SysAddRefString

関数

BSTRの参照カウントを増加させる。

DLLOLEAUT32.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

HRESULT SysAddRefString(
    LPWSTR bstrString
);

パラメーター

名前	型	方向
bstrString	LPWSTR	in

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT SysAddRefString(
    LPWSTR bstrString
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern int SysAddRefString(
    [MarshalAs(UnmanagedType.LPWStr)] string bstrString   // LPWSTR
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function SysAddRefString(
    <MarshalAs(UnmanagedType.LPWStr)> bstrString As String   ' LPWSTR
) As Integer
End Function

' bstrString : LPWSTR
Declare PtrSafe Function SysAddRefString Lib "oleaut32" ( _
    ByVal bstrString 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

SysAddRefString = ctypes.windll.oleaut32.SysAddRefString
SysAddRefString.restype = ctypes.c_int
SysAddRefString.argtypes = [
    wintypes.LPCWSTR,  # bstrString : LPWSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
SysAddRefString = Fiddle::Function.new(
  lib['SysAddRefString'],
  [
    Fiddle::TYPE_VOIDP,  # bstrString : LPWSTR
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int SysAddRefString([MarshalAs(UnmanagedType.LPWStr)] string bstrString);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_SysAddRefString' -Namespace Win32 -PassThru
# $api::SysAddRefString(bstrString)

#uselib "OLEAUT32.dll"
#func global SysAddRefString "SysAddRefString" sptr
; SysAddRefString bstrString   ; 戻り値は stat
; bstrString : LPWSTR -> "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。

#uselib "OLEAUT32.dll"
#cfunc global SysAddRefString "SysAddRefString" wstr
; res = SysAddRefString(bstrString)
; bstrString : LPWSTR -> "wstr"

; HRESULT SysAddRefString(LPWSTR bstrString)
#uselib "OLEAUT32.dll"
#cfunc global SysAddRefString "SysAddRefString" wstr
; res = SysAddRefString(bstrString)
; bstrString : LPWSTR -> "wstr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procSysAddRefString = oleaut32.NewProc("SysAddRefString")
)

// bstrString (LPWSTR)
r1, _, err := procSysAddRefString.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(bstrString))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SysAddRefString(
  bstrString: PWideChar   // LPWSTR
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'SysAddRefString';

result := DllCall("OLEAUT32\SysAddRefString"
    , "WStr", bstrString   ; LPWSTR
    , "Int")   ; return: HRESULT

●SysAddRefString(bstrString) = DLL("OLEAUT32.dll", "int SysAddRefString(char*)")
# 呼び出し: SysAddRefString(bstrString)
# bstrString : LPWSTR -> "char*"
# 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)。