WsReadElement

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

HRESULT WsReadElement(
    WS_XML_READER* reader,
    const WS_ELEMENT_DESCRIPTION* elementDescription,
    WS_READ_OPTION readOption,
    WS_HEAP* heap,   // optional
    void* value,
    DWORD valueSize,
    WS_ERROR* error   // optional
);

<DllImport("webservices.dll", ExactSpelling:=True)>
Public Shared Function WsReadElement(
    ByRef reader As IntPtr,   ' WS_XML_READER*
    elementDescription As IntPtr,   ' WS_ELEMENT_DESCRIPTION*
    readOption As Integer,   ' WS_READ_OPTION
    heap As IntPtr,   ' WS_HEAP* optional
    value As IntPtr,   ' void* out
    valueSize As UInteger,   ' DWORD
    [error] As IntPtr   ' WS_ERROR* optional
) As Integer
End Function

' reader : WS_XML_READER*
' elementDescription : WS_ELEMENT_DESCRIPTION*
' readOption : WS_READ_OPTION
' heap : WS_HEAP* optional
' value : void* out
' valueSize : DWORD
' error : WS_ERROR* optional
Declare PtrSafe Function WsReadElement Lib "webservices" ( _
    ByRef reader As LongPtr, _
    ByVal elementDescription As LongPtr, _
    ByVal readOption As Long, _
    ByVal heap As LongPtr, _
    ByVal value As LongPtr, _
    ByVal valueSize 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

WsReadElement = ctypes.windll.webservices.WsReadElement
WsReadElement.restype = ctypes.c_int
WsReadElement.argtypes = [
    ctypes.c_void_p,  # reader : WS_XML_READER*
    ctypes.c_void_p,  # elementDescription : WS_ELEMENT_DESCRIPTION*
    ctypes.c_int,  # readOption : WS_READ_OPTION
    ctypes.c_void_p,  # heap : WS_HEAP* optional
    ctypes.POINTER(None),  # value : void* out
    wintypes.DWORD,  # valueSize : DWORD
    ctypes.c_void_p,  # error : WS_ERROR* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('webservices.dll')
WsReadElement = Fiddle::Function.new(
  lib['WsReadElement'],
  [
    Fiddle::TYPE_VOIDP,  # reader : WS_XML_READER*
    Fiddle::TYPE_VOIDP,  # elementDescription : WS_ELEMENT_DESCRIPTION*
    Fiddle::TYPE_INT,  # readOption : WS_READ_OPTION
    Fiddle::TYPE_VOIDP,  # heap : WS_HEAP* optional
    Fiddle::TYPE_VOIDP,  # value : void* out
    -Fiddle::TYPE_INT,  # valueSize : DWORD
    Fiddle::TYPE_VOIDP,  # error : WS_ERROR* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "webservices")]
extern "system" {
    fn WsReadElement(
        reader: *mut isize,  // WS_XML_READER*
        elementDescription: *const WS_ELEMENT_DESCRIPTION,  // WS_ELEMENT_DESCRIPTION*
        readOption: i32,  // WS_READ_OPTION
        heap: *mut isize,  // WS_HEAP* optional
        value: *mut (),  // void* out
        valueSize: u32,  // DWORD
        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 WsReadElement(ref IntPtr reader, IntPtr elementDescription, int readOption, IntPtr heap, IntPtr value, uint valueSize, IntPtr error);
"@
$api = Add-Type -MemberDefinition $sig -Name 'webservices_WsReadElement' -Namespace Win32 -PassThru
# $api::WsReadElement(reader, elementDescription, readOption, heap, value, valueSize, error)

#uselib "webservices.dll"
#func global WsReadElement "WsReadElement" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; WsReadElement reader, varptr(elementDescription), readOption, heap, value, valueSize, error   ; 戻り値は stat
; reader : WS_XML_READER* -> "sptr"
; elementDescription : WS_ELEMENT_DESCRIPTION* -> "sptr"
; readOption : WS_READ_OPTION -> "sptr"
; heap : WS_HEAP* optional -> "sptr"
; value : void* out -> "sptr"
; valueSize : DWORD -> "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 WsReadElement "WsReadElement" int, var, int, int, sptr, int, int
; res = WsReadElement(reader, elementDescription, readOption, heap, value, valueSize, error)
; reader : WS_XML_READER* -> "int"
; elementDescription : WS_ELEMENT_DESCRIPTION* -> "var"
; readOption : WS_READ_OPTION -> "int"
; heap : WS_HEAP* optional -> "int"
; value : void* out -> "sptr"
; valueSize : DWORD -> "int"
; 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 WsReadElement(WS_XML_READER* reader, WS_ELEMENT_DESCRIPTION* elementDescription, WS_READ_OPTION readOption, WS_HEAP* heap, void* value, DWORD valueSize, WS_ERROR* error)
#uselib "webservices.dll"
#cfunc global WsReadElement "WsReadElement" int, var, int, int, intptr, int, int
; res = WsReadElement(reader, elementDescription, readOption, heap, value, valueSize, error)
; reader : WS_XML_READER* -> "int"
; elementDescription : WS_ELEMENT_DESCRIPTION* -> "var"
; readOption : WS_READ_OPTION -> "int"
; heap : WS_HEAP* optional -> "int"
; value : void* out -> "intptr"
; valueSize : DWORD -> "int"
; 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")
	procWsReadElement = webservices.NewProc("WsReadElement")
)

// reader (WS_XML_READER*), elementDescription (WS_ELEMENT_DESCRIPTION*), readOption (WS_READ_OPTION), heap (WS_HEAP* optional), value (void* out), valueSize (DWORD), error (WS_ERROR* optional)
r1, _, err := procWsReadElement.Call(
	uintptr(reader),
	uintptr(elementDescription),
	uintptr(readOption),
	uintptr(heap),
	uintptr(value),
	uintptr(valueSize),
	uintptr(error),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WsReadElement(
  reader: Pointer;   // WS_XML_READER*
  elementDescription: Pointer;   // WS_ELEMENT_DESCRIPTION*
  readOption: Integer;   // WS_READ_OPTION
  heap: Pointer;   // WS_HEAP* optional
  value: Pointer;   // void* out
  valueSize: DWORD;   // DWORD
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsReadElement';

result := DllCall("webservices\WsReadElement"
    , "Ptr", reader   ; WS_XML_READER*
    , "Ptr", elementDescription   ; WS_ELEMENT_DESCRIPTION*
    , "Int", readOption   ; WS_READ_OPTION
    , "Ptr", heap   ; WS_HEAP* optional
    , "Ptr", value   ; void* out
    , "UInt", valueSize   ; DWORD
    , "Ptr", error   ; WS_ERROR* optional
    , "Int")   ; return: HRESULT

●WsReadElement(reader, elementDescription, readOption, heap, value, valueSize, error) = DLL("webservices.dll", "int WsReadElement(void*, void*, int, void*, void*, dword, void*)")
# 呼び出し: WsReadElement(reader, elementDescription, readOption, heap, value, valueSize, error)
# reader : WS_XML_READER* -> "void*"
# elementDescription : WS_ELEMENT_DESCRIPTION* -> "void*"
# readOption : WS_READ_OPTION -> "int"
# heap : WS_HEAP* optional -> "void*"
# value : void* out -> "void*"
# valueSize : DWORD -> "dword"
# 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)。