CreateAsyncBindCtx

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

HRESULT CreateAsyncBindCtx(
    DWORD reserved,
    IBindStatusCallback* pBSCb,
    IEnumFORMATETC* pEFetc,   // optional
    IBindCtx** ppBC
);

<DllImport("urlmon.dll", ExactSpelling:=True)>
Public Shared Function CreateAsyncBindCtx(
    reserved As UInteger,   ' DWORD
    pBSCb As IntPtr,   ' IBindStatusCallback*
    pEFetc As IntPtr,   ' IEnumFORMATETC* optional
    ppBC As IntPtr   ' IBindCtx** out
) As Integer
End Function

' reserved : DWORD
' pBSCb : IBindStatusCallback*
' pEFetc : IEnumFORMATETC* optional
' ppBC : IBindCtx** out
Declare PtrSafe Function CreateAsyncBindCtx Lib "urlmon" ( _
    ByVal reserved As Long, _
    ByVal pBSCb As LongPtr, _
    ByVal pEFetc As LongPtr, _
    ByVal ppBC 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

CreateAsyncBindCtx = ctypes.windll.urlmon.CreateAsyncBindCtx
CreateAsyncBindCtx.restype = ctypes.c_int
CreateAsyncBindCtx.argtypes = [
    wintypes.DWORD,  # reserved : DWORD
    ctypes.c_void_p,  # pBSCb : IBindStatusCallback*
    ctypes.c_void_p,  # pEFetc : IEnumFORMATETC* optional
    ctypes.c_void_p,  # ppBC : IBindCtx** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('urlmon.dll')
CreateAsyncBindCtx = Fiddle::Function.new(
  lib['CreateAsyncBindCtx'],
  [
    -Fiddle::TYPE_INT,  # reserved : DWORD
    Fiddle::TYPE_VOIDP,  # pBSCb : IBindStatusCallback*
    Fiddle::TYPE_VOIDP,  # pEFetc : IEnumFORMATETC* optional
    Fiddle::TYPE_VOIDP,  # ppBC : IBindCtx** out
  ],
  Fiddle::TYPE_INT)

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

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

#uselib "urlmon.dll"
#func global CreateAsyncBindCtx "CreateAsyncBindCtx" sptr, sptr, sptr, sptr
; CreateAsyncBindCtx reserved, pBSCb, pEFetc, ppBC   ; 戻り値は stat
; reserved : DWORD -> "sptr"
; pBSCb : IBindStatusCallback* -> "sptr"
; pEFetc : IEnumFORMATETC* optional -> "sptr"
; ppBC : IBindCtx** 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 CreateAsyncBindCtx "CreateAsyncBindCtx" int, sptr, sptr, sptr
; res = CreateAsyncBindCtx(reserved, pBSCb, pEFetc, ppBC)
; reserved : DWORD -> "int"
; pBSCb : IBindStatusCallback* -> "sptr"
; pEFetc : IEnumFORMATETC* optional -> "sptr"
; ppBC : IBindCtx** out -> "sptr"

; HRESULT CreateAsyncBindCtx(DWORD reserved, IBindStatusCallback* pBSCb, IEnumFORMATETC* pEFetc, IBindCtx** ppBC)
#uselib "urlmon.dll"
#cfunc global CreateAsyncBindCtx "CreateAsyncBindCtx" int, intptr, intptr, intptr
; res = CreateAsyncBindCtx(reserved, pBSCb, pEFetc, ppBC)
; reserved : DWORD -> "int"
; pBSCb : IBindStatusCallback* -> "intptr"
; pEFetc : IEnumFORMATETC* optional -> "intptr"
; ppBC : IBindCtx** out -> "intptr"

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

var (
	urlmon = windows.NewLazySystemDLL("urlmon.dll")
	procCreateAsyncBindCtx = urlmon.NewProc("CreateAsyncBindCtx")
)

// reserved (DWORD), pBSCb (IBindStatusCallback*), pEFetc (IEnumFORMATETC* optional), ppBC (IBindCtx** out)
r1, _, err := procCreateAsyncBindCtx.Call(
	uintptr(reserved),
	uintptr(pBSCb),
	uintptr(pEFetc),
	uintptr(ppBC),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CreateAsyncBindCtx(
  reserved: DWORD;   // DWORD
  pBSCb: Pointer;   // IBindStatusCallback*
  pEFetc: Pointer;   // IEnumFORMATETC* optional
  ppBC: Pointer   // IBindCtx** out
): Integer; stdcall;
  external 'urlmon.dll' name 'CreateAsyncBindCtx';

result := DllCall("urlmon\CreateAsyncBindCtx"
    , "UInt", reserved   ; DWORD
    , "Ptr", pBSCb   ; IBindStatusCallback*
    , "Ptr", pEFetc   ; IEnumFORMATETC* optional
    , "Ptr", ppBC   ; IBindCtx** out
    , "Int")   ; return: HRESULT

●CreateAsyncBindCtx(reserved, pBSCb, pEFetc, ppBC) = DLL("urlmon.dll", "int CreateAsyncBindCtx(dword, void*, void*, void*)")
# 呼び出し: CreateAsyncBindCtx(reserved, pBSCb, pEFetc, ppBC)
# reserved : DWORD -> "dword"
# pBSCb : IBindStatusCallback* -> "void*"
# pEFetc : IEnumFORMATETC* optional -> "void*"
# ppBC : IBindCtx** 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)。