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DtcGetTransactionManagerC

関数

MS DTCのトランザクションマネージャーをC呼び出し規約で取得する。

DLLXOLEHLP.dll呼出規約cdecl

シグネチャ

// XOLEHLP.dll
#include <windows.h>

HRESULT DtcGetTransactionManagerC(
    LPSTR i_pszHost,   // optional
    LPSTR i_pszTmName,   // optional
    const GUID* i_riid,
    DWORD i_dwReserved1,
    WORD i_wcbReserved2,
    void* i_pvReserved2,   // optional
    void** o_ppvObject
);

パラメーター

名前	型	方向	説明
i_pszHost	LPSTR	inoptional	DTCが動作するホスト名を指すANSI文字列。ローカルの場合はNULL可。
i_pszTmName	LPSTR	inoptional	トランザクションマネージャ名を指すANSI文字列。通常はNULL可。
i_riid	GUID*	in	要求するインターフェイスのIID(GUID)へのポインタ。
i_dwReserved1	DWORD	in	予約済みパラメータ。0を指定する。
i_wcbReserved2	WORD	in	予約済みパラメータ。0を指定する。
i_pvReserved2	void*	inoptional	予約済みパラメータ。NULLを指定する。
o_ppvObject	void**	inout	要求したインターフェイスポインタを受け取る出力ポインタ。

戻り値の型: HRESULT

各言語での呼び出し定義

// XOLEHLP.dll
#include <windows.h>

HRESULT DtcGetTransactionManagerC(
    LPSTR i_pszHost,   // optional
    LPSTR i_pszTmName,   // optional
    const GUID* i_riid,
    DWORD i_dwReserved1,
    WORD i_wcbReserved2,
    void* i_pvReserved2,   // optional
    void** o_ppvObject
);

[DllImport("XOLEHLP.dll", ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
static extern int DtcGetTransactionManagerC(
    [MarshalAs(UnmanagedType.LPStr)] string i_pszHost,   // LPSTR optional
    [MarshalAs(UnmanagedType.LPStr)] string i_pszTmName,   // LPSTR optional
    ref Guid i_riid,   // GUID*
    uint i_dwReserved1,   // DWORD
    ushort i_wcbReserved2,   // WORD
    IntPtr i_pvReserved2,   // void* optional
    IntPtr o_ppvObject   // void** in/out
);

<DllImport("XOLEHLP.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function DtcGetTransactionManagerC(
    <MarshalAs(UnmanagedType.LPStr)> i_pszHost As String,   ' LPSTR optional
    <MarshalAs(UnmanagedType.LPStr)> i_pszTmName As String,   ' LPSTR optional
    ByRef i_riid As Guid,   ' GUID*
    i_dwReserved1 As UInteger,   ' DWORD
    i_wcbReserved2 As UShort,   ' WORD
    i_pvReserved2 As IntPtr,   ' void* optional
    o_ppvObject As IntPtr   ' void** in/out
) As Integer
End Function

' i_pszHost : LPSTR optional
' i_pszTmName : LPSTR optional
' i_riid : GUID*
' i_dwReserved1 : DWORD
' i_wcbReserved2 : WORD
' i_pvReserved2 : void* optional
' o_ppvObject : void** in/out
Declare PtrSafe Function DtcGetTransactionManagerC Lib "xolehlp" ( _
    ByVal i_pszHost As String, _
    ByVal i_pszTmName As String, _
    ByVal i_riid As LongPtr, _
    ByVal i_dwReserved1 As Long, _
    ByVal i_wcbReserved2 As Integer, _
    ByVal i_pvReserved2 As LongPtr, _
    ByVal o_ppvObject 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

