VariantToDosDateTime

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

HRESULT VariantToDosDateTime(
    const VARIANT* varIn,
    WORD* pwDate,
    WORD* pwTime
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function VariantToDosDateTime(
    varIn As IntPtr,   ' VARIANT*
    <Out> ByRef pwDate As UShort,   ' WORD* out
    <Out> ByRef pwTime As UShort   ' WORD* out
) As Integer
End Function

' varIn : VARIANT*
' pwDate : WORD* out
' pwTime : WORD* out
Declare PtrSafe Function VariantToDosDateTime Lib "propsys" ( _
    ByVal varIn As LongPtr, _
    ByRef pwDate As Integer, _
    ByRef pwTime 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

VariantToDosDateTime = ctypes.windll.propsys.VariantToDosDateTime
VariantToDosDateTime.restype = ctypes.c_int
VariantToDosDateTime.argtypes = [
    ctypes.c_void_p,  # varIn : VARIANT*
    ctypes.POINTER(ctypes.c_ushort),  # pwDate : WORD* out
    ctypes.POINTER(ctypes.c_ushort),  # pwTime : WORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
VariantToDosDateTime = Fiddle::Function.new(
  lib['VariantToDosDateTime'],
  [
    Fiddle::TYPE_VOIDP,  # varIn : VARIANT*
    Fiddle::TYPE_VOIDP,  # pwDate : WORD* out
    Fiddle::TYPE_VOIDP,  # pwTime : WORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn VariantToDosDateTime(
        varIn: *const VARIANT,  // VARIANT*
        pwDate: *mut u16,  // WORD* out
        pwTime: *mut u16  // WORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int VariantToDosDateTime(IntPtr varIn, out ushort pwDate, out ushort pwTime);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_VariantToDosDateTime' -Namespace Win32 -PassThru
# $api::VariantToDosDateTime(varIn, pwDate, pwTime)

#uselib "PROPSYS.dll"
#func global VariantToDosDateTime "VariantToDosDateTime" sptr, sptr, sptr
; VariantToDosDateTime varptr(varIn), varptr(pwDate), varptr(pwTime)   ; 戻り値は stat
; varIn : VARIANT* -> "sptr"
; pwDate : WORD* out -> "sptr"
; pwTime : 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 "PROPSYS.dll"
#cfunc global VariantToDosDateTime "VariantToDosDateTime" var, var, var
; res = VariantToDosDateTime(varIn, pwDate, pwTime)
; varIn : VARIANT* -> "var"
; pwDate : WORD* out -> "var"
; pwTime : 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。

; HRESULT VariantToDosDateTime(VARIANT* varIn, WORD* pwDate, WORD* pwTime)
#uselib "PROPSYS.dll"
#cfunc global VariantToDosDateTime "VariantToDosDateTime" var, var, var
; res = VariantToDosDateTime(varIn, pwDate, pwTime)
; varIn : VARIANT* -> "var"
; pwDate : WORD* out -> "var"
; pwTime : 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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procVariantToDosDateTime = propsys.NewProc("VariantToDosDateTime")
)

// varIn (VARIANT*), pwDate (WORD* out), pwTime (WORD* out)
r1, _, err := procVariantToDosDateTime.Call(
	uintptr(varIn),
	uintptr(pwDate),
	uintptr(pwTime),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VariantToDosDateTime(
  varIn: Pointer;   // VARIANT*
  pwDate: Pointer;   // WORD* out
  pwTime: Pointer   // WORD* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'VariantToDosDateTime';

result := DllCall("PROPSYS\VariantToDosDateTime"
    , "Ptr", varIn   ; VARIANT*
    , "Ptr", pwDate   ; WORD* out
    , "Ptr", pwTime   ; WORD* out
    , "Int")   ; return: HRESULT

●VariantToDosDateTime(varIn, pwDate, pwTime) = DLL("PROPSYS.dll", "int VariantToDosDateTime(void*, void*, void*)")
# 呼び出し: VariantToDosDateTime(varIn, pwDate, pwTime)
# varIn : VARIANT* -> "void*"
# pwDate : WORD* out -> "void*"
# pwTime : 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)。