBuffer : LPWSTR* out -> (ptr (ptr uint16_t)) *)
(* pBytesReturned : DWORD* out -> (ptr uint32_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 wtsapi32 (t "WTSAPI32.dll"))
(cffi:use-foreign-library wtsapi32)

(cffi:defcfun ("WTSQueryUserConfigW" wtsquery-user-config-w :convention :stdcall) :int32
  (p-server-name (:string :encoding :utf-16le))   ; LPWSTR
  (p-user-name (:string :encoding :utf-16le))   ; LPWSTR
  (wtsconfig-class :int32)   ; WTS_CONFIG_CLASS
  (pp-buffer :pointer)   ; LPWSTR* out
  (p-bytes-returned :pointer))   ; DWORD* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WTSQueryUserConfigW = Win32::API::More->new('WTSAPI32',
    'BOOL WTSQueryUserConfigW(LPCWSTR pServerName, LPCWSTR pUserName, int WTSConfigClass, LPVOID ppBuffer, LPVOID pBytesReturned)');
# my $ret = $WTSQueryUserConfigW->Call($pServerName, $pUserName, $WTSConfigClass, $ppBuffer, $pBytesReturned);
# pServerName : LPWSTR -> LPCWSTR
# pUserName : LPWSTR -> LPCWSTR
# WTSConfigClass : WTS_CONFIG_CLASS -> int
# ppBuffer : LPWSTR* out -> LPVOID
# pBytesReturned : DWORD* out -> LPVOID
# 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。