MQBeginTransaction

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

HRESULT MQBeginTransaction(
    ITransaction** ppTransaction
);

<DllImport("mqrt.dll", ExactSpelling:=True)>
Public Shared Function MQBeginTransaction(
    ppTransaction As IntPtr   ' ITransaction** out
) As Integer
End Function

' ppTransaction : ITransaction** out
Declare PtrSafe Function MQBeginTransaction Lib "mqrt" ( _
    ByVal ppTransaction 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

MQBeginTransaction = ctypes.windll.mqrt.MQBeginTransaction
MQBeginTransaction.restype = ctypes.c_int
MQBeginTransaction.argtypes = [
    ctypes.c_void_p,  # ppTransaction : ITransaction** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('mqrt.dll')
MQBeginTransaction = Fiddle::Function.new(
  lib['MQBeginTransaction'],
  [
    Fiddle::TYPE_VOIDP,  # ppTransaction : ITransaction** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mqrt")]
extern "system" {
    fn MQBeginTransaction(
        ppTransaction: *mut *mut core::ffi::c_void  // ITransaction** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("mqrt.dll")]
public static extern int MQBeginTransaction(IntPtr ppTransaction);
"@
$api = Add-Type -MemberDefinition $sig -Name 'mqrt_MQBeginTransaction' -Namespace Win32 -PassThru
# $api::MQBeginTransaction(ppTransaction)

#uselib "mqrt.dll"
#func global MQBeginTransaction "MQBeginTransaction" sptr
; MQBeginTransaction ppTransaction   ; 戻り値は stat
; ppTransaction : ITransaction** 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 "mqrt.dll"
#cfunc global MQBeginTransaction "MQBeginTransaction" sptr
; res = MQBeginTransaction(ppTransaction)
; ppTransaction : ITransaction** out -> "sptr"

; HRESULT MQBeginTransaction(ITransaction** ppTransaction)
#uselib "mqrt.dll"
#cfunc global MQBeginTransaction "MQBeginTransaction" intptr
; res = MQBeginTransaction(ppTransaction)
; ppTransaction : ITransaction** out -> "intptr"

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

var (
	mqrt = windows.NewLazySystemDLL("mqrt.dll")
	procMQBeginTransaction = mqrt.NewProc("MQBeginTransaction")
)

// ppTransaction (ITransaction** out)
r1, _, err := procMQBeginTransaction.Call(
	uintptr(ppTransaction),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MQBeginTransaction(
  ppTransaction: Pointer   // ITransaction** out
): Integer; stdcall;
  external 'mqrt.dll' name 'MQBeginTransaction';

result := DllCall("mqrt\MQBeginTransaction"
    , "Ptr", ppTransaction   ; ITransaction** out
    , "Int")   ; return: HRESULT

●MQBeginTransaction(ppTransaction) = DLL("mqrt.dll", "int MQBeginTransaction(void*)")
# 呼び出し: MQBeginTransaction(ppTransaction)
# ppTransaction : ITransaction** 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)。