WsFillReader

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

HRESULT WsFillReader(
    WS_XML_READER* reader,
    DWORD minSize,
    const WS_ASYNC_CONTEXT* asyncContext,   // optional
    WS_ERROR* error   // optional
);

<DllImport("webservices.dll", ExactSpelling:=True)>
Public Shared Function WsFillReader(
    ByRef reader As IntPtr,   ' WS_XML_READER*
    minSize As UInteger,   ' DWORD
    asyncContext As IntPtr,   ' WS_ASYNC_CONTEXT* optional
    [error] As IntPtr   ' WS_ERROR* optional
) As Integer
End Function

' reader : WS_XML_READER*
' minSize : DWORD
' asyncContext : WS_ASYNC_CONTEXT* optional
' error : WS_ERROR* optional
Declare PtrSafe Function WsFillReader Lib "webservices" ( _
    ByRef reader As LongPtr, _
    ByVal minSize As Long, _
    ByVal asyncContext 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

WsFillReader = ctypes.windll.webservices.WsFillReader
WsFillReader.restype = ctypes.c_int
WsFillReader.argtypes = [
    ctypes.c_void_p,  # reader : WS_XML_READER*
    wintypes.DWORD,  # minSize : DWORD
    ctypes.c_void_p,  # asyncContext : WS_ASYNC_CONTEXT* optional
    ctypes.c_void_p,  # error : WS_ERROR* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('webservices.dll')
WsFillReader = Fiddle::Function.new(
  lib['WsFillReader'],
  [
    Fiddle::TYPE_VOIDP,  # reader : WS_XML_READER*
    -Fiddle::TYPE_INT,  # minSize : DWORD
    Fiddle::TYPE_VOIDP,  # asyncContext : WS_ASYNC_CONTEXT* optional
    Fiddle::TYPE_VOIDP,  # error : WS_ERROR* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "webservices")]
extern "system" {
    fn WsFillReader(
        reader: *mut isize,  // WS_XML_READER*
        minSize: u32,  // DWORD
        asyncContext: *const WS_ASYNC_CONTEXT,  // WS_ASYNC_CONTEXT* 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 WsFillReader(ref IntPtr reader, uint minSize, IntPtr asyncContext, IntPtr error);
"@
$api = Add-Type -MemberDefinition $sig -Name 'webservices_WsFillReader' -Namespace Win32 -PassThru
# $api::WsFillReader(reader, minSize, asyncContext, error)

#uselib "webservices.dll"
#func global WsFillReader "WsFillReader" sptr, sptr, sptr, sptr
; WsFillReader reader, minSize, varptr(asyncContext), error   ; 戻り値は stat
; reader : WS_XML_READER* -> "sptr"
; minSize : DWORD -> "sptr"
; asyncContext : WS_ASYNC_CONTEXT* 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 WsFillReader "WsFillReader" int, int, var, int
; res = WsFillReader(reader, minSize, asyncContext, error)
; reader : WS_XML_READER* -> "int"
; minSize : DWORD -> "int"
; asyncContext : WS_ASYNC_CONTEXT* optional -> "var"
; error : WS_ERROR* optional -> "int"
; ※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 WsFillReader(WS_XML_READER* reader, DWORD minSize, WS_ASYNC_CONTEXT* asyncContext, WS_ERROR* error)
#uselib "webservices.dll"
#cfunc global WsFillReader "WsFillReader" int, int, var, int
; res = WsFillReader(reader, minSize, asyncContext, error)
; reader : WS_XML_READER* -> "int"
; minSize : DWORD -> "int"
; asyncContext : WS_ASYNC_CONTEXT* optional -> "var"
; error : WS_ERROR* optional -> "int"
; ※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 (
	webservices = windows.NewLazySystemDLL("webservices.dll")
	procWsFillReader = webservices.NewProc("WsFillReader")
)

// reader (WS_XML_READER*), minSize (DWORD), asyncContext (WS_ASYNC_CONTEXT* optional), error (WS_ERROR* optional)
r1, _, err := procWsFillReader.Call(
	uintptr(reader),
	uintptr(minSize),
	uintptr(asyncContext),
	uintptr(error),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WsFillReader(
  reader: Pointer;   // WS_XML_READER*
  minSize: DWORD;   // DWORD
  asyncContext: Pointer;   // WS_ASYNC_CONTEXT* optional
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsFillReader';

result := DllCall("webservices\WsFillReader"
    , "Ptr", reader   ; WS_XML_READER*
    , "UInt", minSize   ; DWORD
    , "Ptr", asyncContext   ; WS_ASYNC_CONTEXT* optional
    , "Ptr", error   ; WS_ERROR* optional
    , "Int")   ; return: HRESULT

●WsFillReader(reader, minSize, asyncContext, error) = DLL("webservices.dll", "int WsFillReader(void*, dword, void*, void*)")
# 呼び出し: WsFillReader(reader, minSize, asyncContext, error)
# reader : WS_XML_READER* -> "void*"
# minSize : DWORD -> "dword"
# asyncContext : WS_ASYNC_CONTEXT* 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)。