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LocalFileTimeToLocalSystemTime

関数
ローカルファイル時刻をローカルシステム時刻に変換する。
DLLKERNEL32.dll呼出規約winapi

シグネチャ

// KERNEL32.dll
#include <windows.h>

BOOL LocalFileTimeToLocalSystemTime(
    const TIME_ZONE_INFORMATION* timeZoneInformation,   // optional
    const FILETIME* localFileTime,
    SYSTEMTIME* localSystemTime
);

パラメーター

名前型方向説明
timeZoneInformationTIME_ZONE_INFORMATION*inoptional変換に用いるタイムゾーン情報へのポインタ。NULLで現在の設定を使う。
localFileTimeFILETIME*in変換元のローカルFILETIME値へのポインタ。
localSystemTimeSYSTEMTIME*out変換後のローカルSYSTEMTIMEを受け取るポインタ。

戻り値の型: BOOL

各言語での呼び出し定義

// KERNEL32.dll
#include <windows.h>

BOOL LocalFileTimeToLocalSystemTime(
    const TIME_ZONE_INFORMATION* timeZoneInformation,   // optional
    const FILETIME* localFileTime,
    SYSTEMTIME* localSystemTime
);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", ExactSpelling = true)]
static extern bool LocalFileTimeToLocalSystemTime(
    IntPtr timeZoneInformation,   // TIME_ZONE_INFORMATION* optional
    IntPtr localFileTime,   // FILETIME*
    IntPtr localSystemTime   // SYSTEMTIME* out
);
<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function LocalFileTimeToLocalSystemTime(
    timeZoneInformation As IntPtr,   ' TIME_ZONE_INFORMATION* optional
    localFileTime As IntPtr,   ' FILETIME*
    localSystemTime As IntPtr   ' SYSTEMTIME* out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function
' timeZoneInformation : TIME_ZONE_INFORMATION* optional
' localFileTime : FILETIME*
' localSystemTime : SYSTEMTIME* out
Declare PtrSafe Function LocalFileTimeToLocalSystemTime Lib "kernel32" ( _
    ByVal timeZoneInformation As LongPtr, _
    ByVal localFileTime As LongPtr, _
    ByVal localSystemTime 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

LocalFileTimeToLocalSystemTime = ctypes.windll.kernel32.LocalFileTimeToLocalSystemTime
LocalFileTimeToLocalSystemTime.restype = wintypes.BOOL
LocalFileTimeToLocalSystemTime.argtypes = [
    ctypes.c_void_p,  # timeZoneInformation : TIME_ZONE_INFORMATION* optional
    ctypes.c_void_p,  # localFileTime : FILETIME*
    ctypes.c_void_p,  # localSystemTime : SYSTEMTIME* out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
LocalFileTimeToLocalSystemTime = Fiddle::Function.new(
  lib['LocalFileTimeToLocalSystemTime'],
  [
    Fiddle::TYPE_VOIDP,  # timeZoneInformation : TIME_ZONE_INFORMATION* optional
    Fiddle::TYPE_VOIDP,  # localFileTime : FILETIME*
    Fiddle::TYPE_VOIDP,  # localSystemTime : SYSTEMTIME* out
  ],
  Fiddle::TYPE_INT)
#[link(name = "kernel32")]
extern "system" {
    fn LocalFileTimeToLocalSystemTime(
        timeZoneInformation: *const TIME_ZONE_INFORMATION,  // TIME_ZONE_INFORMATION* optional
        localFileTime: *const FILETIME,  // FILETIME*
        localSystemTime: *mut SYSTEMTIME  // SYSTEMTIME* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll")]
public static extern bool LocalFileTimeToLocalSystemTime(IntPtr timeZoneInformation, IntPtr localFileTime, IntPtr localSystemTime);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_LocalFileTimeToLocalSystemTime' -Namespace Win32 -PassThru
# $api::LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime)
#uselib "KERNEL32.dll"
#func global LocalFileTimeToLocalSystemTime "LocalFileTimeToLocalSystemTime" sptr, sptr, sptr
; LocalFileTimeToLocalSystemTime varptr(timeZoneInformation), varptr(localFileTime), varptr(localSystemTime)   ; 戻り値は stat
; timeZoneInformation : TIME_ZONE_INFORMATION* optional -> "sptr"
; localFileTime : FILETIME* -> "sptr"
; localSystemTime : SYSTEMTIME* 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 "KERNEL32.dll"
#cfunc global LocalFileTimeToLocalSystemTime "LocalFileTimeToLocalSystemTime" var, var, var
; res = LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime)
; timeZoneInformation : TIME_ZONE_INFORMATION* optional -> "var"
; localFileTime : FILETIME* -> "var"
; localSystemTime : SYSTEMTIME* out -> "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。
出力引数: 
; BOOL LocalFileTimeToLocalSystemTime(TIME_ZONE_INFORMATION* timeZoneInformation, FILETIME* localFileTime, SYSTEMTIME* localSystemTime)
#uselib "KERNEL32.dll"
#cfunc global LocalFileTimeToLocalSystemTime "LocalFileTimeToLocalSystemTime" var, var, var
; res = LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime)
; timeZoneInformation : TIME_ZONE_INFORMATION* optional -> "var"
; localFileTime : FILETIME* -> "var"
; localSystemTime : SYSTEMTIME* out -> "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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procLocalFileTimeToLocalSystemTime = kernel32.NewProc("LocalFileTimeToLocalSystemTime")
)

