VectorFromBstr

関数

BSTR文字列の各文字をUI1型の1次元セーフ配列に変換する。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

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

HRESULT VectorFromBstr(
    LPWSTR bstr,
    SAFEARRAY** ppsa
);

パラメーター

名前	型	方向
bstr	LPWSTR	in
ppsa	SAFEARRAY**	out

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT VectorFromBstr(
    LPWSTR bstr,
    SAFEARRAY** ppsa
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern int VectorFromBstr(
    [MarshalAs(UnmanagedType.LPWStr)] string bstr,   // LPWSTR
    IntPtr ppsa   // SAFEARRAY** out
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VectorFromBstr(
    <MarshalAs(UnmanagedType.LPWStr)> bstr As String,   ' LPWSTR
    ppsa As IntPtr   ' SAFEARRAY** out
) As Integer
End Function

' bstr : LPWSTR
' ppsa : SAFEARRAY** out
Declare PtrSafe Function VectorFromBstr Lib "oleaut32" ( _
    ByVal bstr As LongPtr, _
    ByVal ppsa 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

VectorFromBstr = ctypes.windll.oleaut32.VectorFromBstr
VectorFromBstr.restype = ctypes.c_int
VectorFromBstr.argtypes = [
    wintypes.LPCWSTR,  # bstr : LPWSTR
    ctypes.c_void_p,  # ppsa : SAFEARRAY** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VectorFromBstr = Fiddle::Function.new(
  lib['VectorFromBstr'],
  [
    Fiddle::TYPE_VOIDP,  # bstr : LPWSTR
    Fiddle::TYPE_VOIDP,  # ppsa : SAFEARRAY** out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VectorFromBstr([MarshalAs(UnmanagedType.LPWStr)] string bstr, IntPtr ppsa);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VectorFromBstr' -Namespace Win32 -PassThru
# $api::VectorFromBstr(bstr, ppsa)

#uselib "OLEAUT32.dll"
#func global VectorFromBstr "VectorFromBstr" sptr, sptr
; VectorFromBstr bstr, varptr(ppsa)   ; 戻り値は stat
; bstr : LPWSTR -> "sptr"
; ppsa : SAFEARRAY** 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 VectorFromBstr "VectorFromBstr" wstr, var
; res = VectorFromBstr(bstr, ppsa)
; bstr : LPWSTR -> "wstr"
; ppsa : SAFEARRAY** 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 VectorFromBstr "VectorFromBstr" wstr, sptr
; res = VectorFromBstr(bstr, varptr(ppsa))
; bstr : LPWSTR -> "wstr"
; ppsa : SAFEARRAY** 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 VectorFromBstr(LPWSTR bstr, SAFEARRAY** ppsa)
#uselib "OLEAUT32.dll"
#cfunc global VectorFromBstr "VectorFromBstr" wstr, var
; res = VectorFromBstr(bstr, ppsa)
; bstr : LPWSTR -> "wstr"
; ppsa : SAFEARRAY** 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 VectorFromBstr(LPWSTR bstr, SAFEARRAY** ppsa)
#uselib "OLEAUT32.dll"
#cfunc global VectorFromBstr "VectorFromBstr" wstr, intptr
; res = VectorFromBstr(bstr, varptr(ppsa))
; bstr : LPWSTR -> "wstr"
; ppsa : SAFEARRAY** 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")
	procVectorFromBstr = oleaut32.NewProc("VectorFromBstr")
)

// bstr (LPWSTR), ppsa (SAFEARRAY** out)
r1, _, err := procVectorFromBstr.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(bstr))),
	uintptr(ppsa),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VectorFromBstr(
  bstr: PWideChar;   // LPWSTR
  ppsa: Pointer   // SAFEARRAY** out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VectorFromBstr';

result := DllCall("OLEAUT32\VectorFromBstr"
    , "WStr", bstr   ; LPWSTR
    , "Ptr", ppsa   ; SAFEARRAY** out
    , "Int")   ; return: HRESULT

●VectorFromBstr(bstr, ppsa) = DLL("OLEAUT32.dll", "int VectorFromBstr(char*, void*)")
# 呼び出し: VectorFromBstr(bstr, ppsa)
# bstr : LPWSTR -> "char*"
# ppsa : SAFEARRAY** 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)。