FileTimeToDosDateTime

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

BOOL FileTimeToDosDateTime(
    const FILETIME* lpFileTime,
    WORD* lpFatDate,
    WORD* lpFatTime
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function FileTimeToDosDateTime(
    lpFileTime As IntPtr,   ' FILETIME*
    <Out> ByRef lpFatDate As UShort,   ' WORD* out
    <Out> ByRef lpFatTime As UShort   ' WORD* out
) As Boolean
End Function

' lpFileTime : FILETIME*
' lpFatDate : WORD* out
' lpFatTime : WORD* out
Declare PtrSafe Function FileTimeToDosDateTime Lib "kernel32" ( _
    ByVal lpFileTime As LongPtr, _
    ByRef lpFatDate As Integer, _
    ByRef lpFatTime As Integer) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

FileTimeToDosDateTime = ctypes.windll.kernel32.FileTimeToDosDateTime
FileTimeToDosDateTime.restype = wintypes.BOOL
FileTimeToDosDateTime.argtypes = [
    ctypes.c_void_p,  # lpFileTime : FILETIME*
    ctypes.POINTER(ctypes.c_ushort),  # lpFatDate : WORD* out
    ctypes.POINTER(ctypes.c_ushort),  # lpFatTime : WORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
FileTimeToDosDateTime = Fiddle::Function.new(
  lib['FileTimeToDosDateTime'],
  [
    Fiddle::TYPE_VOIDP,  # lpFileTime : FILETIME*
    Fiddle::TYPE_VOIDP,  # lpFatDate : WORD* out
    Fiddle::TYPE_VOIDP,  # lpFatTime : WORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn FileTimeToDosDateTime(
        lpFileTime: *const FILETIME,  // FILETIME*
        lpFatDate: *mut u16,  // WORD* out
        lpFatTime: *mut u16  // WORD* 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 FileTimeToDosDateTime(IntPtr lpFileTime, out ushort lpFatDate, out ushort lpFatTime);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_FileTimeToDosDateTime' -Namespace Win32 -PassThru
# $api::FileTimeToDosDateTime(lpFileTime, lpFatDate, lpFatTime)

#uselib "KERNEL32.dll"
#func global FileTimeToDosDateTime "FileTimeToDosDateTime" sptr, sptr, sptr
; FileTimeToDosDateTime varptr(lpFileTime), varptr(lpFatDate), varptr(lpFatTime)   ; 戻り値は stat
; lpFileTime : FILETIME* -> "sptr"
; lpFatDate : WORD* out -> "sptr"
; lpFatTime : WORD* 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 "KERNEL32.dll"
#cfunc global FileTimeToDosDateTime "FileTimeToDosDateTime" var, var, var
; res = FileTimeToDosDateTime(lpFileTime, lpFatDate, lpFatTime)
; lpFileTime : FILETIME* -> "var"
; lpFatDate : WORD* out -> "var"
; lpFatTime : WORD* 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 FileTimeToDosDateTime(FILETIME* lpFileTime, WORD* lpFatDate, WORD* lpFatTime)
#uselib "KERNEL32.dll"
#cfunc global FileTimeToDosDateTime "FileTimeToDosDateTime" var, var, var
; res = FileTimeToDosDateTime(lpFileTime, lpFatDate, lpFatTime)
; lpFileTime : FILETIME* -> "var"
; lpFatDate : WORD* out -> "var"
; lpFatTime : WORD* 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")
	procFileTimeToDosDateTime = kernel32.NewProc("FileTimeToDosDateTime")
)

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

function FileTimeToDosDateTime(
  lpFileTime: Pointer;   // FILETIME*
  lpFatDate: Pointer;   // WORD* out
  lpFatTime: Pointer   // WORD* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'FileTimeToDosDateTime';

result := DllCall("KERNEL32\FileTimeToDosDateTime"
    , "Ptr", lpFileTime   ; FILETIME*
    , "Ptr", lpFatDate   ; WORD* out
    , "Ptr", lpFatTime   ; WORD* out
    , "Int")   ; return: BOOL

●FileTimeToDosDateTime(lpFileTime, lpFatDate, lpFatTime) = DLL("KERNEL32.dll", "bool FileTimeToDosDateTime(void*, void*, void*)")
# 呼び出し: FileTimeToDosDateTime(lpFileTime, lpFatDate, lpFatTime)
# lpFileTime : FILETIME* -> "void*"
# lpFatDate : WORD* out -> "void*"
# lpFatTime : WORD* 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)。