FaxSetRoutingInfoW

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

BOOL FaxSetRoutingInfoW(
    HANDLE FaxPortHandle,
    LPCWSTR RoutingGuid,
    const BYTE* RoutingInfoBuffer,
    DWORD RoutingInfoBufferSize
);

<DllImport("WINFAX.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function FaxSetRoutingInfoW(
    FaxPortHandle As IntPtr,   ' HANDLE
    <MarshalAs(UnmanagedType.LPWStr)> RoutingGuid As String,   ' LPCWSTR
    RoutingInfoBuffer As IntPtr,   ' BYTE*
    RoutingInfoBufferSize As UInteger   ' DWORD
) As Boolean
End Function

' FaxPortHandle : HANDLE
' RoutingGuid : LPCWSTR
' RoutingInfoBuffer : BYTE*
' RoutingInfoBufferSize : DWORD
Declare PtrSafe Function FaxSetRoutingInfoW Lib "winfax" ( _
    ByVal FaxPortHandle As LongPtr, _
    ByVal RoutingGuid As LongPtr, _
    ByVal RoutingInfoBuffer As LongPtr, _
    ByVal RoutingInfoBufferSize 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

FaxSetRoutingInfoW = ctypes.windll.winfax.FaxSetRoutingInfoW
FaxSetRoutingInfoW.restype = wintypes.BOOL
FaxSetRoutingInfoW.argtypes = [
    wintypes.HANDLE,  # FaxPortHandle : HANDLE
    wintypes.LPCWSTR,  # RoutingGuid : LPCWSTR
    ctypes.POINTER(ctypes.c_ubyte),  # RoutingInfoBuffer : BYTE*
    wintypes.DWORD,  # RoutingInfoBufferSize : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINFAX.dll')
FaxSetRoutingInfoW = Fiddle::Function.new(
  lib['FaxSetRoutingInfoW'],
  [
    Fiddle::TYPE_VOIDP,  # FaxPortHandle : HANDLE
    Fiddle::TYPE_VOIDP,  # RoutingGuid : LPCWSTR
    Fiddle::TYPE_VOIDP,  # RoutingInfoBuffer : BYTE*
    -Fiddle::TYPE_INT,  # RoutingInfoBufferSize : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winfax")]
extern "system" {
    fn FaxSetRoutingInfoW(
        FaxPortHandle: *mut core::ffi::c_void,  // HANDLE
        RoutingGuid: *const u16,  // LPCWSTR
        RoutingInfoBuffer: *const u8,  // BYTE*
        RoutingInfoBufferSize: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WINFAX.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool FaxSetRoutingInfoW(IntPtr FaxPortHandle, [MarshalAs(UnmanagedType.LPWStr)] string RoutingGuid, IntPtr RoutingInfoBuffer, uint RoutingInfoBufferSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINFAX_FaxSetRoutingInfoW' -Namespace Win32 -PassThru
# $api::FaxSetRoutingInfoW(FaxPortHandle, RoutingGuid, RoutingInfoBuffer, RoutingInfoBufferSize)

#uselib "WINFAX.dll"
#func global FaxSetRoutingInfoW "FaxSetRoutingInfoW" wptr, wptr, wptr, wptr
; FaxSetRoutingInfoW FaxPortHandle, RoutingGuid, varptr(RoutingInfoBuffer), RoutingInfoBufferSize   ; 戻り値は stat
; FaxPortHandle : HANDLE -> "wptr"
; RoutingGuid : LPCWSTR -> "wptr"
; RoutingInfoBuffer : BYTE* -> "wptr"
; RoutingInfoBufferSize : DWORD -> "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。

#uselib "WINFAX.dll"
#cfunc global FaxSetRoutingInfoW "FaxSetRoutingInfoW" sptr, wstr, var, int
; res = FaxSetRoutingInfoW(FaxPortHandle, RoutingGuid, RoutingInfoBuffer, RoutingInfoBufferSize)
; FaxPortHandle : HANDLE -> "sptr"
; RoutingGuid : LPCWSTR -> "wstr"
; RoutingInfoBuffer : BYTE* -> "var"
; RoutingInfoBufferSize : DWORD -> "int"
; ※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。

; BOOL FaxSetRoutingInfoW(HANDLE FaxPortHandle, LPCWSTR RoutingGuid, BYTE* RoutingInfoBuffer, DWORD RoutingInfoBufferSize)
#uselib "WINFAX.dll"
#cfunc global FaxSetRoutingInfoW "FaxSetRoutingInfoW" intptr, wstr, var, int
; res = FaxSetRoutingInfoW(FaxPortHandle, RoutingGuid, RoutingInfoBuffer, RoutingInfoBufferSize)
; FaxPortHandle : HANDLE -> "intptr"
; RoutingGuid : LPCWSTR -> "wstr"
; RoutingInfoBuffer : BYTE* -> "var"
; RoutingInfoBufferSize : DWORD -> "int"
; ※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。

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

var (
	winfax = windows.NewLazySystemDLL("WINFAX.dll")
	procFaxSetRoutingInfoW = winfax.NewProc("FaxSetRoutingInfoW")
)

// FaxPortHandle (HANDLE), RoutingGuid (LPCWSTR), RoutingInfoBuffer (BYTE*), RoutingInfoBufferSize (DWORD)
r1, _, err := procFaxSetRoutingInfoW.Call(
	uintptr(FaxPortHandle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(RoutingGuid))),
	uintptr(RoutingInfoBuffer),
	uintptr(RoutingInfoBufferSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function FaxSetRoutingInfoW(
  FaxPortHandle: THandle;   // HANDLE
  RoutingGuid: PWideChar;   // LPCWSTR
  RoutingInfoBuffer: Pointer;   // BYTE*
  RoutingInfoBufferSize: DWORD   // DWORD
): BOOL; stdcall;
  external 'WINFAX.dll' name 'FaxSetRoutingInfoW';

result := DllCall("WINFAX\FaxSetRoutingInfoW"
    , "Ptr", FaxPortHandle   ; HANDLE
    , "WStr", RoutingGuid   ; LPCWSTR
    , "Ptr", RoutingInfoBuffer   ; BYTE*
    , "UInt", RoutingInfoBufferSize   ; DWORD
    , "Int")   ; return: BOOL

●FaxSetRoutingInfoW(FaxPortHandle, RoutingGuid, RoutingInfoBuffer, RoutingInfoBufferSize) = DLL("WINFAX.dll", "bool FaxSetRoutingInfoW(void*, char*, void*, dword)")
# 呼び出し: FaxSetRoutingInfoW(FaxPortHandle, RoutingGuid, RoutingInfoBuffer, RoutingInfoBufferSize)
# FaxPortHandle : HANDLE -> "void*"
# RoutingGuid : LPCWSTR -> "char*"
# RoutingInfoBuffer : BYTE* -> "void*"
# RoutingInfoBufferSize : 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。