SafeArrayAllocDescriptor

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

HRESULT SafeArrayAllocDescriptor(
    DWORD cDims,
    SAFEARRAY** ppsaOut
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function SafeArrayAllocDescriptor(
    cDims As UInteger,   ' DWORD
    ppsaOut As IntPtr   ' SAFEARRAY** out
) As Integer
End Function

' cDims : DWORD
' ppsaOut : SAFEARRAY** out
Declare PtrSafe Function SafeArrayAllocDescriptor Lib "oleaut32" ( _
    ByVal cDims As Long, _
    ByVal ppsaOut 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

SafeArrayAllocDescriptor = ctypes.windll.oleaut32.SafeArrayAllocDescriptor
SafeArrayAllocDescriptor.restype = ctypes.c_int
SafeArrayAllocDescriptor.argtypes = [
    wintypes.DWORD,  # cDims : DWORD
    ctypes.c_void_p,  # ppsaOut : SAFEARRAY** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
SafeArrayAllocDescriptor = Fiddle::Function.new(
  lib['SafeArrayAllocDescriptor'],
  [
    -Fiddle::TYPE_INT,  # cDims : DWORD
    Fiddle::TYPE_VOIDP,  # ppsaOut : SAFEARRAY** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn SafeArrayAllocDescriptor(
        cDims: u32,  // DWORD
        ppsaOut: *mut *mut SAFEARRAY  // SAFEARRAY** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int SafeArrayAllocDescriptor(uint cDims, IntPtr ppsaOut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_SafeArrayAllocDescriptor' -Namespace Win32 -PassThru
# $api::SafeArrayAllocDescriptor(cDims, ppsaOut)

#uselib "OLEAUT32.dll"
#func global SafeArrayAllocDescriptor "SafeArrayAllocDescriptor" sptr, sptr
; SafeArrayAllocDescriptor cDims, varptr(ppsaOut)   ; 戻り値は stat
; cDims : DWORD -> "sptr"
; ppsaOut : 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。

#uselib "OLEAUT32.dll"
#cfunc global SafeArrayAllocDescriptor "SafeArrayAllocDescriptor" int, var
; res = SafeArrayAllocDescriptor(cDims, ppsaOut)
; cDims : DWORD -> "int"
; ppsaOut : 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 SafeArrayAllocDescriptor(DWORD cDims, SAFEARRAY** ppsaOut)
#uselib "OLEAUT32.dll"
#cfunc global SafeArrayAllocDescriptor "SafeArrayAllocDescriptor" int, var
; res = SafeArrayAllocDescriptor(cDims, ppsaOut)
; cDims : DWORD -> "int"
; ppsaOut : 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。

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

var (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procSafeArrayAllocDescriptor = oleaut32.NewProc("SafeArrayAllocDescriptor")
)

// cDims (DWORD), ppsaOut (SAFEARRAY** out)
r1, _, err := procSafeArrayAllocDescriptor.Call(
	uintptr(cDims),
	uintptr(ppsaOut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SafeArrayAllocDescriptor(
  cDims: DWORD;   // DWORD
  ppsaOut: Pointer   // SAFEARRAY** out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'SafeArrayAllocDescriptor';

result := DllCall("OLEAUT32\SafeArrayAllocDescriptor"
    , "UInt", cDims   ; DWORD
    , "Ptr", ppsaOut   ; SAFEARRAY** out
    , "Int")   ; return: HRESULT

●SafeArrayAllocDescriptor(cDims, ppsaOut) = DLL("OLEAUT32.dll", "int SafeArrayAllocDescriptor(dword, void*)")
# 呼び出し: SafeArrayAllocDescriptor(cDims, ppsaOut)
# cDims : DWORD -> "dword"
# ppsaOut : 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)。