ILLoadFromStreamEx

// SHELL32.dll
#include <windows.h>

HRESULT ILLoadFromStreamEx(
    IStream* pstm,
    ITEMIDLIST** pidl
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function ILLoadFromStreamEx(
    pstm As IntPtr,   ' IStream*
    pidl As IntPtr   ' ITEMIDLIST** out
) As Integer
End Function

' pstm : IStream*
' pidl : ITEMIDLIST** out
Declare PtrSafe Function ILLoadFromStreamEx Lib "shell32" ( _
    ByVal pstm As LongPtr, _
    ByVal pidl 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

ILLoadFromStreamEx = ctypes.windll.shell32.ILLoadFromStreamEx
ILLoadFromStreamEx.restype = ctypes.c_int
ILLoadFromStreamEx.argtypes = [
    ctypes.c_void_p,  # pstm : IStream*
    ctypes.c_void_p,  # pidl : ITEMIDLIST** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
ILLoadFromStreamEx = Fiddle::Function.new(
  lib['ILLoadFromStreamEx'],
  [
    Fiddle::TYPE_VOIDP,  # pstm : IStream*
    Fiddle::TYPE_VOIDP,  # pidl : ITEMIDLIST** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn ILLoadFromStreamEx(
        pstm: *mut core::ffi::c_void,  // IStream*
        pidl: *mut *mut ITEMIDLIST  // ITEMIDLIST** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern int ILLoadFromStreamEx(IntPtr pstm, IntPtr pidl);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_ILLoadFromStreamEx' -Namespace Win32 -PassThru
# $api::ILLoadFromStreamEx(pstm, pidl)

#uselib "SHELL32.dll"
#func global ILLoadFromStreamEx "ILLoadFromStreamEx" sptr, sptr
; ILLoadFromStreamEx pstm, varptr(pidl)   ; 戻り値は stat
; pstm : IStream* -> "sptr"
; pidl : ITEMIDLIST** 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 "SHELL32.dll"
#cfunc global ILLoadFromStreamEx "ILLoadFromStreamEx" sptr, var
; res = ILLoadFromStreamEx(pstm, pidl)
; pstm : IStream* -> "sptr"
; pidl : ITEMIDLIST** 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 ILLoadFromStreamEx(IStream* pstm, ITEMIDLIST** pidl)
#uselib "SHELL32.dll"
#cfunc global ILLoadFromStreamEx "ILLoadFromStreamEx" intptr, var
; res = ILLoadFromStreamEx(pstm, pidl)
; pstm : IStream* -> "intptr"
; pidl : ITEMIDLIST** 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 (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procILLoadFromStreamEx = shell32.NewProc("ILLoadFromStreamEx")
)

// pstm (IStream*), pidl (ITEMIDLIST** out)
r1, _, err := procILLoadFromStreamEx.Call(
	uintptr(pstm),
	uintptr(pidl),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function ILLoadFromStreamEx(
  pstm: Pointer;   // IStream*
  pidl: Pointer   // ITEMIDLIST** out
): Integer; stdcall;
  external 'SHELL32.dll' name 'ILLoadFromStreamEx';

result := DllCall("SHELL32\ILLoadFromStreamEx"
    , "Ptr", pstm   ; IStream*
    , "Ptr", pidl   ; ITEMIDLIST** out
    , "Int")   ; return: HRESULT

●ILLoadFromStreamEx(pstm, pidl) = DLL("SHELL32.dll", "int ILLoadFromStreamEx(void*, void*)")
# 呼び出し: ILLoadFromStreamEx(pstm, pidl)
# pstm : IStream* -> "void*"
# pidl : ITEMIDLIST** 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)。