WsGetXmlAttribute

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

HRESULT WsGetXmlAttribute(
    WS_XML_READER* reader,
    const WS_XML_STRING* localName,
    WS_HEAP* heap,
    WORD** valueChars,   // optional
    DWORD* valueCharCount,
    WS_ERROR* error   // optional
);

<DllImport("webservices.dll", ExactSpelling:=True)>
Public Shared Function WsGetXmlAttribute(
    ByRef reader As IntPtr,   ' WS_XML_READER*
    localName As IntPtr,   ' WS_XML_STRING*
    ByRef heap As IntPtr,   ' WS_HEAP*
    valueChars As IntPtr,   ' WORD** optional, out
    <Out> ByRef valueCharCount As UInteger,   ' DWORD* out
    [error] As IntPtr   ' WS_ERROR* optional
) As Integer
End Function

' reader : WS_XML_READER*
' localName : WS_XML_STRING*
' heap : WS_HEAP*
' valueChars : WORD** optional, out
' valueCharCount : DWORD* out
' error : WS_ERROR* optional
Declare PtrSafe Function WsGetXmlAttribute Lib "webservices" ( _
    ByRef reader As LongPtr, _
    ByVal localName As LongPtr, _
    ByRef heap As LongPtr, _
    ByVal valueChars As LongPtr, _
    ByRef valueCharCount As Long, _
    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

WsGetXmlAttribute = ctypes.windll.webservices.WsGetXmlAttribute
WsGetXmlAttribute.restype = ctypes.c_int
WsGetXmlAttribute.argtypes = [
    ctypes.c_void_p,  # reader : WS_XML_READER*
    ctypes.c_void_p,  # localName : WS_XML_STRING*
    ctypes.c_void_p,  # heap : WS_HEAP*
    ctypes.c_void_p,  # valueChars : WORD** optional, out
    ctypes.POINTER(wintypes.DWORD),  # valueCharCount : DWORD* out
    ctypes.c_void_p,  # error : WS_ERROR* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('webservices.dll')
WsGetXmlAttribute = Fiddle::Function.new(
  lib['WsGetXmlAttribute'],
  [
    Fiddle::TYPE_VOIDP,  # reader : WS_XML_READER*
    Fiddle::TYPE_VOIDP,  # localName : WS_XML_STRING*
    Fiddle::TYPE_VOIDP,  # heap : WS_HEAP*
    Fiddle::TYPE_VOIDP,  # valueChars : WORD** optional, out
    Fiddle::TYPE_VOIDP,  # valueCharCount : DWORD* out
    Fiddle::TYPE_VOIDP,  # error : WS_ERROR* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "webservices")]
extern "system" {
    fn WsGetXmlAttribute(
        reader: *mut isize,  // WS_XML_READER*
        localName: *const WS_XML_STRING,  // WS_XML_STRING*
        heap: *mut isize,  // WS_HEAP*
        valueChars: *mut *mut u16,  // WORD** optional, out
        valueCharCount: *mut u32,  // DWORD* out
        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 WsGetXmlAttribute(ref IntPtr reader, IntPtr localName, ref IntPtr heap, IntPtr valueChars, out uint valueCharCount, IntPtr error);
"@
$api = Add-Type -MemberDefinition $sig -Name 'webservices_WsGetXmlAttribute' -Namespace Win32 -PassThru
# $api::WsGetXmlAttribute(reader, localName, heap, valueChars, valueCharCount, error)

#uselib "webservices.dll"
#func global WsGetXmlAttribute "WsGetXmlAttribute" sptr, sptr, sptr, sptr, sptr, sptr
; WsGetXmlAttribute reader, varptr(localName), heap, varptr(valueChars), varptr(valueCharCount), error   ; 戻り値は stat
; reader : WS_XML_READER* -> "sptr"
; localName : WS_XML_STRING* -> "sptr"
; heap : WS_HEAP* -> "sptr"
; valueChars : WORD** optional, out -> "sptr"
; valueCharCount : DWORD* out -> "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 WsGetXmlAttribute "WsGetXmlAttribute" int, var, int, var, var, int
; res = WsGetXmlAttribute(reader, localName, heap, valueChars, valueCharCount, error)
; reader : WS_XML_READER* -> "int"
; localName : WS_XML_STRING* -> "var"
; heap : WS_HEAP* -> "int"
; valueChars : WORD** optional, out -> "var"
; valueCharCount : DWORD* out -> "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 WsGetXmlAttribute(WS_XML_READER* reader, WS_XML_STRING* localName, WS_HEAP* heap, WORD** valueChars, DWORD* valueCharCount, WS_ERROR* error)
#uselib "webservices.dll"
#cfunc global WsGetXmlAttribute "WsGetXmlAttribute" int, var, int, var, var, int
; res = WsGetXmlAttribute(reader, localName, heap, valueChars, valueCharCount, error)
; reader : WS_XML_READER* -> "int"
; localName : WS_XML_STRING* -> "var"
; heap : WS_HEAP* -> "int"
; valueChars : WORD** optional, out -> "var"
; valueCharCount : DWORD* out -> "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")
	procWsGetXmlAttribute = webservices.NewProc("WsGetXmlAttribute")
)

// reader (WS_XML_READER*), localName (WS_XML_STRING*), heap (WS_HEAP*), valueChars (WORD** optional, out), valueCharCount (DWORD* out), error (WS_ERROR* optional)
r1, _, err := procWsGetXmlAttribute.Call(
	uintptr(reader),
	uintptr(localName),
	uintptr(heap),
	uintptr(valueChars),
	uintptr(valueCharCount),
	uintptr(error),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WsGetXmlAttribute(
  reader: Pointer;   // WS_XML_READER*
  localName: Pointer;   // WS_XML_STRING*
  heap: Pointer;   // WS_HEAP*
  valueChars: Pointer;   // WORD** optional, out
  valueCharCount: Pointer;   // DWORD* out
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsGetXmlAttribute';

result := DllCall("webservices\WsGetXmlAttribute"
    , "Ptr", reader   ; WS_XML_READER*
    , "Ptr", localName   ; WS_XML_STRING*
    , "Ptr", heap   ; WS_HEAP*
    , "Ptr", valueChars   ; WORD** optional, out
    , "Ptr", valueCharCount   ; DWORD* out
    , "Ptr", error   ; WS_ERROR* optional
    , "Int")   ; return: HRESULT

●WsGetXmlAttribute(reader, localName, heap, valueChars, valueCharCount, error) = DLL("webservices.dll", "int WsGetXmlAttribute(void*, void*, void*, void*, void*, void*)")
# 呼び出し: WsGetXmlAttribute(reader, localName, heap, valueChars, valueCharCount, error)
# reader : WS_XML_READER* -> "void*"
# localName : WS_XML_STRING* -> "void*"
# heap : WS_HEAP* -> "void*"
# valueChars : WORD** optional, out -> "void*"
# valueCharCount : DWORD* out -> "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)。