RegisterFormatEnumerator

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

HRESULT RegisterFormatEnumerator(
    IBindCtx* pBC,
    IEnumFORMATETC* pEFetc,
    DWORD reserved
);

<DllImport("urlmon.dll", ExactSpelling:=True)>
Public Shared Function RegisterFormatEnumerator(
    pBC As IntPtr,   ' IBindCtx*
    pEFetc As IntPtr,   ' IEnumFORMATETC*
    reserved As UInteger   ' DWORD
) As Integer
End Function

' pBC : IBindCtx*
' pEFetc : IEnumFORMATETC*
' reserved : DWORD
Declare PtrSafe Function RegisterFormatEnumerator Lib "urlmon" ( _
    ByVal pBC As LongPtr, _
    ByVal pEFetc As LongPtr, _
    ByVal reserved 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

RegisterFormatEnumerator = ctypes.windll.urlmon.RegisterFormatEnumerator
RegisterFormatEnumerator.restype = ctypes.c_int
RegisterFormatEnumerator.argtypes = [
    ctypes.c_void_p,  # pBC : IBindCtx*
    ctypes.c_void_p,  # pEFetc : IEnumFORMATETC*
    wintypes.DWORD,  # reserved : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('urlmon.dll')
RegisterFormatEnumerator = Fiddle::Function.new(
  lib['RegisterFormatEnumerator'],
  [
    Fiddle::TYPE_VOIDP,  # pBC : IBindCtx*
    Fiddle::TYPE_VOIDP,  # pEFetc : IEnumFORMATETC*
    -Fiddle::TYPE_INT,  # reserved : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "urlmon")]
extern "system" {
    fn RegisterFormatEnumerator(
        pBC: *mut core::ffi::c_void,  // IBindCtx*
        pEFetc: *mut core::ffi::c_void,  // IEnumFORMATETC*
        reserved: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("urlmon.dll")]
public static extern int RegisterFormatEnumerator(IntPtr pBC, IntPtr pEFetc, uint reserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'urlmon_RegisterFormatEnumerator' -Namespace Win32 -PassThru
# $api::RegisterFormatEnumerator(pBC, pEFetc, reserved)

#uselib "urlmon.dll"
#func global RegisterFormatEnumerator "RegisterFormatEnumerator" sptr, sptr, sptr
; RegisterFormatEnumerator pBC, pEFetc, reserved   ; 戻り値は stat
; pBC : IBindCtx* -> "sptr"
; pEFetc : IEnumFORMATETC* -> "sptr"
; reserved : DWORD -> "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 RegisterFormatEnumerator "RegisterFormatEnumerator" sptr, sptr, int
; res = RegisterFormatEnumerator(pBC, pEFetc, reserved)
; pBC : IBindCtx* -> "sptr"
; pEFetc : IEnumFORMATETC* -> "sptr"
; reserved : DWORD -> "int"

; HRESULT RegisterFormatEnumerator(IBindCtx* pBC, IEnumFORMATETC* pEFetc, DWORD reserved)
#uselib "urlmon.dll"
#cfunc global RegisterFormatEnumerator "RegisterFormatEnumerator" intptr, intptr, int
; res = RegisterFormatEnumerator(pBC, pEFetc, reserved)
; pBC : IBindCtx* -> "intptr"
; pEFetc : IEnumFORMATETC* -> "intptr"
; reserved : DWORD -> "int"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	urlmon = windows.NewLazySystemDLL("urlmon.dll")
	procRegisterFormatEnumerator = urlmon.NewProc("RegisterFormatEnumerator")
)

// pBC (IBindCtx*), pEFetc (IEnumFORMATETC*), reserved (DWORD)
r1, _, err := procRegisterFormatEnumerator.Call(
	uintptr(pBC),
	uintptr(pEFetc),
	uintptr(reserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function RegisterFormatEnumerator(
  pBC: Pointer;   // IBindCtx*
  pEFetc: Pointer;   // IEnumFORMATETC*
  reserved: DWORD   // DWORD
): Integer; stdcall;
  external 'urlmon.dll' name 'RegisterFormatEnumerator';

result := DllCall("urlmon\RegisterFormatEnumerator"
    , "Ptr", pBC   ; IBindCtx*
    , "Ptr", pEFetc   ; IEnumFORMATETC*
    , "UInt", reserved   ; DWORD
    , "Int")   ; return: HRESULT

●RegisterFormatEnumerator(pBC, pEFetc, reserved) = DLL("urlmon.dll", "int RegisterFormatEnumerator(void*, void*, dword)")
# 呼び出し: RegisterFormatEnumerator(pBC, pEFetc, reserved)
# pBC : IBindCtx* -> "void*"
# pEFetc : IEnumFORMATETC* -> "void*"
# reserved : DWORD -> "dword"
# 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)。