TruncateLog

// clfsw32.dll
#include <windows.h>

BOOL TruncateLog(
    void* pvMarshal,
    CLS_LSN* plsnEnd,
    OVERLAPPED* lpOverlapped   // optional
);

<DllImport("clfsw32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function TruncateLog(
    pvMarshal As IntPtr,   ' void*
    plsnEnd As IntPtr,   ' CLS_LSN*
    lpOverlapped As IntPtr   ' OVERLAPPED* optional, in/out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' pvMarshal : void*
' plsnEnd : CLS_LSN*
' lpOverlapped : OVERLAPPED* optional, in/out
Declare PtrSafe Function TruncateLog Lib "clfsw32" ( _
    ByVal pvMarshal As LongPtr, _
    ByVal plsnEnd As LongPtr, _
    ByVal lpOverlapped 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

TruncateLog = ctypes.windll.clfsw32.TruncateLog
TruncateLog.restype = wintypes.BOOL
TruncateLog.argtypes = [
    ctypes.POINTER(None),  # pvMarshal : void*
    ctypes.c_void_p,  # plsnEnd : CLS_LSN*
    ctypes.c_void_p,  # lpOverlapped : OVERLAPPED* optional, in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('clfsw32.dll')
TruncateLog = Fiddle::Function.new(
  lib['TruncateLog'],
  [
    Fiddle::TYPE_VOIDP,  # pvMarshal : void*
    Fiddle::TYPE_VOIDP,  # plsnEnd : CLS_LSN*
    Fiddle::TYPE_VOIDP,  # lpOverlapped : OVERLAPPED* optional, in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "clfsw32")]
extern "system" {
    fn TruncateLog(
        pvMarshal: *mut (),  // void*
        plsnEnd: *mut CLS_LSN,  // CLS_LSN*
        lpOverlapped: *mut OVERLAPPED  // OVERLAPPED* optional, in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("clfsw32.dll", SetLastError = true)]
public static extern bool TruncateLog(IntPtr pvMarshal, IntPtr plsnEnd, IntPtr lpOverlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'clfsw32_TruncateLog' -Namespace Win32 -PassThru
# $api::TruncateLog(pvMarshal, plsnEnd, lpOverlapped)

#uselib "clfsw32.dll"
#func global TruncateLog "TruncateLog" sptr, sptr, sptr
; TruncateLog pvMarshal, varptr(plsnEnd), varptr(lpOverlapped)   ; 戻り値は stat
; pvMarshal : void* -> "sptr"
; plsnEnd : CLS_LSN* -> "sptr"
; lpOverlapped : OVERLAPPED* optional, 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。

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

var (
	clfsw32 = windows.NewLazySystemDLL("clfsw32.dll")
	procTruncateLog = clfsw32.NewProc("TruncateLog")
)

// pvMarshal (void*), plsnEnd (CLS_LSN*), lpOverlapped (OVERLAPPED* optional, in/out)
r1, _, err := procTruncateLog.Call(
	uintptr(pvMarshal),
	uintptr(plsnEnd),
	uintptr(lpOverlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function TruncateLog(
  pvMarshal: Pointer;   // void*
  plsnEnd: Pointer;   // CLS_LSN*
  lpOverlapped: Pointer   // OVERLAPPED* optional, in/out
): BOOL; stdcall;
  external 'clfsw32.dll' name 'TruncateLog';

result := DllCall("clfsw32\TruncateLog"
    , "Ptr", pvMarshal   ; void*
    , "Ptr", plsnEnd   ; CLS_LSN*
    , "Ptr", lpOverlapped   ; OVERLAPPED* optional, in/out
    , "Int")   ; return: BOOL

●TruncateLog(pvMarshal, plsnEnd, lpOverlapped) = DLL("clfsw32.dll", "bool TruncateLog(void*, void*, void*)")
# 呼び出し: TruncateLog(pvMarshal, plsnEnd, lpOverlapped)
# pvMarshal : void* -> "void*"
# plsnEnd : CLS_LSN* -> "void*"
# lpOverlapped : OVERLAPPED* optional, 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)。

const std = @import("std");

extern "clfsw32" fn TruncateLog(
    pvMarshal: ?*anyopaque, // void*
    plsnEnd: [*c]CLS_LSN, // CLS_LSN*
    lpOverlapped: [*c]OVERLAPPED // OVERLAPPED* optional, in/out
) callconv(std.os.windows.WINAPI) i32;

proc TruncateLog(
    pvMarshal: pointer,  # void*
    plsnEnd: ptr CLS_LSN,  # CLS_LSN*
    lpOverlapped: ptr OVERLAPPED  # OVERLAPPED* optional, in/out
): int32 {.importc: "TruncateLog", stdcall, dynlib: "clfsw32.dll".}

