lineCreateAgentA

// TAPI32.dll  (ANSI / -A)
#include <windows.h>

INT lineCreateAgentA(
    DWORD hLine,
    LPCSTR lpszAgentID,   // optional
    LPCSTR lpszAgentPIN,   // optional
    DWORD* lphAgent
);

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

' hLine : DWORD
' lpszAgentID : LPCSTR optional
' lpszAgentPIN : LPCSTR optional
' lphAgent : DWORD* in/out
Declare PtrSafe Function lineCreateAgentA Lib "tapi32" ( _
    ByVal hLine As Long, _
    ByVal lpszAgentID As String, _
    ByVal lpszAgentPIN As String, _
    ByRef lphAgent As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

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

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('TAPI32.dll')
lineCreateAgentA = Fiddle::Function.new(
  lib['lineCreateAgentA'],
  [
    -Fiddle::TYPE_INT,  # hLine : DWORD
    Fiddle::TYPE_VOIDP,  # lpszAgentID : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # lpszAgentPIN : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # lphAgent : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "tapi32")]
extern "system" {
    fn lineCreateAgentA(
        hLine: u32,  // DWORD
        lpszAgentID: *const u8,  // LPCSTR optional
        lpszAgentPIN: *const u8,  // LPCSTR optional
        lphAgent: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("TAPI32.dll", CharSet = CharSet.Ansi)]
public static extern int lineCreateAgentA(uint hLine, [MarshalAs(UnmanagedType.LPStr)] string lpszAgentID, [MarshalAs(UnmanagedType.LPStr)] string lpszAgentPIN, ref uint lphAgent);
"@
$api = Add-Type -MemberDefinition $sig -Name 'TAPI32_lineCreateAgentA' -Namespace Win32 -PassThru
# $api::lineCreateAgentA(hLine, lpszAgentID, lpszAgentPIN, lphAgent)

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

#uselib "TAPI32.dll"
#cfunc global lineCreateAgentA "lineCreateAgentA" int, str, str, var
; res = lineCreateAgentA(hLine, lpszAgentID, lpszAgentPIN, lphAgent)
; hLine : DWORD -> "int"
; lpszAgentID : LPCSTR optional -> "str"
; lpszAgentPIN : LPCSTR optional -> "str"
; 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 lineCreateAgentA(DWORD hLine, LPCSTR lpszAgentID, LPCSTR lpszAgentPIN, DWORD* lphAgent)
#uselib "TAPI32.dll"
#cfunc global lineCreateAgentA "lineCreateAgentA" int, str, str, var
; res = lineCreateAgentA(hLine, lpszAgentID, lpszAgentPIN, lphAgent)
; hLine : DWORD -> "int"
; lpszAgentID : LPCSTR optional -> "str"
; lpszAgentPIN : LPCSTR optional -> "str"
; 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")
	proclineCreateAgentA = tapi32.NewProc("lineCreateAgentA")
)

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

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

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

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