lineCreateAgentW

// TAPI32.dll  (Unicode / -W)
#include <windows.h>

INT lineCreateAgentW(
    DWORD hLine,
    LPCWSTR lpszAgentID,   // optional
    LPCWSTR lpszAgentPIN,   // optional
    DWORD* lphAgent
);

<DllImport("TAPI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function lineCreateAgentW(
    hLine As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpszAgentID As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> lpszAgentPIN As String,   ' LPCWSTR optional
    ByRef lphAgent As UInteger   ' DWORD* in/out
) As Integer
End Function

' hLine : DWORD
' lpszAgentID : LPCWSTR optional
' lpszAgentPIN : LPCWSTR optional
' lphAgent : DWORD* in/out
Declare PtrSafe Function lineCreateAgentW Lib "tapi32" ( _
    ByVal hLine As Long, _
    ByVal lpszAgentID As LongPtr, _
    ByVal lpszAgentPIN As LongPtr, _
    ByRef lphAgent 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

lineCreateAgentW = ctypes.windll.tapi32.lineCreateAgentW
lineCreateAgentW.restype = ctypes.c_int
lineCreateAgentW.argtypes = [
    wintypes.DWORD,  # hLine : DWORD
    wintypes.LPCWSTR,  # lpszAgentID : LPCWSTR optional
    wintypes.LPCWSTR,  # lpszAgentPIN : LPCWSTR optional
    ctypes.POINTER(wintypes.DWORD),  # lphAgent : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('TAPI32.dll')
lineCreateAgentW = Fiddle::Function.new(
  lib['lineCreateAgentW'],
  [
    -Fiddle::TYPE_INT,  # hLine : DWORD
    Fiddle::TYPE_VOIDP,  # lpszAgentID : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lpszAgentPIN : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lphAgent : DWORD* in/out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "tapi32")]
extern "system" {
    fn lineCreateAgentW(
        hLine: u32,  // DWORD
        lpszAgentID: *const u16,  // LPCWSTR optional
        lpszAgentPIN: *const u16,  // LPCWSTR optional
        lphAgent: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("TAPI32.dll", CharSet = CharSet.Unicode)]
public static extern int lineCreateAgentW(uint hLine, [MarshalAs(UnmanagedType.LPWStr)] string lpszAgentID, [MarshalAs(UnmanagedType.LPWStr)] string lpszAgentPIN, ref uint lphAgent);
"@
$api = Add-Type -MemberDefinition $sig -Name 'TAPI32_lineCreateAgentW' -Namespace Win32 -PassThru
# $api::lineCreateAgentW(hLine, lpszAgentID, lpszAgentPIN, lphAgent)

#uselib "TAPI32.dll"
#func global lineCreateAgentW "lineCreateAgentW" wptr, wptr, wptr, wptr
; lineCreateAgentW hLine, lpszAgentID, lpszAgentPIN, varptr(lphAgent)   ; 戻り値は stat
; hLine : DWORD -> "wptr"
; lpszAgentID : LPCWSTR optional -> "wptr"
; lpszAgentPIN : LPCWSTR optional -> "wptr"
; lphAgent : DWORD* in/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。

#uselib "TAPI32.dll"
#cfunc global lineCreateAgentW "lineCreateAgentW" int, wstr, wstr, var
; res = lineCreateAgentW(hLine, lpszAgentID, lpszAgentPIN, lphAgent)
; hLine : DWORD -> "int"
; lpszAgentID : LPCWSTR optional -> "wstr"
; lpszAgentPIN : LPCWSTR optional -> "wstr"
; lphAgent : DWORD* in/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。

; INT lineCreateAgentW(DWORD hLine, LPCWSTR lpszAgentID, LPCWSTR lpszAgentPIN, DWORD* lphAgent)
#uselib "TAPI32.dll"
#cfunc global lineCreateAgentW "lineCreateAgentW" int, wstr, wstr, var
; res = lineCreateAgentW(hLine, lpszAgentID, lpszAgentPIN, lphAgent)
; hLine : DWORD -> "int"
; lpszAgentID : LPCWSTR optional -> "wstr"
; lpszAgentPIN : LPCWSTR optional -> "wstr"
; lphAgent : DWORD* in/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。

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

var (
	tapi32 = windows.NewLazySystemDLL("TAPI32.dll")
	proclineCreateAgentW = tapi32.NewProc("lineCreateAgentW")
)

// hLine (DWORD), lpszAgentID (LPCWSTR optional), lpszAgentPIN (LPCWSTR optional), lphAgent (DWORD* in/out)
r1, _, err := proclineCreateAgentW.Call(
	uintptr(hLine),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszAgentID))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszAgentPIN))),
	uintptr(lphAgent),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function lineCreateAgentW(
  hLine: DWORD;   // DWORD
  lpszAgentID: PWideChar;   // LPCWSTR optional
  lpszAgentPIN: PWideChar;   // LPCWSTR optional
  lphAgent: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'TAPI32.dll' name 'lineCreateAgentW';

result := DllCall("TAPI32\lineCreateAgentW"
    , "UInt", hLine   ; DWORD
    , "WStr", lpszAgentID   ; LPCWSTR optional
    , "WStr", lpszAgentPIN   ; LPCWSTR optional
    , "Ptr", lphAgent   ; DWORD* in/out
    , "Int")   ; return: INT

●lineCreateAgentW(hLine, lpszAgentID, lpszAgentPIN, lphAgent) = DLL("TAPI32.dll", "int lineCreateAgentW(dword, char*, char*, void*)")
# 呼び出し: lineCreateAgentW(hLine, lpszAgentID, lpszAgentPIN, lphAgent)
# hLine : DWORD -> "dword"
# lpszAgentID : LPCWSTR optional -> "char*"
# lpszAgentPIN : LPCWSTR optional -> "char*"
# lphAgent : DWORD* in/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。