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CreatePrintAsyncNotifyChannel

関数
印刷の非同期通知チャネルを作成する。
DLLwinspool.drv呼出規約winapi対応OSWindows Vista 以降

シグネチャ

// winspool.drv
#include <windows.h>

HRESULT CreatePrintAsyncNotifyChannel(
    LPCWSTR pszName,   // optional
    GUID* pNotificationType,
    PrintAsyncNotifyUserFilter eUserFilter,
    PrintAsyncNotifyConversationStyle eConversationStyle,
    IPrintAsyncNotifyCallback* pCallback,   // optional
    IPrintAsyncNotifyChannel** ppIAsynchNotification
);

パラメーター

名前方向説明
pszNameLPCWSTRinoptional通知チャネルを作成する対象のプリンタ名を示す文字列(Unicode)。
pNotificationTypeGUID*in送受信する通知種別を識別するGUIDへのポインタ。
eUserFilterPrintAsyncNotifyUserFilterin通知対象ユーザーを絞るPrintAsyncNotifyUserFilter列挙値。
eConversationStylePrintAsyncNotifyConversationStylein双方向か一方向かを示すPrintAsyncNotifyConversationStyle列挙値。
pCallbackIPrintAsyncNotifyCallback*inoptional通知受信時に呼ばれるIPrintAsyncNotifyCallbackインターフェース。
ppIAsynchNotificationIPrintAsyncNotifyChannel**out生成された通知チャネルIPrintAsyncNotifyChannelを受け取るポインタ。

戻り値の型: HRESULT

各言語での呼び出し定義

// winspool.drv
#include <windows.h>

HRESULT CreatePrintAsyncNotifyChannel(
    LPCWSTR pszName,   // optional
    GUID* pNotificationType,
    PrintAsyncNotifyUserFilter eUserFilter,
    PrintAsyncNotifyConversationStyle eConversationStyle,
    IPrintAsyncNotifyCallback* pCallback,   // optional
    IPrintAsyncNotifyChannel** ppIAsynchNotification
);
[DllImport("winspool.drv", ExactSpelling = true)]
static extern int CreatePrintAsyncNotifyChannel(
    [MarshalAs(UnmanagedType.LPWStr)] string pszName,   // LPCWSTR optional
    ref Guid pNotificationType,   // GUID*
    int eUserFilter,   // PrintAsyncNotifyUserFilter
    int eConversationStyle,   // PrintAsyncNotifyConversationStyle
    IntPtr pCallback,   // IPrintAsyncNotifyCallback* optional
    IntPtr ppIAsynchNotification   // IPrintAsyncNotifyChannel** out
);
<DllImport("winspool.drv", ExactSpelling:=True)>
Public Shared Function CreatePrintAsyncNotifyChannel(
    <MarshalAs(UnmanagedType.LPWStr)> pszName As String,   ' LPCWSTR optional
    ByRef pNotificationType As Guid,   ' GUID*
    eUserFilter As Integer,   ' PrintAsyncNotifyUserFilter
    eConversationStyle As Integer,   ' PrintAsyncNotifyConversationStyle
    pCallback As IntPtr,   ' IPrintAsyncNotifyCallback* optional
    ppIAsynchNotification As IntPtr   ' IPrintAsyncNotifyChannel** out
) As Integer
End Function
' pszName : LPCWSTR optional
' pNotificationType : GUID*
' eUserFilter : PrintAsyncNotifyUserFilter
' eConversationStyle : PrintAsyncNotifyConversationStyle
' pCallback : IPrintAsyncNotifyCallback* optional
' ppIAsynchNotification : IPrintAsyncNotifyChannel** out
Declare PtrSafe Function CreatePrintAsyncNotifyChannel Lib "winspool.drv" ( _
    ByVal pszName As LongPtr, _
    ByVal pNotificationType As LongPtr, _
    ByVal eUserFilter As Long, _
    ByVal eConversationStyle As Long, _
    ByVal pCallback As LongPtr, _
    ByVal ppIAsynchNotification 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

