VariantCopy

関数

VARIANTを別のVARIANTにコピーする。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

// OLEAUT32.dll
#include <windows.h>

HRESULT VariantCopy(
    VARIANT* pvargDest,
    const VARIANT* pvargSrc
);

パラメーター

名前	型	方向
pvargDest	VARIANT*	inout
pvargSrc	VARIANT*	in

戻り値の型: HRESULT

各言語での呼び出し定義

// OLEAUT32.dll
#include <windows.h>

HRESULT VariantCopy(
    VARIANT* pvargDest,
    const VARIANT* pvargSrc
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern int VariantCopy(
    IntPtr pvargDest,   // VARIANT* in/out
    IntPtr pvargSrc   // VARIANT*
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VariantCopy(
    pvargDest As IntPtr,   ' VARIANT* in/out
    pvargSrc As IntPtr   ' VARIANT*
) As Integer
End Function

' pvargDest : VARIANT* in/out
' pvargSrc : VARIANT*
Declare PtrSafe Function VariantCopy Lib "oleaut32" ( _
    ByVal pvargDest As LongPtr, _
    ByVal pvargSrc 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

VariantCopy = ctypes.windll.oleaut32.VariantCopy
VariantCopy.restype = ctypes.c_int
VariantCopy.argtypes = [
    ctypes.c_void_p,  # pvargDest : VARIANT* in/out
    ctypes.c_void_p,  # pvargSrc : VARIANT*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VariantCopy = Fiddle::Function.new(
  lib['VariantCopy'],
  [
    Fiddle::TYPE_VOIDP,  # pvargDest : VARIANT* in/out
    Fiddle::TYPE_VOIDP,  # pvargSrc : VARIANT*
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VariantCopy(
        pvargDest: *mut VARIANT,  // VARIANT* in/out
        pvargSrc: *const VARIANT  // VARIANT*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VariantCopy(IntPtr pvargDest, IntPtr pvargSrc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VariantCopy' -Namespace Win32 -PassThru
# $api::VariantCopy(pvargDest, pvargSrc)

#uselib "OLEAUT32.dll"
#func global VariantCopy "VariantCopy" sptr, sptr
; VariantCopy varptr(pvargDest), varptr(pvargSrc)   ; 戻り値は stat
; pvargDest : VARIANT* in/out -> "sptr"
; pvargSrc : VARIANT* -> "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 "OLEAUT32.dll"
#cfunc global VariantCopy "VariantCopy" var, var
; res = VariantCopy(pvargDest, pvargSrc)
; pvargDest : VARIANT* in/out -> "var"
; pvargSrc : VARIANT* -> "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 "OLEAUT32.dll"
#cfunc global VariantCopy "VariantCopy" sptr, sptr
; res = VariantCopy(varptr(pvargDest), varptr(pvargSrc))
; pvargDest : VARIANT* in/out -> "sptr"
; pvargSrc : VARIANT* -> "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 VariantCopy(VARIANT* pvargDest, VARIANT* pvargSrc)
#uselib "OLEAUT32.dll"
#cfunc global VariantCopy "VariantCopy" var, var
; res = VariantCopy(pvargDest, pvargSrc)
; pvargDest : VARIANT* in/out -> "var"
; pvargSrc : VARIANT* -> "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 VariantCopy(VARIANT* pvargDest, VARIANT* pvargSrc)
#uselib "OLEAUT32.dll"
#cfunc global VariantCopy "VariantCopy" intptr, intptr
; res = VariantCopy(varptr(pvargDest), varptr(pvargSrc))
; pvargDest : VARIANT* in/out -> "intptr"
; pvargSrc : VARIANT* -> "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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procVariantCopy = oleaut32.NewProc("VariantCopy")
)

// pvargDest (VARIANT* in/out), pvargSrc (VARIANT*)
r1, _, err := procVariantCopy.Call(
	uintptr(pvargDest),
	uintptr(pvargSrc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VariantCopy(
  pvargDest: Pointer;   // VARIANT* in/out
  pvargSrc: Pointer   // VARIANT*
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VariantCopy';

result := DllCall("OLEAUT32\VariantCopy"
    , "Ptr", pvargDest   ; VARIANT* in/out
    , "Ptr", pvargSrc   ; VARIANT*
    , "Int")   ; return: HRESULT

●VariantCopy(pvargDest, pvargSrc) = DLL("OLEAUT32.dll", "int VariantCopy(void*, void*)")
# 呼び出し: VariantCopy(pvargDest, pvargSrc)
# pvargDest : VARIANT* in/out -> "void*"
# pvargSrc : VARIANT* -> "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)。