GetTempFileNameW

// KERNEL32.dll  (Unicode / -W)
#include <windows.h>

DWORD GetTempFileNameW(
    LPCWSTR lpPathName,
    LPCWSTR lpPrefixString,
    DWORD uUnique,
    LPWSTR lpTempFileName
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetTempFileNameW(
    <MarshalAs(UnmanagedType.LPWStr)> lpPathName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpPrefixString As String,   ' LPCWSTR
    uUnique As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpTempFileName As System.Text.StringBuilder   ' LPWSTR out
) As UInteger
End Function

' lpPathName : LPCWSTR
' lpPrefixString : LPCWSTR
' uUnique : DWORD
' lpTempFileName : LPWSTR out
Declare PtrSafe Function GetTempFileNameW Lib "kernel32" ( _
    ByVal lpPathName As LongPtr, _
    ByVal lpPrefixString As LongPtr, _
    ByVal uUnique As Long, _
    ByVal lpTempFileName As LongPtr) 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

GetTempFileNameW = ctypes.windll.kernel32.GetTempFileNameW
GetTempFileNameW.restype = wintypes.DWORD
GetTempFileNameW.argtypes = [
    wintypes.LPCWSTR,  # lpPathName : LPCWSTR
    wintypes.LPCWSTR,  # lpPrefixString : LPCWSTR
    wintypes.DWORD,  # uUnique : DWORD
    wintypes.LPWSTR,  # lpTempFileName : LPWSTR out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetTempFileNameW = Fiddle::Function.new(
  lib['GetTempFileNameW'],
  [
    Fiddle::TYPE_VOIDP,  # lpPathName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpPrefixString : LPCWSTR
    -Fiddle::TYPE_INT,  # uUnique : DWORD
    Fiddle::TYPE_VOIDP,  # lpTempFileName : LPWSTR out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "kernel32")]
extern "system" {
    fn GetTempFileNameW(
        lpPathName: *const u16,  // LPCWSTR
        lpPrefixString: *const u16,  // LPCWSTR
        uUnique: u32,  // DWORD
        lpTempFileName: *mut u16  // LPWSTR out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern uint GetTempFileNameW([MarshalAs(UnmanagedType.LPWStr)] string lpPathName, [MarshalAs(UnmanagedType.LPWStr)] string lpPrefixString, uint uUnique, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpTempFileName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetTempFileNameW' -Namespace Win32 -PassThru
# $api::GetTempFileNameW(lpPathName, lpPrefixString, uUnique, lpTempFileName)

#uselib "KERNEL32.dll"
#func global GetTempFileNameW "GetTempFileNameW" wptr, wptr, wptr, wptr
; GetTempFileNameW lpPathName, lpPrefixString, uUnique, varptr(lpTempFileName)   ; 戻り値は stat
; lpPathName : LPCWSTR -> "wptr"
; lpPrefixString : LPCWSTR -> "wptr"
; uUnique : DWORD -> "wptr"
; lpTempFileName : LPWSTR 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetTempFileNameW = kernel32.NewProc("GetTempFileNameW")
)

// lpPathName (LPCWSTR), lpPrefixString (LPCWSTR), uUnique (DWORD), lpTempFileName (LPWSTR out)
r1, _, err := procGetTempFileNameW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpPathName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpPrefixString))),
	uintptr(uUnique),
	uintptr(lpTempFileName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetTempFileNameW(
  lpPathName: PWideChar;   // LPCWSTR
  lpPrefixString: PWideChar;   // LPCWSTR
  uUnique: DWORD;   // DWORD
  lpTempFileName: PWideChar   // LPWSTR out
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'GetTempFileNameW';

result := DllCall("KERNEL32\GetTempFileNameW"
    , "WStr", lpPathName   ; LPCWSTR
    , "WStr", lpPrefixString   ; LPCWSTR
    , "UInt", uUnique   ; DWORD
    , "Ptr", lpTempFileName   ; LPWSTR out
    , "UInt")   ; return: DWORD

●GetTempFileNameW(lpPathName, lpPrefixString, uUnique, lpTempFileName) = DLL("KERNEL32.dll", "dword GetTempFileNameW(char*, char*, dword, char*)")
# 呼び出し: GetTempFileNameW(lpPathName, lpPrefixString, uUnique, lpTempFileName)
# lpPathName : LPCWSTR -> "char*"
# lpPrefixString : LPCWSTR -> "char*"
# uUnique : DWORD -> "dword"
# lpTempFileName : LPWSTR 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)。
# ※-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 "kernel32" fn GetTempFileNameW(
    lpPathName: [*c]const u16, // LPCWSTR
    lpPrefixString: [*c]const u16, // LPCWSTR
    uUnique: u32, // DWORD
    lpTempFileName: [*c]u16 // LPWSTR out
) callconv(std.os.windows.WINAPI) u32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc GetTempFileNameW(
    lpPathName: WideCString,  # LPCWSTR
    lpPrefixString: WideCString,  # LPCWSTR
    uUnique: uint32,  # DWORD
    lpTempFileName: ptr uint16  # LPWSTR out
): uint32 {.importc: "GetTempFileNameW", stdcall, dynlib: "KERNEL32.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "kernel32");
extern(Windows)
uint GetTempFileNameW(
    const(wchar)* lpPathName,   // LPCWSTR
    const(wchar)* lpPrefixString,   // LPCWSTR
    uint uUnique,   // DWORD
    wchar* lpTempFileName   // LPWSTR out
);