CreatePrintAsyncNotifyChannel = ctypes.windll.LoadLibrary("winspool.drv").CreatePrintAsyncNotifyChannel
CreatePrintAsyncNotifyChannel.restype = ctypes.c_int
CreatePrintAsyncNotifyChannel.argtypes = [
    wintypes.LPCWSTR,  # pszName : LPCWSTR optional
    ctypes.c_void_p,  # pNotificationType : GUID*
    ctypes.c_int,  # eUserFilter : PrintAsyncNotifyUserFilter
    ctypes.c_int,  # eConversationStyle : PrintAsyncNotifyConversationStyle
    ctypes.c_void_p,  # pCallback : IPrintAsyncNotifyCallback* optional
    ctypes.c_void_p,  # ppIAsynchNotification : IPrintAsyncNotifyChannel** out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
CreatePrintAsyncNotifyChannel = Fiddle::Function.new(
  lib['CreatePrintAsyncNotifyChannel'],
  [
    Fiddle::TYPE_VOIDP,  # pszName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pNotificationType : GUID*
    Fiddle::TYPE_INT,  # eUserFilter : PrintAsyncNotifyUserFilter
    Fiddle::TYPE_INT,  # eConversationStyle : PrintAsyncNotifyConversationStyle
    Fiddle::TYPE_VOIDP,  # pCallback : IPrintAsyncNotifyCallback* optional
    Fiddle::TYPE_VOIDP,  # ppIAsynchNotification : IPrintAsyncNotifyChannel** out
  ],
  Fiddle::TYPE_INT)
#[link(name = "winspool.drv")]
extern "system" {
    fn CreatePrintAsyncNotifyChannel(
        pszName: *const u16,  // LPCWSTR optional
        pNotificationType: *mut GUID,  // GUID*
        eUserFilter: i32,  // PrintAsyncNotifyUserFilter
        eConversationStyle: i32,  // PrintAsyncNotifyConversationStyle
        pCallback: *mut core::ffi::c_void,  // IPrintAsyncNotifyCallback* optional
        ppIAsynchNotification: *mut *mut core::ffi::c_void  // IPrintAsyncNotifyChannel** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("winspool.drv")]
public static extern int CreatePrintAsyncNotifyChannel([MarshalAs(UnmanagedType.LPWStr)] string pszName, ref Guid pNotificationType, int eUserFilter, int eConversationStyle, IntPtr pCallback, IntPtr ppIAsynchNotification);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_CreatePrintAsyncNotifyChannel' -Namespace Win32 -PassThru
# $api::CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification)
#uselib "winspool.drv"
#func global CreatePrintAsyncNotifyChannel "CreatePrintAsyncNotifyChannel" sptr, sptr, sptr, sptr, sptr, sptr
; CreatePrintAsyncNotifyChannel pszName, varptr(pNotificationType), eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification   ; 戻り値は stat
; pszName : LPCWSTR optional -> "sptr"
; pNotificationType : GUID* -> "sptr"
; eUserFilter : PrintAsyncNotifyUserFilter -> "sptr"
; eConversationStyle : PrintAsyncNotifyConversationStyle -> "sptr"
; pCallback : IPrintAsyncNotifyCallback* optional -> "sptr"
; ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> "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。
出力引数:
#uselib "winspool.drv"
#cfunc global CreatePrintAsyncNotifyChannel "CreatePrintAsyncNotifyChannel" wstr, var, int, int, sptr, sptr
; res = CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification)
; pszName : LPCWSTR optional -> "wstr"
; pNotificationType : GUID* -> "var"
; eUserFilter : PrintAsyncNotifyUserFilter -> "int"
; eConversationStyle : PrintAsyncNotifyConversationStyle -> "int"
; pCallback : IPrintAsyncNotifyCallback* optional -> "sptr"
; ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> "sptr"
; ※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。
出力引数:
; HRESULT CreatePrintAsyncNotifyChannel(LPCWSTR pszName, GUID* pNotificationType, PrintAsyncNotifyUserFilter eUserFilter, PrintAsyncNotifyConversationStyle eConversationStyle, IPrintAsyncNotifyCallback* pCallback, IPrintAsyncNotifyChannel** ppIAsynchNotification)
#uselib "winspool.drv"
#cfunc global CreatePrintAsyncNotifyChannel "CreatePrintAsyncNotifyChannel" wstr, var, int, int, intptr, intptr
; res = CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification)
; pszName : LPCWSTR optional -> "wstr"
; pNotificationType : GUID* -> "var"
; eUserFilter : PrintAsyncNotifyUserFilter -> "int"
; eConversationStyle : PrintAsyncNotifyConversationStyle -> "int"
; pCallback : IPrintAsyncNotifyCallback* optional -> "intptr"
; ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> "intptr"
; ※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 (
	winspool_drv = windows.NewLazySystemDLL("winspool.drv")
	procCreatePrintAsyncNotifyChannel = winspool_drv.NewProc("CreatePrintAsyncNotifyChannel")
)

