ホーム › Storage.FileSystem › FileTimeToLocalFileTime

FileTimeToLocalFileTime

関数

ファイル時刻をローカル時刻に変換する。

DLLKERNEL32.dll呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

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

BOOL FileTimeToLocalFileTime(
    const FILETIME* lpFileTime,
    FILETIME* lpLocalFileTime
);

パラメーター

名前	型	方向
lpFileTime	FILETIME*	in
lpLocalFileTime	FILETIME*	out

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL FileTimeToLocalFileTime(
    const FILETIME* lpFileTime,
    FILETIME* lpLocalFileTime
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool FileTimeToLocalFileTime(
    IntPtr lpFileTime,   // FILETIME*
    IntPtr lpLocalFileTime   // FILETIME* out
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function FileTimeToLocalFileTime(
    lpFileTime As IntPtr,   ' FILETIME*
    lpLocalFileTime As IntPtr   ' FILETIME* out
) As Boolean
End Function

' lpFileTime : FILETIME*
' lpLocalFileTime : FILETIME* out
Declare PtrSafe Function FileTimeToLocalFileTime Lib "kernel32" ( _
    ByVal lpFileTime As LongPtr, _
    ByVal lpLocalFileTime 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

FileTimeToLocalFileTime = ctypes.windll.kernel32.FileTimeToLocalFileTime
FileTimeToLocalFileTime.restype = wintypes.BOOL
FileTimeToLocalFileTime.argtypes = [
    ctypes.c_void_p,  # lpFileTime : FILETIME*
    ctypes.c_void_p,  # lpLocalFileTime : FILETIME* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
FileTimeToLocalFileTime = Fiddle::Function.new(
  lib['FileTimeToLocalFileTime'],
  [
    Fiddle::TYPE_VOIDP,  # lpFileTime : FILETIME*
    Fiddle::TYPE_VOIDP,  # lpLocalFileTime : FILETIME* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn FileTimeToLocalFileTime(
        lpFileTime: *const FILETIME,  // FILETIME*
        lpLocalFileTime: *mut FILETIME  // FILETIME* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool FileTimeToLocalFileTime(IntPtr lpFileTime, IntPtr lpLocalFileTime);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_FileTimeToLocalFileTime' -Namespace Win32 -PassThru
# $api::FileTimeToLocalFileTime(lpFileTime, lpLocalFileTime)

#uselib "KERNEL32.dll"
#func global FileTimeToLocalFileTime "FileTimeToLocalFileTime" sptr, sptr
; FileTimeToLocalFileTime varptr(lpFileTime), varptr(lpLocalFileTime)   ; 戻り値は stat
; lpFileTime : FILETIME* -> "sptr"
; lpLocalFileTime : FILETIME* 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 FileTimeToLocalFileTime "FileTimeToLocalFileTime" var, var
; res = FileTimeToLocalFileTime(lpFileTime, lpLocalFileTime)
; lpFileTime : FILETIME* -> "var"
; lpLocalFileTime : FILETIME* 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。#uselib "KERNEL32.dll"
#cfunc global FileTimeToLocalFileTime "FileTimeToLocalFileTime" sptr, sptr
; res = FileTimeToLocalFileTime(varptr(lpFileTime), varptr(lpLocalFileTime))
; lpFileTime : FILETIME* -> "sptr"
; lpLocalFileTime : FILETIME* 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:

; BOOL FileTimeToLocalFileTime(FILETIME* lpFileTime, FILETIME* lpLocalFileTime)
#uselib "KERNEL32.dll"
#cfunc global FileTimeToLocalFileTime "FileTimeToLocalFileTime" var, var
; res = FileTimeToLocalFileTime(lpFileTime, lpLocalFileTime)
; lpFileTime : FILETIME* -> "var"
; lpLocalFileTime : FILETIME* 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。; BOOL FileTimeToLocalFileTime(FILETIME* lpFileTime, FILETIME* lpLocalFileTime)
#uselib "KERNEL32.dll"
#cfunc global FileTimeToLocalFileTime "FileTimeToLocalFileTime" intptr, intptr
; res = FileTimeToLocalFileTime(varptr(lpFileTime), varptr(lpLocalFileTime))
; lpFileTime : FILETIME* -> "intptr"
; lpLocalFileTime : FILETIME* 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procFileTimeToLocalFileTime = kernel32.NewProc("FileTimeToLocalFileTime")
)

// lpFileTime (FILETIME*), lpLocalFileTime (FILETIME* out)
r1, _, err := procFileTimeToLocalFileTime.Call(
	uintptr(lpFileTime),
	uintptr(lpLocalFileTime),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function FileTimeToLocalFileTime(
  lpFileTime: Pointer;   // FILETIME*
  lpLocalFileTime: Pointer   // FILETIME* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'FileTimeToLocalFileTime';

result := DllCall("KERNEL32\FileTimeToLocalFileTime"
    , "Ptr", lpFileTime   ; FILETIME*
    , "Ptr", lpLocalFileTime   ; FILETIME* out
    , "Int")   ; return: BOOL

●FileTimeToLocalFileTime(lpFileTime, lpLocalFileTime) = DLL("KERNEL32.dll", "bool FileTimeToLocalFileTime(void*, void*)")
# 呼び出し: FileTimeToLocalFileTime(lpFileTime, lpLocalFileTime)
# lpFileTime : FILETIME* -> "void*"
# lpLocalFileTime : FILETIME* 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)。