VariantToUInt16Array

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

HRESULT VariantToUInt16Array(
    const VARIANT* var,
    WORD* prgn,
    DWORD crgn,
    DWORD* pcElem
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function VariantToUInt16Array(
    var As IntPtr,   ' VARIANT*
    <Out> ByRef prgn As UShort,   ' WORD* out
    crgn As UInteger,   ' DWORD
    <Out> ByRef pcElem As UInteger   ' DWORD* out
) As Integer
End Function

' var : VARIANT*
' prgn : WORD* out
' crgn : DWORD
' pcElem : DWORD* out
Declare PtrSafe Function VariantToUInt16Array Lib "propsys" ( _
    ByVal var As LongPtr, _
    ByRef prgn As Integer, _
    ByVal crgn As Long, _
    ByRef pcElem As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VariantToUInt16Array = ctypes.windll.propsys.VariantToUInt16Array
VariantToUInt16Array.restype = ctypes.c_int
VariantToUInt16Array.argtypes = [
    ctypes.c_void_p,  # var : VARIANT*
    ctypes.POINTER(ctypes.c_ushort),  # prgn : WORD* out
    wintypes.DWORD,  # crgn : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcElem : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
VariantToUInt16Array = Fiddle::Function.new(
  lib['VariantToUInt16Array'],
  [
    Fiddle::TYPE_VOIDP,  # var : VARIANT*
    Fiddle::TYPE_VOIDP,  # prgn : WORD* out
    -Fiddle::TYPE_INT,  # crgn : DWORD
    Fiddle::TYPE_VOIDP,  # pcElem : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn VariantToUInt16Array(
        var: *const VARIANT,  // VARIANT*
        prgn: *mut u16,  // WORD* out
        crgn: u32,  // DWORD
        pcElem: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int VariantToUInt16Array(IntPtr var, out ushort prgn, uint crgn, out uint pcElem);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_VariantToUInt16Array' -Namespace Win32 -PassThru
# $api::VariantToUInt16Array(var, prgn, crgn, pcElem)

#uselib "PROPSYS.dll"
#func global VariantToUInt16Array "VariantToUInt16Array" sptr, sptr, sptr, sptr
; VariantToUInt16Array varptr(var), varptr(prgn), crgn, varptr(pcElem)   ; 戻り値は stat
; var : VARIANT* -> "sptr"
; prgn : WORD* out -> "sptr"
; crgn : DWORD -> "sptr"
; pcElem : DWORD* 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 "PROPSYS.dll"
#cfunc global VariantToUInt16Array "VariantToUInt16Array" var, var, int, var
; res = VariantToUInt16Array(var, prgn, crgn, pcElem)
; var : VARIANT* -> "var"
; prgn : WORD* out -> "var"
; crgn : DWORD -> "int"
; pcElem : DWORD* 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 VariantToUInt16Array(VARIANT* var, WORD* prgn, DWORD crgn, DWORD* pcElem)
#uselib "PROPSYS.dll"
#cfunc global VariantToUInt16Array "VariantToUInt16Array" var, var, int, var
; res = VariantToUInt16Array(var, prgn, crgn, pcElem)
; var : VARIANT* -> "var"
; prgn : WORD* out -> "var"
; crgn : DWORD -> "int"
; pcElem : DWORD* 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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procVariantToUInt16Array = propsys.NewProc("VariantToUInt16Array")
)

// var (VARIANT*), prgn (WORD* out), crgn (DWORD), pcElem (DWORD* out)
r1, _, err := procVariantToUInt16Array.Call(
	uintptr(var),
	uintptr(prgn),
	uintptr(crgn),
	uintptr(pcElem),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VariantToUInt16Array(
  var: Pointer;   // VARIANT*
  prgn: Pointer;   // WORD* out
  crgn: DWORD;   // DWORD
  pcElem: Pointer   // DWORD* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'VariantToUInt16Array';

result := DllCall("PROPSYS\VariantToUInt16Array"
    , "Ptr", var   ; VARIANT*
    , "Ptr", prgn   ; WORD* out
    , "UInt", crgn   ; DWORD
    , "Ptr", pcElem   ; DWORD* out
    , "Int")   ; return: HRESULT

●VariantToUInt16Array(var, prgn, crgn, pcElem) = DLL("PROPSYS.dll", "int VariantToUInt16Array(void*, void*, dword, void*)")
# 呼び出し: VariantToUInt16Array(var, prgn, crgn, pcElem)
# var : VARIANT* -> "void*"
# prgn : WORD* out -> "void*"
# crgn : DWORD -> "dword"
# pcElem : DWORD* 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)。