// pszName (LPCWSTR optional), pNotificationType (GUID*), eUserFilter (PrintAsyncNotifyUserFilter), eConversationStyle (PrintAsyncNotifyConversationStyle), pCallback (IPrintAsyncNotifyCallback* optional), ppIAsynchNotification (IPrintAsyncNotifyChannel** out)
r1, _, err := procCreatePrintAsyncNotifyChannel.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszName))),
	uintptr(pNotificationType),
	uintptr(eUserFilter),
	uintptr(eConversationStyle),
	uintptr(pCallback),
	uintptr(ppIAsynchNotification),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT
function CreatePrintAsyncNotifyChannel(
  pszName: PWideChar;   // LPCWSTR optional
  pNotificationType: PGUID;   // GUID*
  eUserFilter: Integer;   // PrintAsyncNotifyUserFilter
  eConversationStyle: Integer;   // PrintAsyncNotifyConversationStyle
  pCallback: Pointer;   // IPrintAsyncNotifyCallback* optional
  ppIAsynchNotification: Pointer   // IPrintAsyncNotifyChannel** out
): Integer; stdcall;
  external 'winspool.drv' name 'CreatePrintAsyncNotifyChannel';
result := DllCall("winspool.drv\CreatePrintAsyncNotifyChannel"
    , "WStr", pszName   ; LPCWSTR optional
    , "Ptr", pNotificationType   ; GUID*
    , "Int", eUserFilter   ; PrintAsyncNotifyUserFilter
    , "Int", eConversationStyle   ; PrintAsyncNotifyConversationStyle
    , "Ptr", pCallback   ; IPrintAsyncNotifyCallback* optional
    , "Ptr", ppIAsynchNotification   ; IPrintAsyncNotifyChannel** out
    , "Int")   ; return: HRESULT
●CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification) = DLL("winspool.drv", "int CreatePrintAsyncNotifyChannel(char*, void*, int, int, void*, void*)")
# 呼び出し: CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification)
# pszName : LPCWSTR optional -> "char*"
# pNotificationType : GUID* -> "void*"
# eUserFilter : PrintAsyncNotifyUserFilter -> "int"
# eConversationStyle : PrintAsyncNotifyConversationStyle -> "int"
# pCallback : IPrintAsyncNotifyCallback* optional -> "void*"
# ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> "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)。
const std = @import("std");

