VarBstrCat

関数

2つのBSTR文字列を連結し新しいBSTRを返す。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

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

HRESULT VarBstrCat(
    LPWSTR bstrLeft,
    LPWSTR bstrRight,
    LPWSTR* pbstrResult
);

パラメーター

名前	型	方向
bstrLeft	LPWSTR	in
bstrRight	LPWSTR	in
pbstrResult	LPWSTR*	out

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT VarBstrCat(
    LPWSTR bstrLeft,
    LPWSTR bstrRight,
    LPWSTR* pbstrResult
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern int VarBstrCat(
    [MarshalAs(UnmanagedType.LPWStr)] string bstrLeft,   // LPWSTR
    [MarshalAs(UnmanagedType.LPWStr)] string bstrRight,   // LPWSTR
    IntPtr pbstrResult   // LPWSTR* out
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarBstrCat(
    <MarshalAs(UnmanagedType.LPWStr)> bstrLeft As String,   ' LPWSTR
    <MarshalAs(UnmanagedType.LPWStr)> bstrRight As String,   ' LPWSTR
    pbstrResult As IntPtr   ' LPWSTR* out
) As Integer
End Function

' bstrLeft : LPWSTR
' bstrRight : LPWSTR
' pbstrResult : LPWSTR* out
Declare PtrSafe Function VarBstrCat Lib "oleaut32" ( _
    ByVal bstrLeft As LongPtr, _
    ByVal bstrRight As LongPtr, _
    ByVal pbstrResult 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

VarBstrCat = ctypes.windll.oleaut32.VarBstrCat
VarBstrCat.restype = ctypes.c_int
VarBstrCat.argtypes = [
    wintypes.LPCWSTR,  # bstrLeft : LPWSTR
    wintypes.LPCWSTR,  # bstrRight : LPWSTR
    ctypes.c_void_p,  # pbstrResult : LPWSTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarBstrCat = Fiddle::Function.new(
  lib['VarBstrCat'],
  [
    Fiddle::TYPE_VOIDP,  # bstrLeft : LPWSTR
    Fiddle::TYPE_VOIDP,  # bstrRight : LPWSTR
    Fiddle::TYPE_VOIDP,  # pbstrResult : LPWSTR* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarBstrCat(
        bstrLeft: *mut u16,  // LPWSTR
        bstrRight: *mut u16,  // LPWSTR
        pbstrResult: *mut *mut u16  // LPWSTR* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarBstrCat([MarshalAs(UnmanagedType.LPWStr)] string bstrLeft, [MarshalAs(UnmanagedType.LPWStr)] string bstrRight, IntPtr pbstrResult);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarBstrCat' -Namespace Win32 -PassThru
# $api::VarBstrCat(bstrLeft, bstrRight, pbstrResult)

#uselib "OLEAUT32.dll"
#func global VarBstrCat "VarBstrCat" sptr, sptr, sptr
; VarBstrCat bstrLeft, bstrRight, varptr(pbstrResult)   ; 戻り値は stat
; bstrLeft : LPWSTR -> "sptr"
; bstrRight : LPWSTR -> "sptr"
; pbstrResult : LPWSTR* 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 "OLEAUT32.dll"
#cfunc global VarBstrCat "VarBstrCat" wstr, wstr, var
; res = VarBstrCat(bstrLeft, bstrRight, pbstrResult)
; bstrLeft : LPWSTR -> "wstr"
; bstrRight : LPWSTR -> "wstr"
; pbstrResult : LPWSTR* 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 "OLEAUT32.dll"
#cfunc global VarBstrCat "VarBstrCat" wstr, wstr, sptr
; res = VarBstrCat(bstrLeft, bstrRight, varptr(pbstrResult))
; bstrLeft : LPWSTR -> "wstr"
; bstrRight : LPWSTR -> "wstr"
; pbstrResult : LPWSTR* 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 VarBstrCat(LPWSTR bstrLeft, LPWSTR bstrRight, LPWSTR* pbstrResult)
#uselib "OLEAUT32.dll"
#cfunc global VarBstrCat "VarBstrCat" wstr, wstr, var
; res = VarBstrCat(bstrLeft, bstrRight, pbstrResult)
; bstrLeft : LPWSTR -> "wstr"
; bstrRight : LPWSTR -> "wstr"
; pbstrResult : LPWSTR* 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 VarBstrCat(LPWSTR bstrLeft, LPWSTR bstrRight, LPWSTR* pbstrResult)
#uselib "OLEAUT32.dll"
#cfunc global VarBstrCat "VarBstrCat" wstr, wstr, intptr
; res = VarBstrCat(bstrLeft, bstrRight, varptr(pbstrResult))
; bstrLeft : LPWSTR -> "wstr"
; bstrRight : LPWSTR -> "wstr"
; pbstrResult : LPWSTR* 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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procVarBstrCat = oleaut32.NewProc("VarBstrCat")
)

// bstrLeft (LPWSTR), bstrRight (LPWSTR), pbstrResult (LPWSTR* out)
r1, _, err := procVarBstrCat.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(bstrLeft))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(bstrRight))),
	uintptr(pbstrResult),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarBstrCat(
  bstrLeft: PWideChar;   // LPWSTR
  bstrRight: PWideChar;   // LPWSTR
  pbstrResult: PPWideChar   // LPWSTR* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarBstrCat';

result := DllCall("OLEAUT32\VarBstrCat"
    , "WStr", bstrLeft   ; LPWSTR
    , "WStr", bstrRight   ; LPWSTR
    , "Ptr", pbstrResult   ; LPWSTR* out
    , "Int")   ; return: HRESULT

●VarBstrCat(bstrLeft, bstrRight, pbstrResult) = DLL("OLEAUT32.dll", "int VarBstrCat(char*, char*, void*)")
# 呼び出し: VarBstrCat(bstrLeft, bstrRight, pbstrResult)
# bstrLeft : LPWSTR -> "char*"
# bstrRight : LPWSTR -> "char*"
# pbstrResult : LPWSTR* 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)。