SHCreateStdEnumFmtEtc

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

HRESULT SHCreateStdEnumFmtEtc(
    DWORD cfmt,
    const FORMATETC* afmt,
    IEnumFORMATETC** ppenumFormatEtc
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function SHCreateStdEnumFmtEtc(
    cfmt As UInteger,   ' DWORD
    afmt As IntPtr,   ' FORMATETC*
    ppenumFormatEtc As IntPtr   ' IEnumFORMATETC** out
) As Integer
End Function

' cfmt : DWORD
' afmt : FORMATETC*
' ppenumFormatEtc : IEnumFORMATETC** out
Declare PtrSafe Function SHCreateStdEnumFmtEtc Lib "shell32" ( _
    ByVal cfmt As Long, _
    ByVal afmt As LongPtr, _
    ByVal ppenumFormatEtc 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

SHCreateStdEnumFmtEtc = ctypes.windll.shell32.SHCreateStdEnumFmtEtc
SHCreateStdEnumFmtEtc.restype = ctypes.c_int
SHCreateStdEnumFmtEtc.argtypes = [
    wintypes.DWORD,  # cfmt : DWORD
    ctypes.c_void_p,  # afmt : FORMATETC*
    ctypes.c_void_p,  # ppenumFormatEtc : IEnumFORMATETC** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHCreateStdEnumFmtEtc = Fiddle::Function.new(
  lib['SHCreateStdEnumFmtEtc'],
  [
    -Fiddle::TYPE_INT,  # cfmt : DWORD
    Fiddle::TYPE_VOIDP,  # afmt : FORMATETC*
    Fiddle::TYPE_VOIDP,  # ppenumFormatEtc : IEnumFORMATETC** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn SHCreateStdEnumFmtEtc(
        cfmt: u32,  // DWORD
        afmt: *const FORMATETC,  // FORMATETC*
        ppenumFormatEtc: *mut *mut core::ffi::c_void  // IEnumFORMATETC** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern int SHCreateStdEnumFmtEtc(uint cfmt, IntPtr afmt, IntPtr ppenumFormatEtc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHCreateStdEnumFmtEtc' -Namespace Win32 -PassThru
# $api::SHCreateStdEnumFmtEtc(cfmt, afmt, ppenumFormatEtc)

#uselib "SHELL32.dll"
#func global SHCreateStdEnumFmtEtc "SHCreateStdEnumFmtEtc" sptr, sptr, sptr
; SHCreateStdEnumFmtEtc cfmt, varptr(afmt), ppenumFormatEtc   ; 戻り値は stat
; cfmt : DWORD -> "sptr"
; afmt : FORMATETC* -> "sptr"
; ppenumFormatEtc : IEnumFORMATETC** 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 SHCreateStdEnumFmtEtc "SHCreateStdEnumFmtEtc" int, var, sptr
; res = SHCreateStdEnumFmtEtc(cfmt, afmt, ppenumFormatEtc)
; cfmt : DWORD -> "int"
; afmt : FORMATETC* -> "var"
; ppenumFormatEtc : IEnumFORMATETC** out -> "sptr"
; ※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 SHCreateStdEnumFmtEtc(DWORD cfmt, FORMATETC* afmt, IEnumFORMATETC** ppenumFormatEtc)
#uselib "SHELL32.dll"
#cfunc global SHCreateStdEnumFmtEtc "SHCreateStdEnumFmtEtc" int, var, intptr
; res = SHCreateStdEnumFmtEtc(cfmt, afmt, ppenumFormatEtc)
; cfmt : DWORD -> "int"
; afmt : FORMATETC* -> "var"
; ppenumFormatEtc : IEnumFORMATETC** out -> "intptr"
; ※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")
	procSHCreateStdEnumFmtEtc = shell32.NewProc("SHCreateStdEnumFmtEtc")
)

// cfmt (DWORD), afmt (FORMATETC*), ppenumFormatEtc (IEnumFORMATETC** out)
r1, _, err := procSHCreateStdEnumFmtEtc.Call(
	uintptr(cfmt),
	uintptr(afmt),
	uintptr(ppenumFormatEtc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHCreateStdEnumFmtEtc(
  cfmt: DWORD;   // DWORD
  afmt: Pointer;   // FORMATETC*
  ppenumFormatEtc: Pointer   // IEnumFORMATETC** out
): Integer; stdcall;
  external 'SHELL32.dll' name 'SHCreateStdEnumFmtEtc';

result := DllCall("SHELL32\SHCreateStdEnumFmtEtc"
    , "UInt", cfmt   ; DWORD
    , "Ptr", afmt   ; FORMATETC*
    , "Ptr", ppenumFormatEtc   ; IEnumFORMATETC** out
    , "Int")   ; return: HRESULT

●SHCreateStdEnumFmtEtc(cfmt, afmt, ppenumFormatEtc) = DLL("SHELL32.dll", "int SHCreateStdEnumFmtEtc(dword, void*, void*)")
# 呼び出し: SHCreateStdEnumFmtEtc(cfmt, afmt, ppenumFormatEtc)
# cfmt : DWORD -> "dword"
# afmt : FORMATETC* -> "void*"
# ppenumFormatEtc : IEnumFORMATETC** 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)。