DtcGetTransactionManagerC = ctypes.cdll.xolehlp.DtcGetTransactionManagerC
DtcGetTransactionManagerC.restype = ctypes.c_int
DtcGetTransactionManagerC.argtypes = [
    wintypes.LPCSTR,  # i_pszHost : LPSTR optional
    wintypes.LPCSTR,  # i_pszTmName : LPSTR optional
    ctypes.c_void_p,  # i_riid : GUID*
    wintypes.DWORD,  # i_dwReserved1 : DWORD
    ctypes.c_ushort,  # i_wcbReserved2 : WORD
    ctypes.POINTER(None),  # i_pvReserved2 : void* optional
    ctypes.c_void_p,  # o_ppvObject : void** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('XOLEHLP.dll')
DtcGetTransactionManagerC = Fiddle::Function.new(
  lib['DtcGetTransactionManagerC'],
  [
    Fiddle::TYPE_VOIDP,  # i_pszHost : LPSTR optional
    Fiddle::TYPE_VOIDP,  # i_pszTmName : LPSTR optional
    Fiddle::TYPE_VOIDP,  # i_riid : GUID*
    -Fiddle::TYPE_INT,  # i_dwReserved1 : DWORD
    -Fiddle::TYPE_SHORT,  # i_wcbReserved2 : WORD
    Fiddle::TYPE_VOIDP,  # i_pvReserved2 : void* optional
    Fiddle::TYPE_VOIDP,  # o_ppvObject : void** in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "xolehlp")]
extern "C" {
    fn DtcGetTransactionManagerC(
        i_pszHost: *mut u8,  // LPSTR optional
        i_pszTmName: *mut u8,  // LPSTR optional
        i_riid: *const GUID,  // GUID*
        i_dwReserved1: u32,  // DWORD
        i_wcbReserved2: u16,  // WORD
        i_pvReserved2: *mut (),  // void* optional
        o_ppvObject: *mut *mut ()  // void** in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("XOLEHLP.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int DtcGetTransactionManagerC([MarshalAs(UnmanagedType.LPStr)] string i_pszHost, [MarshalAs(UnmanagedType.LPStr)] string i_pszTmName, ref Guid i_riid, uint i_dwReserved1, ushort i_wcbReserved2, IntPtr i_pvReserved2, IntPtr o_ppvObject);
"@
$api = Add-Type -MemberDefinition $sig -Name 'XOLEHLP_DtcGetTransactionManagerC' -Namespace Win32 -PassThru
# $api::DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)

#uselib "XOLEHLP.dll"
#func global DtcGetTransactionManagerC "DtcGetTransactionManagerC" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; DtcGetTransactionManagerC i_pszHost, i_pszTmName, varptr(i_riid), i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject   ; 戻り値は stat
; i_pszHost : LPSTR optional -> "sptr"
; i_pszTmName : LPSTR optional -> "sptr"
; i_riid : GUID* -> "sptr"
; i_dwReserved1 : DWORD -> "sptr"
; i_wcbReserved2 : WORD -> "sptr"
; i_pvReserved2 : void* optional -> "sptr"
; o_ppvObject : void** 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。

出力引数:

#uselib "XOLEHLP.dll"
#cfunc global DtcGetTransactionManagerC "DtcGetTransactionManagerC" str, str, var, int, int, sptr, sptr
; res = DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
; i_pszHost : LPSTR optional -> "str"
; i_pszTmName : LPSTR optional -> "str"
; i_riid : GUID* -> "var"
; i_dwReserved1 : DWORD -> "int"
; i_wcbReserved2 : WORD -> "int"
; i_pvReserved2 : void* optional -> "sptr"
; o_ppvObject : void** in/out -> "sptr"
; ※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。#uselib "XOLEHLP.dll"
#cfunc global DtcGetTransactionManagerC "DtcGetTransactionManagerC" str, str, sptr, int, int, sptr, sptr
; res = DtcGetTransactionManagerC(i_pszHost, i_pszTmName, varptr(i_riid), i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
; i_pszHost : LPSTR optional -> "str"
; i_pszTmName : LPSTR optional -> "str"
; i_riid : GUID* -> "sptr"
; i_dwReserved1 : DWORD -> "int"
; i_wcbReserved2 : WORD -> "int"
; i_pvReserved2 : void* optional -> "sptr"
; o_ppvObject : void** in/out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; HRESULT DtcGetTransactionManagerC(LPSTR i_pszHost, LPSTR i_pszTmName, GUID* i_riid, DWORD i_dwReserved1, WORD i_wcbReserved2, void* i_pvReserved2, void** o_ppvObject)
#uselib "XOLEHLP.dll"
#cfunc global DtcGetTransactionManagerC "DtcGetTransactionManagerC" str, str, var, int, int, intptr, intptr
; res = DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
; i_pszHost : LPSTR optional -> "str"
; i_pszTmName : LPSTR optional -> "str"
; i_riid : GUID* -> "var"
; i_dwReserved1 : DWORD -> "int"
; i_wcbReserved2 : WORD -> "int"
; i_pvReserved2 : void* optional -> "intptr"
; o_ppvObject : void** in/out -> "intptr"
; ※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。; HRESULT DtcGetTransactionManagerC(LPSTR i_pszHost, LPSTR i_pszTmName, GUID* i_riid, DWORD i_dwReserved1, WORD i_wcbReserved2, void* i_pvReserved2, void** o_ppvObject)
#uselib "XOLEHLP.dll"
#cfunc global DtcGetTransactionManagerC "DtcGetTransactionManagerC" str, str, intptr, int, int, intptr, intptr
; res = DtcGetTransactionManagerC(i_pszHost, i_pszTmName, varptr(i_riid), i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
; i_pszHost : LPSTR optional -> "str"
; i_pszTmName : LPSTR optional -> "str"
; i_riid : GUID* -> "intptr"
; i_dwReserved1 : DWORD -> "int"
; i_wcbReserved2 : WORD -> "int"
; i_pvReserved2 : void* optional -> "intptr"
; o_ppvObject : void** in/out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	xolehlp = windows.NewLazySystemDLL("XOLEHLP.dll")
	procDtcGetTransactionManagerC = xolehlp.NewProc("DtcGetTransactionManagerC")
)

