SetTransactionInformation

// ktmw32.dll
#include <windows.h>

BOOL SetTransactionInformation(
    HANDLE TransactionHandle,
    DWORD IsolationLevel,
    DWORD IsolationFlags,
    DWORD Timeout,
    LPWSTR Description   // optional
);

<DllImport("ktmw32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetTransactionInformation(
    TransactionHandle As IntPtr,   ' HANDLE
    IsolationLevel As UInteger,   ' DWORD
    IsolationFlags As UInteger,   ' DWORD
    Timeout As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> Description As String   ' LPWSTR optional
) As Boolean
End Function

' TransactionHandle : HANDLE
' IsolationLevel : DWORD
' IsolationFlags : DWORD
' Timeout : DWORD
' Description : LPWSTR optional
Declare PtrSafe Function SetTransactionInformation Lib "ktmw32" ( _
    ByVal TransactionHandle As LongPtr, _
    ByVal IsolationLevel As Long, _
    ByVal IsolationFlags As Long, _
    ByVal Timeout As Long, _
    ByVal Description 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

SetTransactionInformation = ctypes.windll.ktmw32.SetTransactionInformation
SetTransactionInformation.restype = wintypes.BOOL
SetTransactionInformation.argtypes = [
    wintypes.HANDLE,  # TransactionHandle : HANDLE
    wintypes.DWORD,  # IsolationLevel : DWORD
    wintypes.DWORD,  # IsolationFlags : DWORD
    wintypes.DWORD,  # Timeout : DWORD
    wintypes.LPCWSTR,  # Description : LPWSTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ktmw32.dll')
SetTransactionInformation = Fiddle::Function.new(
  lib['SetTransactionInformation'],
  [
    Fiddle::TYPE_VOIDP,  # TransactionHandle : HANDLE
    -Fiddle::TYPE_INT,  # IsolationLevel : DWORD
    -Fiddle::TYPE_INT,  # IsolationFlags : DWORD
    -Fiddle::TYPE_INT,  # Timeout : DWORD
    Fiddle::TYPE_VOIDP,  # Description : LPWSTR optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "ktmw32")]
extern "system" {
    fn SetTransactionInformation(
        TransactionHandle: *mut core::ffi::c_void,  // HANDLE
        IsolationLevel: u32,  // DWORD
        IsolationFlags: u32,  // DWORD
        Timeout: u32,  // DWORD
        Description: *mut u16  // LPWSTR optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ktmw32.dll", SetLastError = true)]
public static extern bool SetTransactionInformation(IntPtr TransactionHandle, uint IsolationLevel, uint IsolationFlags, uint Timeout, [MarshalAs(UnmanagedType.LPWStr)] string Description);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ktmw32_SetTransactionInformation' -Namespace Win32 -PassThru
# $api::SetTransactionInformation(TransactionHandle, IsolationLevel, IsolationFlags, Timeout, Description)

#uselib "ktmw32.dll"
#func global SetTransactionInformation "SetTransactionInformation" sptr, sptr, sptr, sptr, sptr
; SetTransactionInformation TransactionHandle, IsolationLevel, IsolationFlags, Timeout, Description   ; 戻り値は stat
; TransactionHandle : HANDLE -> "sptr"
; IsolationLevel : DWORD -> "sptr"
; IsolationFlags : DWORD -> "sptr"
; Timeout : DWORD -> "sptr"
; Description : LPWSTR optional -> "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 "ktmw32.dll"
#cfunc global SetTransactionInformation "SetTransactionInformation" sptr, int, int, int, wstr
; res = SetTransactionInformation(TransactionHandle, IsolationLevel, IsolationFlags, Timeout, Description)
; TransactionHandle : HANDLE -> "sptr"
; IsolationLevel : DWORD -> "int"
; IsolationFlags : DWORD -> "int"
; Timeout : DWORD -> "int"
; Description : LPWSTR optional -> "wstr"

; BOOL SetTransactionInformation(HANDLE TransactionHandle, DWORD IsolationLevel, DWORD IsolationFlags, DWORD Timeout, LPWSTR Description)
#uselib "ktmw32.dll"
#cfunc global SetTransactionInformation "SetTransactionInformation" intptr, int, int, int, wstr
; res = SetTransactionInformation(TransactionHandle, IsolationLevel, IsolationFlags, Timeout, Description)
; TransactionHandle : HANDLE -> "intptr"
; IsolationLevel : DWORD -> "int"
; IsolationFlags : DWORD -> "int"
; Timeout : DWORD -> "int"
; Description : LPWSTR optional -> "wstr"

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

var (
	ktmw32 = windows.NewLazySystemDLL("ktmw32.dll")
	procSetTransactionInformation = ktmw32.NewProc("SetTransactionInformation")
)

// TransactionHandle (HANDLE), IsolationLevel (DWORD), IsolationFlags (DWORD), Timeout (DWORD), Description (LPWSTR optional)
r1, _, err := procSetTransactionInformation.Call(
	uintptr(TransactionHandle),
	uintptr(IsolationLevel),
	uintptr(IsolationFlags),
	uintptr(Timeout),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Description))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetTransactionInformation(
  TransactionHandle: THandle;   // HANDLE
  IsolationLevel: DWORD;   // DWORD
  IsolationFlags: DWORD;   // DWORD
  Timeout: DWORD;   // DWORD
  Description: PWideChar   // LPWSTR optional
): BOOL; stdcall;
  external 'ktmw32.dll' name 'SetTransactionInformation';

result := DllCall("ktmw32\SetTransactionInformation"
    , "Ptr", TransactionHandle   ; HANDLE
    , "UInt", IsolationLevel   ; DWORD
    , "UInt", IsolationFlags   ; DWORD
    , "UInt", Timeout   ; DWORD
    , "WStr", Description   ; LPWSTR optional
    , "Int")   ; return: BOOL

●SetTransactionInformation(TransactionHandle, IsolationLevel, IsolationFlags, Timeout, Description) = DLL("ktmw32.dll", "bool SetTransactionInformation(void*, dword, dword, dword, char*)")
# 呼び出し: SetTransactionInformation(TransactionHandle, IsolationLevel, IsolationFlags, Timeout, Description)
# TransactionHandle : HANDLE -> "void*"
# IsolationLevel : DWORD -> "dword"
# IsolationFlags : DWORD -> "dword"
# Timeout : DWORD -> "dword"
# Description : LPWSTR optional -> "char*"
# 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)。