ccall((:GetTempFileNameW, "KERNEL32.dll"), stdcall, UInt32,
      (Cwstring, Cwstring, UInt32, Ptr{UInt16}),
      lpPathName, lpPrefixString, uUnique, lpTempFileName)
# lpPathName : LPCWSTR -> Cwstring
# lpPrefixString : LPCWSTR -> Cwstring
# uUnique : DWORD -> UInt32
# lpTempFileName : LPWSTR out -> Ptr{UInt16}
# 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[[
uint32_t GetTempFileNameW(
    const uint16_t* lpPathName,
    const uint16_t* lpPrefixString,
    uint32_t uUnique,
    uint16_t* lpTempFileName);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.GetTempFileNameW(lpPathName, lpPrefixString, uUnique, lpTempFileName)
-- lpPathName : LPCWSTR
-- lpPrefixString : LPCWSTR
-- uUnique : DWORD
-- lpTempFileName : LPWSTR 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('KERNEL32.dll');
const GetTempFileNameW = lib.func('__stdcall', 'GetTempFileNameW', 'uint32_t', ['str16', 'str16', 'uint32_t', 'uint16_t *']);
// GetTempFileNameW(lpPathName, lpPrefixString, uUnique, lpTempFileName)
// lpPathName : LPCWSTR -> 'str16'
// lpPrefixString : LPCWSTR -> 'str16'
// uUnique : DWORD -> 'uint32_t'
// lpTempFileName : LPWSTR 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("KERNEL32.dll", {
  GetTempFileNameW: { parameters: ["buffer", "buffer", "u32", "buffer"], result: "u32" },
});
// lib.symbols.GetTempFileNameW(lpPathName, lpPrefixString, uUnique, lpTempFileName)
// lpPathName : LPCWSTR -> "buffer"
// lpPrefixString : LPCWSTR -> "buffer"
// uUnique : DWORD -> "u32"
// lpTempFileName : LPWSTR out -> "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
uint32_t GetTempFileNameW(
    const uint16_t* lpPathName,
    const uint16_t* lpPrefixString,
    uint32_t uUnique,
    uint16_t* lpTempFileName);
C, "KERNEL32.dll");
// $ffi->GetTempFileNameW(lpPathName, lpPrefixString, uUnique, lpTempFileName);
// lpPathName : LPCWSTR
// lpPrefixString : LPCWSTR
// uUnique : DWORD
// lpTempFileName : LPWSTR 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 Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class, W32APIOptions.UNICODE_OPTIONS);
    int GetTempFileNameW(
        WString lpPathName,   // LPCWSTR
        WString lpPrefixString,   // LPCWSTR
        int uUnique,   // DWORD
        char[] lpTempFileName   // LPWSTR out
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("kernel32")]
lib LibKERNEL32
  fun GetTempFileNameW = GetTempFileNameW(
    lpPathName : UInt16*,   # LPCWSTR
    lpPrefixString : UInt16*,   # LPCWSTR
    uUnique : UInt32,   # DWORD
    lpTempFileName : UInt16*   # LPWSTR out
  ) : UInt32
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 GetTempFileNameWNative = Uint32 Function(Pointer<Utf16>, Pointer<Utf16>, Uint32, Pointer<Utf16>);
typedef GetTempFileNameWDart = int Function(Pointer<Utf16>, Pointer<Utf16>, int, Pointer<Utf16>);
final GetTempFileNameW = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<GetTempFileNameWNative, GetTempFileNameWDart>('GetTempFileNameW');
// lpPathName : LPCWSTR -> Pointer<Utf16>
// lpPrefixString : LPCWSTR -> Pointer<Utf16>
// uUnique : DWORD -> Uint32
// lpTempFileName : LPWSTR out -> Pointer<Utf16>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetTempFileNameW(
  lpPathName: PWideChar;   // LPCWSTR
  lpPrefixString: PWideChar;   // LPCWSTR
  uUnique: DWORD;   // DWORD
  lpTempFileName: PWideChar   // LPWSTR out
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'GetTempFileNameW';

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

foreign import stdcall safe "GetTempFileNameW"
  c_GetTempFileNameW :: CWString -> CWString -> Word32 -> CWString -> IO Word32
-- lpPathName : LPCWSTR -> CWString
-- lpPrefixString : LPCWSTR -> CWString
-- uUnique : DWORD -> Word32
-- lpTempFileName : LPWSTR 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 gettempfilenamew =
  foreign "GetTempFileNameW"
    ((ptr uint16_t) @-> (ptr uint16_t) @-> uint32_t @-> (ptr uint16_t) @-> returning uint32_t)
(* lpPathName : LPCWSTR -> (ptr uint16_t) *)
(* lpPrefixString : LPCWSTR -> (ptr uint16_t) *)
(* uUnique : DWORD -> uint32_t *)
(* lpTempFileName : LPWSTR 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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("GetTempFileNameW" get-temp-file-name-w :convention :stdcall) :uint32
  (lp-path-name (:string :encoding :utf-16le))   ; LPCWSTR
  (lp-prefix-string (:string :encoding :utf-16le))   ; LPCWSTR
  (u-unique :uint32)   ; DWORD
  (lp-temp-file-name :pointer))   ; LPWSTR out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetTempFileNameW = Win32::API::More->new('KERNEL32',
    'DWORD GetTempFileNameW(LPCWSTR lpPathName, LPCWSTR lpPrefixString, DWORD uUnique, LPWSTR lpTempFileName)');
# my $ret = $GetTempFileNameW->Call($lpPathName, $lpPrefixString, $uUnique, $lpTempFileName);
# lpPathName : LPCWSTR -> LPCWSTR
# lpPrefixString : LPCWSTR -> LPCWSTR
# uUnique : DWORD -> DWORD
# lpTempFileName : LPWSTR out -> LPWSTR
# 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。