PropVariantToStringVector

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

HRESULT PropVariantToStringVector(
    const PROPVARIANT* propvar,
    LPWSTR* prgsz,
    DWORD crgsz,
    DWORD* pcElem
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function PropVariantToStringVector(
    propvar As IntPtr,   ' PROPVARIANT*
    prgsz As IntPtr,   ' LPWSTR* out
    crgsz As UInteger,   ' DWORD
    <Out> ByRef pcElem As UInteger   ' DWORD* out
) As Integer
End Function

' propvar : PROPVARIANT*
' prgsz : LPWSTR* out
' crgsz : DWORD
' pcElem : DWORD* out
Declare PtrSafe Function PropVariantToStringVector Lib "propsys" ( _
    ByVal propvar As LongPtr, _
    ByVal prgsz As LongPtr, _
    ByVal crgsz 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

PropVariantToStringVector = ctypes.windll.propsys.PropVariantToStringVector
PropVariantToStringVector.restype = ctypes.c_int
PropVariantToStringVector.argtypes = [
    ctypes.c_void_p,  # propvar : PROPVARIANT*
    ctypes.c_void_p,  # prgsz : LPWSTR* out
    wintypes.DWORD,  # crgsz : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcElem : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
PropVariantToStringVector = Fiddle::Function.new(
  lib['PropVariantToStringVector'],
  [
    Fiddle::TYPE_VOIDP,  # propvar : PROPVARIANT*
    Fiddle::TYPE_VOIDP,  # prgsz : LPWSTR* out
    -Fiddle::TYPE_INT,  # crgsz : DWORD
    Fiddle::TYPE_VOIDP,  # pcElem : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn PropVariantToStringVector(
        propvar: *const PROPVARIANT,  // PROPVARIANT*
        prgsz: *mut *mut u16,  // LPWSTR* out
        crgsz: 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 PropVariantToStringVector(IntPtr propvar, IntPtr prgsz, uint crgsz, out uint pcElem);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_PropVariantToStringVector' -Namespace Win32 -PassThru
# $api::PropVariantToStringVector(propvar, prgsz, crgsz, pcElem)

#uselib "PROPSYS.dll"
#func global PropVariantToStringVector "PropVariantToStringVector" sptr, sptr, sptr, sptr
; PropVariantToStringVector varptr(propvar), varptr(prgsz), crgsz, varptr(pcElem)   ; 戻り値は stat
; propvar : PROPVARIANT* -> "sptr"
; prgsz : LPWSTR* out -> "sptr"
; crgsz : 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 PropVariantToStringVector "PropVariantToStringVector" var, var, int, var
; res = PropVariantToStringVector(propvar, prgsz, crgsz, pcElem)
; propvar : PROPVARIANT* -> "var"
; prgsz : LPWSTR* out -> "var"
; crgsz : 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 PropVariantToStringVector(PROPVARIANT* propvar, LPWSTR* prgsz, DWORD crgsz, DWORD* pcElem)
#uselib "PROPSYS.dll"
#cfunc global PropVariantToStringVector "PropVariantToStringVector" var, var, int, var
; res = PropVariantToStringVector(propvar, prgsz, crgsz, pcElem)
; propvar : PROPVARIANT* -> "var"
; prgsz : LPWSTR* out -> "var"
; crgsz : 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")
	procPropVariantToStringVector = propsys.NewProc("PropVariantToStringVector")
)

// propvar (PROPVARIANT*), prgsz (LPWSTR* out), crgsz (DWORD), pcElem (DWORD* out)
r1, _, err := procPropVariantToStringVector.Call(
	uintptr(propvar),
	uintptr(prgsz),
	uintptr(crgsz),
	uintptr(pcElem),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PropVariantToStringVector(
  propvar: Pointer;   // PROPVARIANT*
  prgsz: PPWideChar;   // LPWSTR* out
  crgsz: DWORD;   // DWORD
  pcElem: Pointer   // DWORD* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'PropVariantToStringVector';

result := DllCall("PROPSYS\PropVariantToStringVector"
    , "Ptr", propvar   ; PROPVARIANT*
    , "Ptr", prgsz   ; LPWSTR* out
    , "UInt", crgsz   ; DWORD
    , "Ptr", pcElem   ; DWORD* out
    , "Int")   ; return: HRESULT

●PropVariantToStringVector(propvar, prgsz, crgsz, pcElem) = DLL("PROPSYS.dll", "int PropVariantToStringVector(void*, void*, dword, void*)")
# 呼び出し: PropVariantToStringVector(propvar, prgsz, crgsz, pcElem)
# propvar : PROPVARIANT* -> "void*"
# prgsz : LPWSTR* out -> "void*"
# crgsz : 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)。