// timeZoneInformation (TIME_ZONE_INFORMATION* optional), localFileTime (FILETIME*), localSystemTime (SYSTEMTIME* out)
r1, _, err := procLocalFileTimeToLocalSystemTime.Call(
	uintptr(timeZoneInformation),
	uintptr(localFileTime),
	uintptr(localSystemTime),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL
function LocalFileTimeToLocalSystemTime(
  timeZoneInformation: Pointer;   // TIME_ZONE_INFORMATION* optional
  localFileTime: Pointer;   // FILETIME*
  localSystemTime: Pointer   // SYSTEMTIME* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'LocalFileTimeToLocalSystemTime';
result := DllCall("KERNEL32\LocalFileTimeToLocalSystemTime"
    , "Ptr", timeZoneInformation   ; TIME_ZONE_INFORMATION* optional
    , "Ptr", localFileTime   ; FILETIME*
    , "Ptr", localSystemTime   ; SYSTEMTIME* out
    , "Int")   ; return: BOOL
●LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime) = DLL("KERNEL32.dll", "bool LocalFileTimeToLocalSystemTime(void*, void*, void*)")
# 呼び出し: LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime)
# timeZoneInformation : TIME_ZONE_INFORMATION* optional -> "void*"
# localFileTime : FILETIME* -> "void*"
# localSystemTime : SYSTEMTIME* 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 "kernel32" fn LocalFileTimeToLocalSystemTime(
    timeZoneInformation: [*c]TIME_ZONE_INFORMATION, // TIME_ZONE_INFORMATION* optional
    localFileTime: [*c]FILETIME, // FILETIME*
    localSystemTime: [*c]SYSTEMTIME // SYSTEMTIME* out
) callconv(std.os.windows.WINAPI) i32;
proc LocalFileTimeToLocalSystemTime(
    timeZoneInformation: ptr TIME_ZONE_INFORMATION,  # TIME_ZONE_INFORMATION* optional
    localFileTime: ptr FILETIME,  # FILETIME*
    localSystemTime: ptr SYSTEMTIME  # SYSTEMTIME* out
): int32 {.importc: "LocalFileTimeToLocalSystemTime", stdcall, dynlib: "KERNEL32.dll".}
pragma(lib, "kernel32");
extern(Windows)
int LocalFileTimeToLocalSystemTime(
    TIME_ZONE_INFORMATION* timeZoneInformation,   // TIME_ZONE_INFORMATION* optional
    FILETIME* localFileTime,   // FILETIME*
    SYSTEMTIME* localSystemTime   // SYSTEMTIME* out
);
ccall((:LocalFileTimeToLocalSystemTime, "KERNEL32.dll"), stdcall, Int32,
      (Ptr{TIME_ZONE_INFORMATION}, Ptr{FILETIME}, Ptr{SYSTEMTIME}),
      timeZoneInformation, localFileTime, localSystemTime)
# timeZoneInformation : TIME_ZONE_INFORMATION* optional -> Ptr{TIME_ZONE_INFORMATION}
# localFileTime : FILETIME* -> Ptr{FILETIME}
# localSystemTime : SYSTEMTIME* out -> Ptr{SYSTEMTIME}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t LocalFileTimeToLocalSystemTime(
    void* timeZoneInformation,
    void* localFileTime,
    void* localSystemTime);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime)
-- timeZoneInformation : TIME_ZONE_INFORMATION* optional
-- localFileTime : FILETIME*
-- localSystemTime : SYSTEMTIME* 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('KERNEL32.dll');
const LocalFileTimeToLocalSystemTime = lib.func('__stdcall', 'LocalFileTimeToLocalSystemTime', 'int32_t', ['void *', 'void *', 'void *']);
// LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime)
// timeZoneInformation : TIME_ZONE_INFORMATION* optional -> 'void *'
// localFileTime : FILETIME* -> 'void *'
// localSystemTime : SYSTEMTIME* 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("KERNEL32.dll", {
  LocalFileTimeToLocalSystemTime: { parameters: ["pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime)
// timeZoneInformation : TIME_ZONE_INFORMATION* optional -> "pointer"
// localFileTime : FILETIME* -> "pointer"