extern "winspool.drv" fn CreatePrintAsyncNotifyChannel(
    pszName: [*c]const u16, // LPCWSTR optional
    pNotificationType: [*c]GUID, // GUID*
    eUserFilter: i32, // PrintAsyncNotifyUserFilter
    eConversationStyle: i32, // PrintAsyncNotifyConversationStyle
    pCallback: ?*anyopaque, // IPrintAsyncNotifyCallback* optional
    ppIAsynchNotification: ?*anyopaque // IPrintAsyncNotifyChannel** out
) callconv(std.os.windows.WINAPI) i32;
proc CreatePrintAsyncNotifyChannel(
    pszName: WideCString,  # LPCWSTR optional
    pNotificationType: ptr GUID,  # GUID*
    eUserFilter: int32,  # PrintAsyncNotifyUserFilter
    eConversationStyle: int32,  # PrintAsyncNotifyConversationStyle
    pCallback: pointer,  # IPrintAsyncNotifyCallback* optional
    ppIAsynchNotification: pointer  # IPrintAsyncNotifyChannel** out
): int32 {.importc: "CreatePrintAsyncNotifyChannel", stdcall, dynlib: "winspool.drv".}
pragma(lib, "winspool.drv");
extern(Windows)
int CreatePrintAsyncNotifyChannel(
    const(wchar)* pszName,   // LPCWSTR optional
    GUID* pNotificationType,   // GUID*
    int eUserFilter,   // PrintAsyncNotifyUserFilter
    int eConversationStyle,   // PrintAsyncNotifyConversationStyle
    void* pCallback,   // IPrintAsyncNotifyCallback* optional
    void* ppIAsynchNotification   // IPrintAsyncNotifyChannel** out
);
ccall((:CreatePrintAsyncNotifyChannel, "winspool.drv"), stdcall, Int32,
      (Cwstring, Ptr{GUID}, Int32, Int32, Ptr{Cvoid}, Ptr{Cvoid}),
      pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification)
# pszName : LPCWSTR optional -> Cwstring
# pNotificationType : GUID* -> Ptr{GUID}
# eUserFilter : PrintAsyncNotifyUserFilter -> Int32
# eConversationStyle : PrintAsyncNotifyConversationStyle -> Int32
# pCallback : IPrintAsyncNotifyCallback* optional -> Ptr{Cvoid}
# ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t CreatePrintAsyncNotifyChannel(
    const uint16_t* pszName,
    void* pNotificationType,
    int32_t eUserFilter,
    int32_t eConversationStyle,
    void* pCallback,
    void* ppIAsynchNotification);
]]
local winspool.drv = ffi.load("winspool.drv")
-- winspool.drv.CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification)
-- pszName : LPCWSTR optional
-- pNotificationType : GUID*
-- eUserFilter : PrintAsyncNotifyUserFilter
-- eConversationStyle : PrintAsyncNotifyConversationStyle
-- pCallback : IPrintAsyncNotifyCallback* optional
-- ppIAsynchNotification : IPrintAsyncNotifyChannel** out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
const koffi = require('koffi');
const lib = koffi.load('winspool.drv');
const CreatePrintAsyncNotifyChannel = lib.func('__stdcall', 'CreatePrintAsyncNotifyChannel', 'int32_t', ['str16', 'void *', 'int32_t', 'int32_t', 'void *', 'void *']);
// CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification)
// pszName : LPCWSTR optional -> 'str16'
// pNotificationType : GUID* -> 'void *'
// eUserFilter : PrintAsyncNotifyUserFilter -> 'int32_t'
// eConversationStyle : PrintAsyncNotifyConversationStyle -> 'int32_t'
// pCallback : IPrintAsyncNotifyCallback* optional -> 'void *'
// ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
const lib = Deno.dlopen("winspool.drv", {
  CreatePrintAsyncNotifyChannel: { parameters: ["buffer", "pointer", "i32", "i32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification)
// pszName : LPCWSTR optional -> "buffer"
// pNotificationType : GUID* -> "pointer"
// eUserFilter : PrintAsyncNotifyUserFilter -> "i32"
// eConversationStyle : PrintAsyncNotifyConversationStyle -> "i32"
// pCallback : IPrintAsyncNotifyCallback* optional -> "pointer"
// ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
int32_t CreatePrintAsyncNotifyChannel(
    const uint16_t* pszName,
    void* pNotificationType,
    int32_t eUserFilter,
    int32_t eConversationStyle,
    void* pCallback,
    void* ppIAsynchNotification);
C, "winspool.drv");
// $ffi->CreatePrintAsyncNotifyChannel(pszName, pNotificationType, eUserFilter, eConversationStyle, pCallback, ppIAsynchNotification);
// pszName : LPCWSTR optional
// pNotificationType : GUID*
// eUserFilter : PrintAsyncNotifyUserFilter
// eConversationStyle : PrintAsyncNotifyConversationStyle
// pCallback : IPrintAsyncNotifyCallback* optional
// ppIAsynchNotification : IPrintAsyncNotifyChannel** out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。
import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Winspool.drv extends StdCallLibrary {
    Winspool.drv INSTANCE = Native.load("winspool.drv", Winspool.drv.class);
    int CreatePrintAsyncNotifyChannel(
        WString pszName,   // LPCWSTR optional
        Pointer pNotificationType,   // GUID*
        int eUserFilter,   // PrintAsyncNotifyUserFilter
        int eConversationStyle,   // PrintAsyncNotifyConversationStyle
        Pointer pCallback,   // IPrintAsyncNotifyCallback* optional
        Pointer ppIAsynchNotification   // IPrintAsyncNotifyChannel** out
    );
}
@[Link("winspool.drv")]
lib Libwinspool.drv
  fun CreatePrintAsyncNotifyChannel = CreatePrintAsyncNotifyChannel(
    pszName : UInt16*,   # LPCWSTR optional
    pNotificationType : GUID*,   # GUID*
    eUserFilter : Int32,   # PrintAsyncNotifyUserFilter
    eConversationStyle : Int32,   # PrintAsyncNotifyConversationStyle
    pCallback : Void*,   # IPrintAsyncNotifyCallback* optional
    ppIAsynchNotification : Void*   # IPrintAsyncNotifyChannel** out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。
import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef CreatePrintAsyncNotifyChannelNative = Int32 Function(Pointer<Utf16>, Pointer<Void>, Int32, Int32, Pointer<Void>, Pointer<Void>);
typedef CreatePrintAsyncNotifyChannelDart = int Function(Pointer<Utf16>, Pointer<Void>, int, int, Pointer<Void>, Pointer<Void>);
final CreatePrintAsyncNotifyChannel = DynamicLibrary.open('winspool.drv')
    .lookupFunction<CreatePrintAsyncNotifyChannelNative, CreatePrintAsyncNotifyChannelDart>('CreatePrintAsyncNotifyChannel');
// pszName : LPCWSTR optional -> Pointer<Utf16>
// pNotificationType : GUID* -> Pointer<Void>
// eUserFilter : PrintAsyncNotifyUserFilter -> Int32
// eConversationStyle : PrintAsyncNotifyConversationStyle -> Int32
// pCallback : IPrintAsyncNotifyCallback* optional -> Pointer<Void>
// ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function CreatePrintAsyncNotifyChannel(
  pszName: PWideChar;   // LPCWSTR optional
  pNotificationType: PGUID;   // GUID*
  eUserFilter: Integer;   // PrintAsyncNotifyUserFilter
  eConversationStyle: Integer;   // PrintAsyncNotifyConversationStyle
  pCallback: Pointer;   // IPrintAsyncNotifyCallback* optional
  ppIAsynchNotification: Pointer   // IPrintAsyncNotifyChannel** out
): Integer; stdcall;
  external 'winspool.drv' name 'CreatePrintAsyncNotifyChannel';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "CreatePrintAsyncNotifyChannel"
  c_CreatePrintAsyncNotifyChannel :: CWString -> Ptr () -> Int32 -> Int32 -> Ptr () -> Ptr () -> IO Int32
-- pszName : LPCWSTR optional -> CWString
-- pNotificationType : GUID* -> Ptr ()
-- eUserFilter : PrintAsyncNotifyUserFilter -> Int32
-- eConversationStyle : PrintAsyncNotifyConversationStyle -> Int32
-- pCallback : IPrintAsyncNotifyCallback* optional -> Ptr ()
-- ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。
open Ctypes
open Foreign

