WsPullBytes

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

HRESULT WsPullBytes(
    WS_XML_WRITER* writer,
    WS_PULL_BYTES_CALLBACK callback,
    void* callbackState,   // optional
    WS_ERROR* error   // optional
);

<DllImport("webservices.dll", ExactSpelling:=True)>
Public Shared Function WsPullBytes(
    ByRef writer As IntPtr,   ' WS_XML_WRITER*
    callback As IntPtr,   ' WS_PULL_BYTES_CALLBACK
    callbackState As IntPtr,   ' void* optional
    [error] As IntPtr   ' WS_ERROR* optional
) As Integer
End Function

' writer : WS_XML_WRITER*
' callback : WS_PULL_BYTES_CALLBACK
' callbackState : void* optional
' error : WS_ERROR* optional
Declare PtrSafe Function WsPullBytes Lib "webservices" ( _
    ByRef writer As LongPtr, _
    ByVal callback As LongPtr, _
    ByVal callbackState As LongPtr, _
    ByVal error 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

WsPullBytes = ctypes.windll.webservices.WsPullBytes
WsPullBytes.restype = ctypes.c_int
WsPullBytes.argtypes = [
    ctypes.c_void_p,  # writer : WS_XML_WRITER*
    ctypes.c_void_p,  # callback : WS_PULL_BYTES_CALLBACK
    ctypes.POINTER(None),  # callbackState : void* optional
    ctypes.c_void_p,  # error : WS_ERROR* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('webservices.dll')
WsPullBytes = Fiddle::Function.new(
  lib['WsPullBytes'],
  [
    Fiddle::TYPE_VOIDP,  # writer : WS_XML_WRITER*
    Fiddle::TYPE_VOIDP,  # callback : WS_PULL_BYTES_CALLBACK
    Fiddle::TYPE_VOIDP,  # callbackState : void* optional
    Fiddle::TYPE_VOIDP,  # error : WS_ERROR* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "webservices")]
extern "system" {
    fn WsPullBytes(
        writer: *mut isize,  // WS_XML_WRITER*
        callback: *const core::ffi::c_void,  // WS_PULL_BYTES_CALLBACK
        callbackState: *mut (),  // void* optional
        error: *mut isize  // WS_ERROR* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("webservices.dll")]
public static extern int WsPullBytes(ref IntPtr writer, IntPtr callback, IntPtr callbackState, IntPtr error);
"@
$api = Add-Type -MemberDefinition $sig -Name 'webservices_WsPullBytes' -Namespace Win32 -PassThru
# $api::WsPullBytes(writer, callback, callbackState, error)

#uselib "webservices.dll"
#func global WsPullBytes "WsPullBytes" sptr, sptr, sptr, sptr
; WsPullBytes writer, callback, callbackState, error   ; 戻り値は stat
; writer : WS_XML_WRITER* -> "sptr"
; callback : WS_PULL_BYTES_CALLBACK -> "sptr"
; callbackState : void* optional -> "sptr"
; error : WS_ERROR* optional -> "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 "webservices.dll"
#cfunc global WsPullBytes "WsPullBytes" int, sptr, sptr, int
; res = WsPullBytes(writer, callback, callbackState, error)
; writer : WS_XML_WRITER* -> "int"
; callback : WS_PULL_BYTES_CALLBACK -> "sptr"
; callbackState : void* optional -> "sptr"
; error : WS_ERROR* optional -> "int"

; HRESULT WsPullBytes(WS_XML_WRITER* writer, WS_PULL_BYTES_CALLBACK callback, void* callbackState, WS_ERROR* error)
#uselib "webservices.dll"
#cfunc global WsPullBytes "WsPullBytes" int, intptr, intptr, int
; res = WsPullBytes(writer, callback, callbackState, error)
; writer : WS_XML_WRITER* -> "int"
; callback : WS_PULL_BYTES_CALLBACK -> "intptr"
; callbackState : void* optional -> "intptr"
; error : WS_ERROR* optional -> "int"

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

var (
	webservices = windows.NewLazySystemDLL("webservices.dll")
	procWsPullBytes = webservices.NewProc("WsPullBytes")
)

// writer (WS_XML_WRITER*), callback (WS_PULL_BYTES_CALLBACK), callbackState (void* optional), error (WS_ERROR* optional)
r1, _, err := procWsPullBytes.Call(
	uintptr(writer),
	uintptr(callback),
	uintptr(callbackState),
	uintptr(error),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WsPullBytes(
  writer: Pointer;   // WS_XML_WRITER*
  callback: Pointer;   // WS_PULL_BYTES_CALLBACK
  callbackState: Pointer;   // void* optional
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsPullBytes';

result := DllCall("webservices\WsPullBytes"
    , "Ptr", writer   ; WS_XML_WRITER*
    , "Ptr", callback   ; WS_PULL_BYTES_CALLBACK
    , "Ptr", callbackState   ; void* optional
    , "Ptr", error   ; WS_ERROR* optional
    , "Int")   ; return: HRESULT

●WsPullBytes(writer, callback, callbackState, error) = DLL("webservices.dll", "int WsPullBytes(void*, void*, void*, void*)")
# 呼び出し: WsPullBytes(writer, callback, callbackState, error)
# writer : WS_XML_WRITER* -> "void*"
# callback : WS_PULL_BYTES_CALLBACK -> "void*"
# callbackState : void* optional -> "void*"
# error : WS_ERROR* optional -> "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)。