CreateFormatEnumerator

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

HRESULT CreateFormatEnumerator(
    DWORD cfmtetc,
    FORMATETC* rgfmtetc,
    IEnumFORMATETC** ppenumfmtetc
);

<DllImport("urlmon.dll", ExactSpelling:=True)>
Public Shared Function CreateFormatEnumerator(
    cfmtetc As UInteger,   ' DWORD
    rgfmtetc As IntPtr,   ' FORMATETC*
    ppenumfmtetc As IntPtr   ' IEnumFORMATETC** out
) As Integer
End Function

' cfmtetc : DWORD
' rgfmtetc : FORMATETC*
' ppenumfmtetc : IEnumFORMATETC** out
Declare PtrSafe Function CreateFormatEnumerator Lib "urlmon" ( _
    ByVal cfmtetc As Long, _
    ByVal rgfmtetc As LongPtr, _
    ByVal ppenumfmtetc 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

CreateFormatEnumerator = ctypes.windll.urlmon.CreateFormatEnumerator
CreateFormatEnumerator.restype = ctypes.c_int
CreateFormatEnumerator.argtypes = [
    wintypes.DWORD,  # cfmtetc : DWORD
    ctypes.c_void_p,  # rgfmtetc : FORMATETC*
    ctypes.c_void_p,  # ppenumfmtetc : IEnumFORMATETC** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('urlmon.dll')
CreateFormatEnumerator = Fiddle::Function.new(
  lib['CreateFormatEnumerator'],
  [
    -Fiddle::TYPE_INT,  # cfmtetc : DWORD
    Fiddle::TYPE_VOIDP,  # rgfmtetc : FORMATETC*
    Fiddle::TYPE_VOIDP,  # ppenumfmtetc : IEnumFORMATETC** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "urlmon")]
extern "system" {
    fn CreateFormatEnumerator(
        cfmtetc: u32,  // DWORD
        rgfmtetc: *mut FORMATETC,  // FORMATETC*
        ppenumfmtetc: *mut *mut core::ffi::c_void  // IEnumFORMATETC** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("urlmon.dll")]
public static extern int CreateFormatEnumerator(uint cfmtetc, IntPtr rgfmtetc, IntPtr ppenumfmtetc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'urlmon_CreateFormatEnumerator' -Namespace Win32 -PassThru
# $api::CreateFormatEnumerator(cfmtetc, rgfmtetc, ppenumfmtetc)

#uselib "urlmon.dll"
#func global CreateFormatEnumerator "CreateFormatEnumerator" sptr, sptr, sptr
; CreateFormatEnumerator cfmtetc, varptr(rgfmtetc), ppenumfmtetc   ; 戻り値は stat
; cfmtetc : DWORD -> "sptr"
; rgfmtetc : FORMATETC* -> "sptr"
; ppenumfmtetc : 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 "urlmon.dll"
#cfunc global CreateFormatEnumerator "CreateFormatEnumerator" int, var, sptr
; res = CreateFormatEnumerator(cfmtetc, rgfmtetc, ppenumfmtetc)
; cfmtetc : DWORD -> "int"
; rgfmtetc : FORMATETC* -> "var"
; ppenumfmtetc : 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 CreateFormatEnumerator(DWORD cfmtetc, FORMATETC* rgfmtetc, IEnumFORMATETC** ppenumfmtetc)
#uselib "urlmon.dll"
#cfunc global CreateFormatEnumerator "CreateFormatEnumerator" int, var, intptr
; res = CreateFormatEnumerator(cfmtetc, rgfmtetc, ppenumfmtetc)
; cfmtetc : DWORD -> "int"
; rgfmtetc : FORMATETC* -> "var"
; ppenumfmtetc : 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 (
	urlmon = windows.NewLazySystemDLL("urlmon.dll")
	procCreateFormatEnumerator = urlmon.NewProc("CreateFormatEnumerator")
)

// cfmtetc (DWORD), rgfmtetc (FORMATETC*), ppenumfmtetc (IEnumFORMATETC** out)
r1, _, err := procCreateFormatEnumerator.Call(
	uintptr(cfmtetc),
	uintptr(rgfmtetc),
	uintptr(ppenumfmtetc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CreateFormatEnumerator(
  cfmtetc: DWORD;   // DWORD
  rgfmtetc: Pointer;   // FORMATETC*
  ppenumfmtetc: Pointer   // IEnumFORMATETC** out
): Integer; stdcall;
  external 'urlmon.dll' name 'CreateFormatEnumerator';

result := DllCall("urlmon\CreateFormatEnumerator"
    , "UInt", cfmtetc   ; DWORD
    , "Ptr", rgfmtetc   ; FORMATETC*
    , "Ptr", ppenumfmtetc   ; IEnumFORMATETC** out
    , "Int")   ; return: HRESULT

●CreateFormatEnumerator(cfmtetc, rgfmtetc, ppenumfmtetc) = DLL("urlmon.dll", "int CreateFormatEnumerator(dword, void*, void*)")
# 呼び出し: CreateFormatEnumerator(cfmtetc, rgfmtetc, ppenumfmtetc)
# cfmtetc : DWORD -> "dword"
# rgfmtetc : FORMATETC* -> "void*"
# ppenumfmtetc : 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)。