ホーム › System.Variant › InitVariantFromFileTime

InitVariantFromFileTime

関数

FILETIMEからVARIANTを初期化する。

DLLPROPSYS.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

HRESULT InitVariantFromFileTime(
    const FILETIME* pft,
    VARIANT* pvar
);

パラメーター

名前	型	方向
pft	FILETIME*	in
pvar	VARIANT*	out

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT InitVariantFromFileTime(
    const FILETIME* pft,
    VARIANT* pvar
);

[DllImport("PROPSYS.dll", ExactSpelling = true)]
static extern int InitVariantFromFileTime(
    IntPtr pft,   // FILETIME*
    IntPtr pvar   // VARIANT* out
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function InitVariantFromFileTime(
    pft As IntPtr,   ' FILETIME*
    pvar As IntPtr   ' VARIANT* out
) As Integer
End Function

' pft : FILETIME*
' pvar : VARIANT* out
Declare PtrSafe Function InitVariantFromFileTime Lib "propsys" ( _
    ByVal pft As LongPtr, _
    ByVal pvar 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

InitVariantFromFileTime = ctypes.windll.propsys.InitVariantFromFileTime
InitVariantFromFileTime.restype = ctypes.c_int
InitVariantFromFileTime.argtypes = [
    ctypes.c_void_p,  # pft : FILETIME*
    ctypes.c_void_p,  # pvar : VARIANT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
InitVariantFromFileTime = Fiddle::Function.new(
  lib['InitVariantFromFileTime'],
  [
    Fiddle::TYPE_VOIDP,  # pft : FILETIME*
    Fiddle::TYPE_VOIDP,  # pvar : VARIANT* out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int InitVariantFromFileTime(IntPtr pft, IntPtr pvar);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_InitVariantFromFileTime' -Namespace Win32 -PassThru
# $api::InitVariantFromFileTime(pft, pvar)

#uselib "PROPSYS.dll"
#func global InitVariantFromFileTime "InitVariantFromFileTime" sptr, sptr
; InitVariantFromFileTime varptr(pft), varptr(pvar)   ; 戻り値は stat
; pft : FILETIME* -> "sptr"
; pvar : VARIANT* 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 "PROPSYS.dll"
#cfunc global InitVariantFromFileTime "InitVariantFromFileTime" var, var
; res = InitVariantFromFileTime(pft, pvar)
; pft : FILETIME* -> "var"
; pvar : VARIANT* 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 "PROPSYS.dll"
#cfunc global InitVariantFromFileTime "InitVariantFromFileTime" sptr, sptr
; res = InitVariantFromFileTime(varptr(pft), varptr(pvar))
; pft : FILETIME* -> "sptr"
; pvar : VARIANT* 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:

; HRESULT InitVariantFromFileTime(FILETIME* pft, VARIANT* pvar)
#uselib "PROPSYS.dll"
#cfunc global InitVariantFromFileTime "InitVariantFromFileTime" var, var
; res = InitVariantFromFileTime(pft, pvar)
; pft : FILETIME* -> "var"
; pvar : VARIANT* 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 InitVariantFromFileTime(FILETIME* pft, VARIANT* pvar)
#uselib "PROPSYS.dll"
#cfunc global InitVariantFromFileTime "InitVariantFromFileTime" intptr, intptr
; res = InitVariantFromFileTime(varptr(pft), varptr(pvar))
; pft : FILETIME* -> "intptr"
; pvar : VARIANT* 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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procInitVariantFromFileTime = propsys.NewProc("InitVariantFromFileTime")
)

// pft (FILETIME*), pvar (VARIANT* out)
r1, _, err := procInitVariantFromFileTime.Call(
	uintptr(pft),
	uintptr(pvar),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function InitVariantFromFileTime(
  pft: Pointer;   // FILETIME*
  pvar: Pointer   // VARIANT* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'InitVariantFromFileTime';

result := DllCall("PROPSYS\InitVariantFromFileTime"
    , "Ptr", pft   ; FILETIME*
    , "Ptr", pvar   ; VARIANT* out
    , "Int")   ; return: HRESULT

●InitVariantFromFileTime(pft, pvar) = DLL("PROPSYS.dll", "int InitVariantFromFileTime(void*, void*)")
# 呼び出し: InitVariantFromFileTime(pft, pvar)
# pft : FILETIME* -> "void*"
# pvar : VARIANT* 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)。