// i_pszHost (LPSTR optional), i_pszTmName (LPSTR optional), i_riid (GUID*), i_dwReserved1 (DWORD), i_wcbReserved2 (WORD), i_pvReserved2 (void* optional), o_ppvObject (void** in/out)
r1, _, err := procDtcGetTransactionManagerC.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(i_pszHost))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(i_pszTmName))),
	uintptr(i_riid),
	uintptr(i_dwReserved1),
	uintptr(i_wcbReserved2),
	uintptr(i_pvReserved2),
	uintptr(o_ppvObject),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DtcGetTransactionManagerC(
  i_pszHost: PAnsiChar;   // LPSTR optional
  i_pszTmName: PAnsiChar;   // LPSTR optional
  i_riid: PGUID;   // GUID*
  i_dwReserved1: DWORD;   // DWORD
  i_wcbReserved2: Word;   // WORD
  i_pvReserved2: Pointer;   // void* optional
  o_ppvObject: Pointer   // void** in/out
): Integer; cdecl;
  external 'XOLEHLP.dll' name 'DtcGetTransactionManagerC';

result := DllCall("XOLEHLP\DtcGetTransactionManagerC"
    , "AStr", i_pszHost   ; LPSTR optional
    , "AStr", i_pszTmName   ; LPSTR optional
    , "Ptr", i_riid   ; GUID*
    , "UInt", i_dwReserved1   ; DWORD
    , "UShort", i_wcbReserved2   ; WORD
    , "Ptr", i_pvReserved2   ; void* optional
    , "Ptr", o_ppvObject   ; void** in/out
    , "Cdecl Int")   ; return: HRESULT

●DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject) = DLL("XOLEHLP.dll", "int DtcGetTransactionManagerC(char*, char*, void*, dword, int, void*, void*)")
# 呼び出し: DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
# i_pszHost : LPSTR optional -> "char*"
# i_pszTmName : LPSTR optional -> "char*"
# i_riid : GUID* -> "void*"
# i_dwReserved1 : DWORD -> "dword"
# i_wcbReserved2 : WORD -> "int"
# i_pvReserved2 : void* optional -> "void*"
# o_ppvObject : void** 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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。

const std = @import("std");

extern "xolehlp" fn DtcGetTransactionManagerC(
    i_pszHost: [*c]const u8, // LPSTR optional
    i_pszTmName: [*c]const u8, // LPSTR optional
    i_riid: [*c]GUID, // GUID*
    i_dwReserved1: u32, // DWORD
    i_wcbReserved2: u16, // WORD
    i_pvReserved2: ?*anyopaque, // void* optional
    o_ppvObject: ?*anyopaque // void** in/out
) callconv(.c) i32;

proc DtcGetTransactionManagerC(
    i_pszHost: cstring,  # LPSTR optional
    i_pszTmName: cstring,  # LPSTR optional
    i_riid: ptr GUID,  # GUID*
    i_dwReserved1: uint32,  # DWORD
    i_wcbReserved2: uint16,  # WORD
    i_pvReserved2: pointer,  # void* optional
    o_ppvObject: pointer  # void** in/out
): int32 {.importc: "DtcGetTransactionManagerC", cdecl, dynlib: "XOLEHLP.dll".}

pragma(lib, "xolehlp");
extern(C)
int DtcGetTransactionManagerC(
    const(char)* i_pszHost,   // LPSTR optional
    const(char)* i_pszTmName,   // LPSTR optional
    GUID* i_riid,   // GUID*
    uint i_dwReserved1,   // DWORD
    ushort i_wcbReserved2,   // WORD
    void* i_pvReserved2,   // void* optional
    void** o_ppvObject   // void** in/out
);

