lineGetAgentCapsW

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

INT lineGetAgentCapsW(
    DWORD hLineApp,
    DWORD dwDeviceID,
    DWORD dwAddressID,
    DWORD dwAppAPIVersion,
    LINEAGENTCAPS* lpAgentCaps
);

<DllImport("TAPI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function lineGetAgentCapsW(
    hLineApp As UInteger,   ' DWORD
    dwDeviceID As UInteger,   ' DWORD
    dwAddressID As UInteger,   ' DWORD
    dwAppAPIVersion As UInteger,   ' DWORD
    lpAgentCaps As IntPtr   ' LINEAGENTCAPS* in/out
) As Integer
End Function

' hLineApp : DWORD
' dwDeviceID : DWORD
' dwAddressID : DWORD
' dwAppAPIVersion : DWORD
' lpAgentCaps : LINEAGENTCAPS* in/out
Declare PtrSafe Function lineGetAgentCapsW Lib "tapi32" ( _
    ByVal hLineApp As Long, _
    ByVal dwDeviceID As Long, _
    ByVal dwAddressID As Long, _
    ByVal dwAppAPIVersion As Long, _
    ByVal lpAgentCaps 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

lineGetAgentCapsW = ctypes.windll.tapi32.lineGetAgentCapsW
lineGetAgentCapsW.restype = ctypes.c_int
lineGetAgentCapsW.argtypes = [
    wintypes.DWORD,  # hLineApp : DWORD
    wintypes.DWORD,  # dwDeviceID : DWORD
    wintypes.DWORD,  # dwAddressID : DWORD
    wintypes.DWORD,  # dwAppAPIVersion : DWORD
    ctypes.c_void_p,  # lpAgentCaps : LINEAGENTCAPS* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('TAPI32.dll')
lineGetAgentCapsW = Fiddle::Function.new(
  lib['lineGetAgentCapsW'],
  [
    -Fiddle::TYPE_INT,  # hLineApp : DWORD
    -Fiddle::TYPE_INT,  # dwDeviceID : DWORD
    -Fiddle::TYPE_INT,  # dwAddressID : DWORD
    -Fiddle::TYPE_INT,  # dwAppAPIVersion : DWORD
    Fiddle::TYPE_VOIDP,  # lpAgentCaps : LINEAGENTCAPS* in/out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "tapi32")]
extern "system" {
    fn lineGetAgentCapsW(
        hLineApp: u32,  // DWORD
        dwDeviceID: u32,  // DWORD
        dwAddressID: u32,  // DWORD
        dwAppAPIVersion: u32,  // DWORD
        lpAgentCaps: *mut LINEAGENTCAPS  // LINEAGENTCAPS* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("TAPI32.dll", CharSet = CharSet.Unicode)]
public static extern int lineGetAgentCapsW(uint hLineApp, uint dwDeviceID, uint dwAddressID, uint dwAppAPIVersion, IntPtr lpAgentCaps);
"@
$api = Add-Type -MemberDefinition $sig -Name 'TAPI32_lineGetAgentCapsW' -Namespace Win32 -PassThru
# $api::lineGetAgentCapsW(hLineApp, dwDeviceID, dwAddressID, dwAppAPIVersion, lpAgentCaps)

#uselib "TAPI32.dll"
#func global lineGetAgentCapsW "lineGetAgentCapsW" wptr, wptr, wptr, wptr, wptr
; lineGetAgentCapsW hLineApp, dwDeviceID, dwAddressID, dwAppAPIVersion, varptr(lpAgentCaps)   ; 戻り値は stat
; hLineApp : DWORD -> "wptr"
; dwDeviceID : DWORD -> "wptr"
; dwAddressID : DWORD -> "wptr"
; dwAppAPIVersion : DWORD -> "wptr"
; lpAgentCaps : LINEAGENTCAPS* 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 lineGetAgentCapsW "lineGetAgentCapsW" int, int, int, int, var
; res = lineGetAgentCapsW(hLineApp, dwDeviceID, dwAddressID, dwAppAPIVersion, lpAgentCaps)
; hLineApp : DWORD -> "int"
; dwDeviceID : DWORD -> "int"
; dwAddressID : DWORD -> "int"
; dwAppAPIVersion : DWORD -> "int"
; lpAgentCaps : LINEAGENTCAPS* 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 lineGetAgentCapsW(DWORD hLineApp, DWORD dwDeviceID, DWORD dwAddressID, DWORD dwAppAPIVersion, LINEAGENTCAPS* lpAgentCaps)
#uselib "TAPI32.dll"
#cfunc global lineGetAgentCapsW "lineGetAgentCapsW" int, int, int, int, var
; res = lineGetAgentCapsW(hLineApp, dwDeviceID, dwAddressID, dwAppAPIVersion, lpAgentCaps)
; hLineApp : DWORD -> "int"
; dwDeviceID : DWORD -> "int"
; dwAddressID : DWORD -> "int"
; dwAppAPIVersion : DWORD -> "int"
; lpAgentCaps : LINEAGENTCAPS* 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")
	proclineGetAgentCapsW = tapi32.NewProc("lineGetAgentCapsW")
)

// hLineApp (DWORD), dwDeviceID (DWORD), dwAddressID (DWORD), dwAppAPIVersion (DWORD), lpAgentCaps (LINEAGENTCAPS* in/out)
r1, _, err := proclineGetAgentCapsW.Call(
	uintptr(hLineApp),
	uintptr(dwDeviceID),
	uintptr(dwAddressID),
	uintptr(dwAppAPIVersion),
	uintptr(lpAgentCaps),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function lineGetAgentCapsW(
  hLineApp: DWORD;   // DWORD
  dwDeviceID: DWORD;   // DWORD
  dwAddressID: DWORD;   // DWORD
  dwAppAPIVersion: DWORD;   // DWORD
  lpAgentCaps: Pointer   // LINEAGENTCAPS* in/out
): Integer; stdcall;
  external 'TAPI32.dll' name 'lineGetAgentCapsW';

result := DllCall("TAPI32\lineGetAgentCapsW"
    , "UInt", hLineApp   ; DWORD
    , "UInt", dwDeviceID   ; DWORD
    , "UInt", dwAddressID   ; DWORD
    , "UInt", dwAppAPIVersion   ; DWORD
    , "Ptr", lpAgentCaps   ; LINEAGENTCAPS* in/out
    , "Int")   ; return: INT

●lineGetAgentCapsW(hLineApp, dwDeviceID, dwAddressID, dwAppAPIVersion, lpAgentCaps) = DLL("TAPI32.dll", "int lineGetAgentCapsW(dword, dword, dword, dword, void*)")
# 呼び出し: lineGetAgentCapsW(hLineApp, dwDeviceID, dwAddressID, dwAppAPIVersion, lpAgentCaps)
# hLineApp : DWORD -> "dword"
# dwDeviceID : DWORD -> "dword"
# dwAddressID : DWORD -> "dword"
# dwAppAPIVersion : DWORD -> "dword"
# lpAgentCaps : LINEAGENTCAPS* 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。