VariantToUInt64

関数

VARIANTを64ビット符号なし整数へ変換して取得する。

DLLPROPSYS.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

HRESULT VariantToUInt64(
    const VARIANT* varIn,
    ULONGLONG* pullRet
);

パラメーター

名前	型	方向
varIn	VARIANT*	in
pullRet	ULONGLONG*	out

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT VariantToUInt64(
    const VARIANT* varIn,
    ULONGLONG* pullRet
);

[DllImport("PROPSYS.dll", ExactSpelling = true)]
static extern int VariantToUInt64(
    IntPtr varIn,   // VARIANT*
    out ulong pullRet   // ULONGLONG* out
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function VariantToUInt64(
    varIn As IntPtr,   ' VARIANT*
    <Out> ByRef pullRet As ULong   ' ULONGLONG* out
) As Integer
End Function

' varIn : VARIANT*
' pullRet : ULONGLONG* out
Declare PtrSafe Function VariantToUInt64 Lib "propsys" ( _
    ByVal varIn As LongPtr, _
    ByRef pullRet As LongLong) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VariantToUInt64 = ctypes.windll.propsys.VariantToUInt64
VariantToUInt64.restype = ctypes.c_int
VariantToUInt64.argtypes = [
    ctypes.c_void_p,  # varIn : VARIANT*
    ctypes.POINTER(ctypes.c_ulonglong),  # pullRet : ULONGLONG* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
VariantToUInt64 = Fiddle::Function.new(
  lib['VariantToUInt64'],
  [
    Fiddle::TYPE_VOIDP,  # varIn : VARIANT*
    Fiddle::TYPE_VOIDP,  # pullRet : ULONGLONG* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn VariantToUInt64(
        varIn: *const VARIANT,  // VARIANT*
        pullRet: *mut u64  // ULONGLONG* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int VariantToUInt64(IntPtr varIn, out ulong pullRet);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_VariantToUInt64' -Namespace Win32 -PassThru
# $api::VariantToUInt64(varIn, pullRet)

#uselib "PROPSYS.dll"
#func global VariantToUInt64 "VariantToUInt64" sptr, sptr
; VariantToUInt64 varptr(varIn), varptr(pullRet)   ; 戻り値は stat
; varIn : VARIANT* -> "sptr"
; pullRet : ULONGLONG* 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 VariantToUInt64 "VariantToUInt64" var, var
; res = VariantToUInt64(varIn, pullRet)
; varIn : VARIANT* -> "var"
; pullRet : ULONGLONG* 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 VariantToUInt64 "VariantToUInt64" sptr, sptr
; res = VariantToUInt64(varptr(varIn), varptr(pullRet))
; varIn : VARIANT* -> "sptr"
; pullRet : ULONGLONG* 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 VariantToUInt64(VARIANT* varIn, ULONGLONG* pullRet)
#uselib "PROPSYS.dll"
#cfunc global VariantToUInt64 "VariantToUInt64" var, var
; res = VariantToUInt64(varIn, pullRet)
; varIn : VARIANT* -> "var"
; pullRet : ULONGLONG* 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 VariantToUInt64(VARIANT* varIn, ULONGLONG* pullRet)
#uselib "PROPSYS.dll"
#cfunc global VariantToUInt64 "VariantToUInt64" intptr, intptr
; res = VariantToUInt64(varptr(varIn), varptr(pullRet))
; varIn : VARIANT* -> "intptr"
; pullRet : ULONGLONG* 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")
	procVariantToUInt64 = propsys.NewProc("VariantToUInt64")
)

// varIn (VARIANT*), pullRet (ULONGLONG* out)
r1, _, err := procVariantToUInt64.Call(
	uintptr(varIn),
	uintptr(pullRet),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VariantToUInt64(
  varIn: Pointer;   // VARIANT*
  pullRet: Pointer   // ULONGLONG* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'VariantToUInt64';

result := DllCall("PROPSYS\VariantToUInt64"
    , "Ptr", varIn   ; VARIANT*
    , "Ptr", pullRet   ; ULONGLONG* out
    , "Int")   ; return: HRESULT

●VariantToUInt64(varIn, pullRet) = DLL("PROPSYS.dll", "int VariantToUInt64(void*, void*)")
# 呼び出し: VariantToUInt64(varIn, pullRet)
# varIn : VARIANT* -> "void*"
# pullRet : ULONGLONG* 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)。