ccall((:DtcGetTransactionManagerC, "XOLEHLP.dll"), Int32,
      (Cstring, Cstring, Ptr{GUID}, UInt32, UInt16, Ptr{Cvoid}, Ptr{Cvoid}),
      i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
# i_pszHost : LPSTR optional -> Cstring
# i_pszTmName : LPSTR optional -> Cstring
# i_riid : GUID* -> Ptr{GUID}
# i_dwReserved1 : DWORD -> UInt32
# i_wcbReserved2 : WORD -> UInt16
# i_pvReserved2 : void* optional -> Ptr{Cvoid}
# o_ppvObject : void** in/out -> Ptr{Cvoid}

local ffi = require("ffi")
ffi.cdef[[
int32_t DtcGetTransactionManagerC(
    const char* i_pszHost,
    const char* i_pszTmName,
    void* i_riid,
    uint32_t i_dwReserved1,
    uint16_t i_wcbReserved2,
    void* i_pvReserved2,
    void** o_ppvObject);
]]
local xolehlp = ffi.load("xolehlp")
-- xolehlp.DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
-- i_pszHost : LPSTR optional
-- i_pszTmName : LPSTR optional
-- i_riid : GUID*
-- i_dwReserved1 : DWORD
-- i_wcbReserved2 : WORD
-- i_pvReserved2 : void* optional
-- o_ppvObject : void** in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('XOLEHLP.dll');
const DtcGetTransactionManagerC = lib.func('__cdecl', 'DtcGetTransactionManagerC', 'int32_t', ['str', 'str', 'void *', 'uint32_t', 'uint16_t', 'void *', 'void *']);
// DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
// i_pszHost : LPSTR optional -> 'str'
// i_pszTmName : LPSTR optional -> 'str'
// i_riid : GUID* -> 'void *'
// i_dwReserved1 : DWORD -> 'uint32_t'
// i_wcbReserved2 : WORD -> 'uint16_t'
// i_pvReserved2 : void* optional -> 'void *'
// o_ppvObject : void** in/out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("XOLEHLP.dll", {
  DtcGetTransactionManagerC: { parameters: ["buffer", "buffer", "pointer", "u32", "u16", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject)
// i_pszHost : LPSTR optional -> "buffer"
// i_pszTmName : LPSTR optional -> "buffer"
// i_riid : GUID* -> "pointer"
// i_dwReserved1 : DWORD -> "u32"
// i_wcbReserved2 : WORD -> "u16"
// i_pvReserved2 : void* optional -> "pointer"
// o_ppvObject : void** in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t DtcGetTransactionManagerC(
    const char* i_pszHost,
    const char* i_pszTmName,
    void* i_riid,
    uint32_t i_dwReserved1,
    uint16_t i_wcbReserved2,
    void* i_pvReserved2,
    void** o_ppvObject);
C, "XOLEHLP.dll");
// $ffi->DtcGetTransactionManagerC(i_pszHost, i_pszTmName, i_riid, i_dwReserved1, i_wcbReserved2, i_pvReserved2, o_ppvObject);
// i_pszHost : LPSTR optional
// i_pszTmName : LPSTR optional
// i_riid : GUID*
// i_dwReserved1 : DWORD
// i_wcbReserved2 : WORD
// i_pvReserved2 : void* optional
// o_ppvObject : void** in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Xolehlp extends Library {
    Xolehlp INSTANCE = Native.load("xolehlp", Xolehlp.class);
    int DtcGetTransactionManagerC(
        String i_pszHost,   // LPSTR optional
        String i_pszTmName,   // LPSTR optional
        Pointer i_riid,   // GUID*
        int i_dwReserved1,   // DWORD
        short i_wcbReserved2,   // WORD
        Pointer i_pvReserved2,   // void* optional
        Pointer o_ppvObject   // void** in/out
    );
}

