SafeArrayLock

関数

SAFEARRAYをロックしデータへの直接アクセスを可能にする。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

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

HRESULT SafeArrayLock(
    SAFEARRAY* psa
);

パラメーター

名前	型	方向
psa	SAFEARRAY*	in

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT SafeArrayLock(
    SAFEARRAY* psa
);

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

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

' psa : SAFEARRAY*
Declare PtrSafe Function SafeArrayLock Lib "oleaut32" ( _
    ByVal psa 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

SafeArrayLock = ctypes.windll.oleaut32.SafeArrayLock
SafeArrayLock.restype = ctypes.c_int
SafeArrayLock.argtypes = [
    ctypes.c_void_p,  # psa : SAFEARRAY*
]

require 'fiddle'
require 'fiddle/import'

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

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

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int SafeArrayLock(IntPtr psa);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_SafeArrayLock' -Namespace Win32 -PassThru
# $api::SafeArrayLock(psa)

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

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

function SafeArrayLock(
  psa: Pointer   // SAFEARRAY*
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'SafeArrayLock';

result := DllCall("OLEAUT32\SafeArrayLock"
    , "Ptr", psa   ; SAFEARRAY*
    , "Int")   ; return: HRESULT

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