linePrepareAddToConference

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

INT linePrepareAddToConference(
    DWORD hConfCall,
    DWORD* lphConsultCall,
    const LINECALLPARAMS* lpCallParams
);

<DllImport("TAPI32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function linePrepareAddToConference(
    hConfCall As UInteger,   ' DWORD
    ByRef lphConsultCall As UInteger,   ' DWORD* in/out
    lpCallParams As IntPtr   ' LINECALLPARAMS*
) As Integer
End Function

' hConfCall : DWORD
' lphConsultCall : DWORD* in/out
' lpCallParams : LINECALLPARAMS*
Declare PtrSafe Function linePrepareAddToConference Lib "tapi32" ( _
    ByVal hConfCall As Long, _
    ByRef lphConsultCall As Long, _
    ByVal lpCallParams As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

linePrepareAddToConference = ctypes.windll.tapi32.linePrepareAddToConference
linePrepareAddToConference.restype = ctypes.c_int
linePrepareAddToConference.argtypes = [
    wintypes.DWORD,  # hConfCall : DWORD
    ctypes.POINTER(wintypes.DWORD),  # lphConsultCall : DWORD* in/out
    ctypes.c_void_p,  # lpCallParams : LINECALLPARAMS*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('TAPI32.dll')
linePrepareAddToConference = Fiddle::Function.new(
  lib['linePrepareAddToConference'],
  [
    -Fiddle::TYPE_INT,  # hConfCall : DWORD
    Fiddle::TYPE_VOIDP,  # lphConsultCall : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # lpCallParams : LINECALLPARAMS*
  ],
  Fiddle::TYPE_INT)

#[link(name = "tapi32")]
extern "system" {
    fn linePrepareAddToConference(
        hConfCall: u32,  // DWORD
        lphConsultCall: *mut u32,  // DWORD* in/out
        lpCallParams: *const LINECALLPARAMS  // LINECALLPARAMS*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("TAPI32.dll", CharSet = CharSet.Ansi)]
public static extern int linePrepareAddToConference(uint hConfCall, ref uint lphConsultCall, IntPtr lpCallParams);
"@
$api = Add-Type -MemberDefinition $sig -Name 'TAPI32_linePrepareAddToConference' -Namespace Win32 -PassThru
# $api::linePrepareAddToConference(hConfCall, lphConsultCall, lpCallParams)

#uselib "TAPI32.dll"
#func global linePrepareAddToConference "linePrepareAddToConference" sptr, sptr, sptr
; linePrepareAddToConference hConfCall, varptr(lphConsultCall), varptr(lpCallParams)   ; 戻り値は stat
; hConfCall : DWORD -> "sptr"
; lphConsultCall : DWORD* in/out -> "sptr"
; lpCallParams : LINECALLPARAMS* -> "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 linePrepareAddToConference "linePrepareAddToConference" int, var, var
; res = linePrepareAddToConference(hConfCall, lphConsultCall, lpCallParams)
; hConfCall : DWORD -> "int"
; lphConsultCall : DWORD* in/out -> "var"
; lpCallParams : LINECALLPARAMS* -> "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 linePrepareAddToConference(DWORD hConfCall, DWORD* lphConsultCall, LINECALLPARAMS* lpCallParams)
#uselib "TAPI32.dll"
#cfunc global linePrepareAddToConference "linePrepareAddToConference" int, var, var
; res = linePrepareAddToConference(hConfCall, lphConsultCall, lpCallParams)
; hConfCall : DWORD -> "int"
; lphConsultCall : DWORD* in/out -> "var"
; lpCallParams : LINECALLPARAMS* -> "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")
	proclinePrepareAddToConference = tapi32.NewProc("linePrepareAddToConference")
)

// hConfCall (DWORD), lphConsultCall (DWORD* in/out), lpCallParams (LINECALLPARAMS*)
r1, _, err := proclinePrepareAddToConference.Call(
	uintptr(hConfCall),
	uintptr(lphConsultCall),
	uintptr(lpCallParams),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function linePrepareAddToConference(
  hConfCall: DWORD;   // DWORD
  lphConsultCall: Pointer;   // DWORD* in/out
  lpCallParams: Pointer   // LINECALLPARAMS*
): Integer; stdcall;
  external 'TAPI32.dll' name 'linePrepareAddToConference';

result := DllCall("TAPI32\linePrepareAddToConference"
    , "UInt", hConfCall   ; DWORD
    , "Ptr", lphConsultCall   ; DWORD* in/out
    , "Ptr", lpCallParams   ; LINECALLPARAMS*
    , "Int")   ; return: INT

●linePrepareAddToConference(hConfCall, lphConsultCall, lpCallParams) = DLL("TAPI32.dll", "int linePrepareAddToConference(dword, void*, void*)")
# 呼び出し: linePrepareAddToConference(hConfCall, lphConsultCall, lpCallParams)
# hConfCall : DWORD -> "dword"
# lphConsultCall : DWORD* in/out -> "void*"
# lpCallParams : LINECALLPARAMS* -> "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)。