@[Link("xolehlp")]
lib LibXOLEHLP
  fun DtcGetTransactionManagerC = DtcGetTransactionManagerC(
    i_pszHost : UInt8*,   # LPSTR optional
    i_pszTmName : UInt8*,   # LPSTR optional
    i_riid : GUID*,   # GUID*
    i_dwReserved1 : UInt32,   # DWORD
    i_wcbReserved2 : UInt16,   # WORD
    i_pvReserved2 : Void*,   # void* optional
    o_ppvObject : Void**   # void** in/out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef DtcGetTransactionManagerCNative = Int32 Function(Pointer<Utf8>, Pointer<Utf8>, Pointer<Void>, Uint32, Uint16, Pointer<Void>, Pointer<Void>);
typedef DtcGetTransactionManagerCDart = int Function(Pointer<Utf8>, Pointer<Utf8>, Pointer<Void>, int, int, Pointer<Void>, Pointer<Void>);
final DtcGetTransactionManagerC = DynamicLibrary.open('XOLEHLP.dll')
    .lookupFunction<DtcGetTransactionManagerCNative, DtcGetTransactionManagerCDart>('DtcGetTransactionManagerC');
// i_pszHost : LPSTR optional -> Pointer<Utf8>
// i_pszTmName : LPSTR optional -> Pointer<Utf8>
// i_riid : GUID* -> Pointer<Void>
// i_dwReserved1 : DWORD -> Uint32
// i_wcbReserved2 : WORD -> Uint16
// i_pvReserved2 : void* optional -> Pointer<Void>
// o_ppvObject : void** in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function DtcGetTransactionManagerC(
  i_pszHost: PAnsiChar;   // LPSTR optional
  i_pszTmName: PAnsiChar;   // LPSTR optional
  i_riid: PGUID;   // GUID*
  i_dwReserved1: DWORD;   // DWORD
  i_wcbReserved2: Word;   // WORD
  i_pvReserved2: Pointer;   // void* optional
  o_ppvObject: Pointer   // void** in/out
): Integer; cdecl;
  external 'XOLEHLP.dll' name 'DtcGetTransactionManagerC';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import ccall safe "DtcGetTransactionManagerC"
  c_DtcGetTransactionManagerC :: CString -> CString -> Ptr () -> Word32 -> Word16 -> Ptr () -> Ptr () -> IO Int32
-- i_pszHost : LPSTR optional -> CString
-- i_pszTmName : LPSTR optional -> CString
-- i_riid : GUID* -> Ptr ()
-- i_dwReserved1 : DWORD -> Word32
-- i_wcbReserved2 : WORD -> Word16
-- i_pvReserved2 : void* optional -> Ptr ()
-- o_ppvObject : void** in/out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let dtcgettransactionmanagerc =
  foreign "DtcGetTransactionManagerC"
    (string @-> string @-> (ptr void) @-> uint32_t @-> uint16_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* i_pszHost : LPSTR optional -> string *)
(* i_pszTmName : LPSTR optional -> string *)
(* i_riid : GUID* -> (ptr void) *)
(* i_dwReserved1 : DWORD -> uint32_t *)
(* i_wcbReserved2 : WORD -> uint16_t *)
(* i_pvReserved2 : void* optional -> (ptr void) *)
(* o_ppvObject : void** in/out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library xolehlp (t "XOLEHLP.dll"))
(cffi:use-foreign-library xolehlp)

(cffi:defcfun ("DtcGetTransactionManagerC" dtc-get-transaction-manager-c :convention :cdecl) :int32
  (i-psz-host :string)   ; LPSTR optional
  (i-psz-tm-name :string)   ; LPSTR optional
  (i-riid :pointer)   ; GUID*
  (i-dw-reserved1 :uint32)   ; DWORD
  (i-wcb-reserved2 :uint16)   ; WORD
  (i-pv-reserved2 :pointer)   ; void* optional
  (o-ppv-object :pointer))   ; void** in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $DtcGetTransactionManagerC = Win32::API::More->new('XOLEHLP',
    'int DtcGetTransactionManagerC(LPCSTR i_pszHost, LPCSTR i_pszTmName, LPVOID i_riid, DWORD i_dwReserved1, WORD i_wcbReserved2, LPVOID i_pvReserved2, LPVOID o_ppvObject)');
# my $ret = $DtcGetTransactionManagerC->Call($i_pszHost, $i_pszTmName, $i_riid, $i_dwReserved1, $i_wcbReserved2, $i_pvReserved2, $o_ppvObject);
# i_pszHost : LPSTR optional -> LPCSTR
# i_pszTmName : LPSTR optional -> LPCSTR
# i_riid : GUID* -> LPVOID
# i_dwReserved1 : DWORD -> DWORD
# i_wcbReserved2 : WORD -> WORD
# i_pvReserved2 : void* optional -> LPVOID
# o_ppvObject : void** in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。