let createprintasyncnotifychannel =
  foreign "CreatePrintAsyncNotifyChannel"
    ((ptr uint16_t) @-> (ptr void) @-> int32_t @-> int32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* pszName : LPCWSTR optional -> (ptr uint16_t) *)
(* pNotificationType : GUID* -> (ptr void) *)
(* eUserFilter : PrintAsyncNotifyUserFilter -> int32_t *)
(* eConversationStyle : PrintAsyncNotifyConversationStyle -> int32_t *)
(* pCallback : IPrintAsyncNotifyCallback* optional -> (ptr void) *)
(* ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)
(cffi:define-foreign-library winspool.drv (t "winspool.drv"))
(cffi:use-foreign-library winspool.drv)

(cffi:defcfun ("CreatePrintAsyncNotifyChannel" create-print-async-notify-channel :convention :stdcall) :int32
  (psz-name (:string :encoding :utf-16le))   ; LPCWSTR optional
  (p-notification-type :pointer)   ; GUID*
  (e-user-filter :int32)   ; PrintAsyncNotifyUserFilter
  (e-conversation-style :int32)   ; PrintAsyncNotifyConversationStyle
  (p-callback :pointer)   ; IPrintAsyncNotifyCallback* optional
  (pp-iasynch-notification :pointer))   ; IPrintAsyncNotifyChannel** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $CreatePrintAsyncNotifyChannel = Win32::API::More->new('winspool.drv',
    'int CreatePrintAsyncNotifyChannel(LPCWSTR pszName, LPVOID pNotificationType, int eUserFilter, int eConversationStyle, LPVOID pCallback, LPVOID ppIAsynchNotification)');
# my $ret = $CreatePrintAsyncNotifyChannel->Call($pszName, $pNotificationType, $eUserFilter, $eConversationStyle, $pCallback, $ppIAsynchNotification);
# pszName : LPCWSTR optional -> LPCWSTR
# pNotificationType : GUID* -> LPVOID
# eUserFilter : PrintAsyncNotifyUserFilter -> int
# eConversationStyle : PrintAsyncNotifyConversationStyle -> int
# pCallback : IPrintAsyncNotifyCallback* optional -> LPVOID
# ppIAsynchNotification : IPrintAsyncNotifyChannel** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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