BstrFromVector

関数

UI1型の1次元セーフ配列をBSTR文字列に変換する。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

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

HRESULT BstrFromVector(
    SAFEARRAY* psa,
    LPWSTR* pbstr
);

パラメーター

名前	型	方向
psa	SAFEARRAY*	in
pbstr	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 BstrFromVector(
    SAFEARRAY* psa,
    LPWSTR* pbstr
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern int BstrFromVector(
    IntPtr psa,   // SAFEARRAY*
    IntPtr pbstr   // LPWSTR* out
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function BstrFromVector(
    psa As IntPtr,   ' SAFEARRAY*
    pbstr As IntPtr   ' LPWSTR* out
) As Integer
End Function

' psa : SAFEARRAY*
' pbstr : LPWSTR* out
Declare PtrSafe Function BstrFromVector Lib "oleaut32" ( _
    ByVal psa As LongPtr, _
    ByVal pbstr 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

BstrFromVector = ctypes.windll.oleaut32.BstrFromVector
BstrFromVector.restype = ctypes.c_int
BstrFromVector.argtypes = [
    ctypes.c_void_p,  # psa : SAFEARRAY*
    ctypes.c_void_p,  # pbstr : LPWSTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
BstrFromVector = Fiddle::Function.new(
  lib['BstrFromVector'],
  [
    Fiddle::TYPE_VOIDP,  # psa : SAFEARRAY*
    Fiddle::TYPE_VOIDP,  # pbstr : LPWSTR* out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int BstrFromVector(IntPtr psa, IntPtr pbstr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_BstrFromVector' -Namespace Win32 -PassThru
# $api::BstrFromVector(psa, pbstr)

#uselib "OLEAUT32.dll"
#func global BstrFromVector "BstrFromVector" sptr, sptr
; BstrFromVector varptr(psa), varptr(pbstr)   ; 戻り値は stat
; psa : SAFEARRAY* -> "sptr"
; pbstr : 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 BstrFromVector "BstrFromVector" var, var
; res = BstrFromVector(psa, pbstr)
; psa : SAFEARRAY* -> "var"
; pbstr : 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 BstrFromVector "BstrFromVector" sptr, sptr
; res = BstrFromVector(varptr(psa), varptr(pbstr))
; psa : SAFEARRAY* -> "sptr"
; pbstr : 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 BstrFromVector(SAFEARRAY* psa, LPWSTR* pbstr)
#uselib "OLEAUT32.dll"
#cfunc global BstrFromVector "BstrFromVector" var, var
; res = BstrFromVector(psa, pbstr)
; psa : SAFEARRAY* -> "var"
; pbstr : 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 BstrFromVector(SAFEARRAY* psa, LPWSTR* pbstr)
#uselib "OLEAUT32.dll"
#cfunc global BstrFromVector "BstrFromVector" intptr, intptr
; res = BstrFromVector(varptr(psa), varptr(pbstr))
; psa : SAFEARRAY* -> "intptr"
; pbstr : 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")
	procBstrFromVector = oleaut32.NewProc("BstrFromVector")
)

// psa (SAFEARRAY*), pbstr (LPWSTR* out)
r1, _, err := procBstrFromVector.Call(
	uintptr(psa),
	uintptr(pbstr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function BstrFromVector(
  psa: Pointer;   // SAFEARRAY*
  pbstr: PPWideChar   // LPWSTR* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'BstrFromVector';

result := DllCall("OLEAUT32\BstrFromVector"
    , "Ptr", psa   ; SAFEARRAY*
    , "Ptr", pbstr   ; LPWSTR* out
    , "Int")   ; return: HRESULT

●BstrFromVector(psa, pbstr) = DLL("OLEAUT32.dll", "int BstrFromVector(void*, void*)")
# 呼び出し: BstrFromVector(psa, pbstr)
# psa : SAFEARRAY* -> "void*"
# pbstr : 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)。