// localSystemTime : SYSTEMTIME* 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 LocalFileTimeToLocalSystemTime(
    void* timeZoneInformation,
    void* localFileTime,
    void* localSystemTime);
C, "KERNEL32.dll");
// $ffi->LocalFileTimeToLocalSystemTime(timeZoneInformation, localFileTime, localSystemTime);
// timeZoneInformation : TIME_ZONE_INFORMATION* optional
// localFileTime : FILETIME*
// localSystemTime : SYSTEMTIME* 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 Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class);
    boolean LocalFileTimeToLocalSystemTime(
        Pointer timeZoneInformation,   // TIME_ZONE_INFORMATION* optional
        Pointer localFileTime,   // FILETIME*
        Pointer localSystemTime   // SYSTEMTIME* out
    );
}
@[Link("kernel32")]
lib LibKERNEL32
  fun LocalFileTimeToLocalSystemTime = LocalFileTimeToLocalSystemTime(
    timeZoneInformation : TIME_ZONE_INFORMATION*,   # TIME_ZONE_INFORMATION* optional
    localFileTime : FILETIME*,   # FILETIME*
    localSystemTime : SYSTEMTIME*   # SYSTEMTIME* 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 LocalFileTimeToLocalSystemTimeNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>);
typedef LocalFileTimeToLocalSystemTimeDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>);
final LocalFileTimeToLocalSystemTime = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<LocalFileTimeToLocalSystemTimeNative, LocalFileTimeToLocalSystemTimeDart>('LocalFileTimeToLocalSystemTime');
// timeZoneInformation : TIME_ZONE_INFORMATION* optional -> Pointer<Void>
// localFileTime : FILETIME* -> Pointer<Void>
// localSystemTime : SYSTEMTIME* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function LocalFileTimeToLocalSystemTime(
  timeZoneInformation: Pointer;   // TIME_ZONE_INFORMATION* optional
  localFileTime: Pointer;   // FILETIME*
  localSystemTime: Pointer   // SYSTEMTIME* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'LocalFileTimeToLocalSystemTime';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "LocalFileTimeToLocalSystemTime"
  c_LocalFileTimeToLocalSystemTime :: Ptr () -> Ptr () -> Ptr () -> IO CInt
-- timeZoneInformation : TIME_ZONE_INFORMATION* optional -> Ptr ()
-- localFileTime : FILETIME* -> Ptr ()
-- localSystemTime : SYSTEMTIME* 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 localfiletimetolocalsystemtime =
  foreign "LocalFileTimeToLocalSystemTime"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* timeZoneInformation : TIME_ZONE_INFORMATION* optional -> (ptr void) *)
(* localFileTime : FILETIME* -> (ptr void) *)
(* localSystemTime : SYSTEMTIME* 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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("LocalFileTimeToLocalSystemTime" local-file-time-to-local-system-time :convention :stdcall) :int32
  (time-zone-information :pointer)   ; TIME_ZONE_INFORMATION* optional
  (local-file-time :pointer)   ; FILETIME*
  (local-system-time :pointer))   ; SYSTEMTIME* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $LocalFileTimeToLocalSystemTime = Win32::API::More->new('KERNEL32',
    'BOOL LocalFileTimeToLocalSystemTime(LPVOID timeZoneInformation, LPVOID localFileTime, LPVOID localSystemTime)');
# my $ret = $LocalFileTimeToLocalSystemTime->Call($timeZoneInformation, $localFileTime, $localSystemTime);
# timeZoneInformation : TIME_ZONE_INFORMATION* optional -> LPVOID
# localFileTime : FILETIME* -> LPVOID
# localSystemTime : SYSTEMTIME* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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