WsWriteMessageStart

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

HRESULT WsWriteMessageStart(
    WS_CHANNEL* channel,
    WS_MESSAGE* message,
    const WS_ASYNC_CONTEXT* asyncContext,   // optional
    WS_ERROR* error   // optional
);

<DllImport("webservices.dll", ExactSpelling:=True)>
Public Shared Function WsWriteMessageStart(
    ByRef channel As IntPtr,   ' WS_CHANNEL*
    ByRef message As IntPtr,   ' WS_MESSAGE*
    asyncContext As IntPtr,   ' WS_ASYNC_CONTEXT* optional
    [error] As IntPtr   ' WS_ERROR* optional
) As Integer
End Function

' channel : WS_CHANNEL*
' message : WS_MESSAGE*
' asyncContext : WS_ASYNC_CONTEXT* optional
' error : WS_ERROR* optional
Declare PtrSafe Function WsWriteMessageStart Lib "webservices" ( _
    ByRef channel As LongPtr, _
    ByRef message As LongPtr, _
    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

WsWriteMessageStart = ctypes.windll.webservices.WsWriteMessageStart
WsWriteMessageStart.restype = ctypes.c_int
WsWriteMessageStart.argtypes = [
    ctypes.c_void_p,  # channel : WS_CHANNEL*
    ctypes.c_void_p,  # message : WS_MESSAGE*
    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')
WsWriteMessageStart = Fiddle::Function.new(
  lib['WsWriteMessageStart'],
  [
    Fiddle::TYPE_VOIDP,  # channel : WS_CHANNEL*
    Fiddle::TYPE_VOIDP,  # message : WS_MESSAGE*
    Fiddle::TYPE_VOIDP,  # asyncContext : WS_ASYNC_CONTEXT* optional
    Fiddle::TYPE_VOIDP,  # error : WS_ERROR* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "webservices")]
extern "system" {
    fn WsWriteMessageStart(
        channel: *mut isize,  // WS_CHANNEL*
        message: *mut isize,  // WS_MESSAGE*
        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 WsWriteMessageStart(ref IntPtr channel, ref IntPtr message, IntPtr asyncContext, IntPtr error);
"@
$api = Add-Type -MemberDefinition $sig -Name 'webservices_WsWriteMessageStart' -Namespace Win32 -PassThru
# $api::WsWriteMessageStart(channel, message, asyncContext, error)

#uselib "webservices.dll"
#func global WsWriteMessageStart "WsWriteMessageStart" sptr, sptr, sptr, sptr
; WsWriteMessageStart channel, message, varptr(asyncContext), error   ; 戻り値は stat
; channel : WS_CHANNEL* -> "sptr"
; message : WS_MESSAGE* -> "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 WsWriteMessageStart "WsWriteMessageStart" int, int, var, int
; res = WsWriteMessageStart(channel, message, asyncContext, error)
; channel : WS_CHANNEL* -> "int"
; message : WS_MESSAGE* -> "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 WsWriteMessageStart(WS_CHANNEL* channel, WS_MESSAGE* message, WS_ASYNC_CONTEXT* asyncContext, WS_ERROR* error)
#uselib "webservices.dll"
#cfunc global WsWriteMessageStart "WsWriteMessageStart" int, int, var, int
; res = WsWriteMessageStart(channel, message, asyncContext, error)
; channel : WS_CHANNEL* -> "int"
; message : WS_MESSAGE* -> "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")
	procWsWriteMessageStart = webservices.NewProc("WsWriteMessageStart")
)

// channel (WS_CHANNEL*), message (WS_MESSAGE*), asyncContext (WS_ASYNC_CONTEXT* optional), error (WS_ERROR* optional)
r1, _, err := procWsWriteMessageStart.Call(
	uintptr(channel),
	uintptr(message),
	uintptr(asyncContext),
	uintptr(error),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WsWriteMessageStart(
  channel: Pointer;   // WS_CHANNEL*
  message: Pointer;   // WS_MESSAGE*
  asyncContext: Pointer;   // WS_ASYNC_CONTEXT* optional
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsWriteMessageStart';

result := DllCall("webservices\WsWriteMessageStart"
    , "Ptr", channel   ; WS_CHANNEL*
    , "Ptr", message   ; WS_MESSAGE*
    , "Ptr", asyncContext   ; WS_ASYNC_CONTEXT* optional
    , "Ptr", error   ; WS_ERROR* optional
    , "Int")   ; return: HRESULT

●WsWriteMessageStart(channel, message, asyncContext, error) = DLL("webservices.dll", "int WsWriteMessageStart(void*, void*, void*, void*)")
# 呼び出し: WsWriteMessageStart(channel, message, asyncContext, error)
# channel : WS_CHANNEL* -> "void*"
# message : WS_MESSAGE* -> "void*"
# 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)。