pragma(lib, "clfsw32");
extern(Windows)
int TruncateLog(
    void* pvMarshal,   // void*
    CLS_LSN* plsnEnd,   // CLS_LSN*
    OVERLAPPED* lpOverlapped   // OVERLAPPED* optional, in/out
);

ccall((:TruncateLog, "clfsw32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{CLS_LSN}, Ptr{OVERLAPPED}),
      pvMarshal, plsnEnd, lpOverlapped)
# pvMarshal : void* -> Ptr{Cvoid}
# plsnEnd : CLS_LSN* -> Ptr{CLS_LSN}
# lpOverlapped : OVERLAPPED* optional, in/out -> Ptr{OVERLAPPED}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t TruncateLog(
    void* pvMarshal,
    void* plsnEnd,
    void* lpOverlapped);
]]
local clfsw32 = ffi.load("clfsw32")
-- clfsw32.TruncateLog(pvMarshal, plsnEnd, lpOverlapped)
-- pvMarshal : void*
-- plsnEnd : CLS_LSN*
-- lpOverlapped : OVERLAPPED* optional, 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('clfsw32.dll');
const TruncateLog = lib.func('__stdcall', 'TruncateLog', 'int32_t', ['void *', 'void *', 'void *']);
// TruncateLog(pvMarshal, plsnEnd, lpOverlapped)
// pvMarshal : void* -> 'void *'
// plsnEnd : CLS_LSN* -> 'void *'
// lpOverlapped : OVERLAPPED* optional, 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("clfsw32.dll", {
  TruncateLog: { parameters: ["pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.TruncateLog(pvMarshal, plsnEnd, lpOverlapped)
// pvMarshal : void* -> "pointer"
// plsnEnd : CLS_LSN* -> "pointer"
// lpOverlapped : OVERLAPPED* optional, 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 TruncateLog(
    void* pvMarshal,
    void* plsnEnd,
    void* lpOverlapped);
C, "clfsw32.dll");
// $ffi->TruncateLog(pvMarshal, plsnEnd, lpOverlapped);
// pvMarshal : void*
// plsnEnd : CLS_LSN*
// lpOverlapped : OVERLAPPED* optional, 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。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

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

public interface Clfsw32 extends StdCallLibrary {
    Clfsw32 INSTANCE = Native.load("clfsw32", Clfsw32.class);
    boolean TruncateLog(
        Pointer pvMarshal,   // void*
        Pointer plsnEnd,   // CLS_LSN*
        Pointer lpOverlapped   // OVERLAPPED* optional, in/out
    );
}

@[Link("clfsw32")]
lib Libclfsw32
  fun TruncateLog = TruncateLog(
    pvMarshal : Void*,   # void*
    plsnEnd : CLS_LSN*,   # CLS_LSN*
    lpOverlapped : OVERLAPPED*   # OVERLAPPED* optional, in/out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

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

typedef TruncateLogNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>);
typedef TruncateLogDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>);
final TruncateLog = DynamicLibrary.open('clfsw32.dll')
    .lookupFunction<TruncateLogNative, TruncateLogDart>('TruncateLog');
// pvMarshal : void* -> Pointer<Void>
// plsnEnd : CLS_LSN* -> Pointer<Void>
// lpOverlapped : OVERLAPPED* optional, in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function TruncateLog(
  pvMarshal: Pointer;   // void*
  plsnEnd: Pointer;   // CLS_LSN*
  lpOverlapped: Pointer   // OVERLAPPED* optional, in/out
): BOOL; stdcall;
  external 'clfsw32.dll' name 'TruncateLog';

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

foreign import stdcall safe "TruncateLog"
  c_TruncateLog :: Ptr () -> Ptr () -> Ptr () -> IO CInt
-- pvMarshal : void* -> Ptr ()
-- plsnEnd : CLS_LSN* -> Ptr ()
-- lpOverlapped : OVERLAPPED* optional, 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 truncatelog =
  foreign "TruncateLog"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* pvMarshal : void* -> (ptr void) *)
(* plsnEnd : CLS_LSN* -> (ptr void) *)
(* lpOverlapped : OVERLAPPED* optional, 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 clfsw32 (t "clfsw32.dll"))
(cffi:use-foreign-library clfsw32)

(cffi:defcfun ("TruncateLog" truncate-log :convention :stdcall) :int32
  (pv-marshal :pointer)   ; void*
  (plsn-end :pointer)   ; CLS_LSN*
  (lp-overlapped :pointer))   ; OVERLAPPED* optional, in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $TruncateLog = Win32::API::More->new('clfsw32',
    'BOOL TruncateLog(LPVOID pvMarshal, LPVOID plsnEnd, LPVOID lpOverlapped)');
# my $ret = $TruncateLog->Call($pvMarshal, $plsnEnd, $lpOverlapped);
# pvMarshal : void* -> LPVOID
# plsnEnd : CLS_LSN* -> LPVOID
# lpOverlapped : OVERLAPPED* optional, 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。