WsReadMetadata

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

HRESULT WsReadMetadata(
    WS_METADATA* metadata,
    WS_XML_READER* reader,
    const WS_STRING* url,
    WS_ERROR* error   // optional
);

<DllImport("webservices.dll", ExactSpelling:=True)>
Public Shared Function WsReadMetadata(
    ByRef metadata As IntPtr,   ' WS_METADATA*
    ByRef reader As IntPtr,   ' WS_XML_READER*
    url As IntPtr,   ' WS_STRING*
    [error] As IntPtr   ' WS_ERROR* optional
) As Integer
End Function

' metadata : WS_METADATA*
' reader : WS_XML_READER*
' url : WS_STRING*
' error : WS_ERROR* optional
Declare PtrSafe Function WsReadMetadata Lib "webservices" ( _
    ByRef metadata As LongPtr, _
    ByRef reader As LongPtr, _
    ByVal url 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

WsReadMetadata = ctypes.windll.webservices.WsReadMetadata
WsReadMetadata.restype = ctypes.c_int
WsReadMetadata.argtypes = [
    ctypes.c_void_p,  # metadata : WS_METADATA*
    ctypes.c_void_p,  # reader : WS_XML_READER*
    ctypes.c_void_p,  # url : WS_STRING*
    ctypes.c_void_p,  # error : WS_ERROR* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('webservices.dll')
WsReadMetadata = Fiddle::Function.new(
  lib['WsReadMetadata'],
  [
    Fiddle::TYPE_VOIDP,  # metadata : WS_METADATA*
    Fiddle::TYPE_VOIDP,  # reader : WS_XML_READER*
    Fiddle::TYPE_VOIDP,  # url : WS_STRING*
    Fiddle::TYPE_VOIDP,  # error : WS_ERROR* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "webservices")]
extern "system" {
    fn WsReadMetadata(
        metadata: *mut isize,  // WS_METADATA*
        reader: *mut isize,  // WS_XML_READER*
        url: *const WS_STRING,  // WS_STRING*
        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 WsReadMetadata(ref IntPtr metadata, ref IntPtr reader, IntPtr url, IntPtr error);
"@
$api = Add-Type -MemberDefinition $sig -Name 'webservices_WsReadMetadata' -Namespace Win32 -PassThru
# $api::WsReadMetadata(metadata, reader, url, error)

#uselib "webservices.dll"
#func global WsReadMetadata "WsReadMetadata" sptr, sptr, sptr, sptr
; WsReadMetadata metadata, reader, varptr(url), error   ; 戻り値は stat
; metadata : WS_METADATA* -> "sptr"
; reader : WS_XML_READER* -> "sptr"
; url : WS_STRING* -> "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 WsReadMetadata "WsReadMetadata" int, int, var, int
; res = WsReadMetadata(metadata, reader, url, error)
; metadata : WS_METADATA* -> "int"
; reader : WS_XML_READER* -> "int"
; url : WS_STRING* -> "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 WsReadMetadata(WS_METADATA* metadata, WS_XML_READER* reader, WS_STRING* url, WS_ERROR* error)
#uselib "webservices.dll"
#cfunc global WsReadMetadata "WsReadMetadata" int, int, var, int
; res = WsReadMetadata(metadata, reader, url, error)
; metadata : WS_METADATA* -> "int"
; reader : WS_XML_READER* -> "int"
; url : WS_STRING* -> "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")
	procWsReadMetadata = webservices.NewProc("WsReadMetadata")
)

// metadata (WS_METADATA*), reader (WS_XML_READER*), url (WS_STRING*), error (WS_ERROR* optional)
r1, _, err := procWsReadMetadata.Call(
	uintptr(metadata),
	uintptr(reader),
	uintptr(url),
	uintptr(error),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WsReadMetadata(
  metadata: Pointer;   // WS_METADATA*
  reader: Pointer;   // WS_XML_READER*
  url: Pointer;   // WS_STRING*
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsReadMetadata';

result := DllCall("webservices\WsReadMetadata"
    , "Ptr", metadata   ; WS_METADATA*
    , "Ptr", reader   ; WS_XML_READER*
    , "Ptr", url   ; WS_STRING*
    , "Ptr", error   ; WS_ERROR* optional
    , "Int")   ; return: HRESULT

●WsReadMetadata(metadata, reader, url, error) = DLL("webservices.dll", "int WsReadMetadata(void*, void*, void*, void*)")
# 呼び出し: WsReadMetadata(metadata, reader, url, error)
# metadata : WS_METADATA* -> "void*"
# reader : WS_XML_READER* -> "void*"
# url : WS_STRING* -> "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)。