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EnumPrintProcessorsW

関数

インストール済みの印刷プロセッサを列挙する(Unicode版)。

DLLwinspool.drv文字セットUnicode (-W)呼出規約winapi

シグネチャ

// winspool.drv  (Unicode / -W)
#include <windows.h>

BOOL EnumPrintProcessorsW(
    LPCWSTR pName,   // optional
    LPCWSTR pEnvironment,   // optional
    DWORD Level,
    BYTE* pPrintProcessorInfo,   // optional
    DWORD cbBuf,
    DWORD* pcbNeeded,
    DWORD* pcReturned
);

パラメーター

名前	型	方向	説明
pName	LPCWSTR	inoptional	対象サーバー名を指すポインタ。ローカルならNULLを指定する。
pEnvironment	LPCWSTR	inoptional	対象環境名を指すポインタ。NULLで現在の環境を使う。
Level	DWORD	in	情報のレベル。現在は1のみ有効である。
pPrintProcessorInfo	BYTE*	outoptional	列挙結果を受け取るPRINTPROCESSOR_INFO_1配列用バッファへのポインタ。
cbBuf	DWORD	in	バッファのサイズ(バイト単位)。
pcbNeeded	DWORD*	out	必要なバイト数を受け取る変数へのポインタ。
pcReturned	DWORD*	out	列挙された印刷プロセッサ数を受け取る変数へのポインタ。

戻り値の型: BOOL

各言語での呼び出し定義

// winspool.drv  (Unicode / -W)
#include <windows.h>

BOOL EnumPrintProcessorsW(
    LPCWSTR pName,   // optional
    LPCWSTR pEnvironment,   // optional
    DWORD Level,
    BYTE* pPrintProcessorInfo,   // optional
    DWORD cbBuf,
    DWORD* pcbNeeded,
    DWORD* pcReturned
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern bool EnumPrintProcessorsW(
    [MarshalAs(UnmanagedType.LPWStr)] string pName,   // LPCWSTR optional
    [MarshalAs(UnmanagedType.LPWStr)] string pEnvironment,   // LPCWSTR optional
    uint Level,   // DWORD
    IntPtr pPrintProcessorInfo,   // BYTE* optional, out
    uint cbBuf,   // DWORD
    out uint pcbNeeded,   // DWORD* out
    out uint pcReturned   // DWORD* out
);

<DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function EnumPrintProcessorsW(
    <MarshalAs(UnmanagedType.LPWStr)> pName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pEnvironment As String,   ' LPCWSTR optional
    Level As UInteger,   ' DWORD
    pPrintProcessorInfo As IntPtr,   ' BYTE* optional, out
    cbBuf As UInteger,   ' DWORD
    <Out> ByRef pcbNeeded As UInteger,   ' DWORD* out
    <Out> ByRef pcReturned As UInteger   ' DWORD* out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' pName : LPCWSTR optional
' pEnvironment : LPCWSTR optional
' Level : DWORD
' pPrintProcessorInfo : BYTE* optional, out
' cbBuf : DWORD
' pcbNeeded : DWORD* out
' pcReturned : DWORD* out
Declare PtrSafe Function EnumPrintProcessorsW Lib "winspool.drv" ( _
    ByVal pName As LongPtr, _
    ByVal pEnvironment As LongPtr, _
    ByVal Level As Long, _
    ByVal pPrintProcessorInfo As LongPtr, _
    ByVal cbBuf As Long, _
    ByRef pcbNeeded As Long, _
    ByRef pcReturned As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

EnumPrintProcessorsW = ctypes.windll.LoadLibrary("winspool.drv").EnumPrintProcessorsW
EnumPrintProcessorsW.restype = wintypes.BOOL
EnumPrintProcessorsW.argtypes = [
    wintypes.LPCWSTR,  # pName : LPCWSTR optional
    wintypes.LPCWSTR,  # pEnvironment : LPCWSTR optional
    wintypes.DWORD,  # Level : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pPrintProcessorInfo : BYTE* optional, out
    wintypes.DWORD,  # cbBuf : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcbNeeded : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # pcReturned : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
EnumPrintProcessorsW = Fiddle::Function.new(
  lib['EnumPrintProcessorsW'],
  [
    Fiddle::TYPE_VOIDP,  # pName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pEnvironment : LPCWSTR optional
    -Fiddle::TYPE_INT,  # Level : DWORD
    Fiddle::TYPE_VOIDP,  # pPrintProcessorInfo : BYTE* optional, out
    -Fiddle::TYPE_INT,  # cbBuf : DWORD
    Fiddle::TYPE_VOIDP,  # pcbNeeded : DWORD* out
    Fiddle::TYPE_VOIDP,  # pcReturned : DWORD* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winspool.drv")]
extern "system" {
    fn EnumPrintProcessorsW(
        pName: *const u16,  // LPCWSTR optional
        pEnvironment: *const u16,  // LPCWSTR optional
        Level: u32,  // DWORD
        pPrintProcessorInfo: *mut u8,  // BYTE* optional, out
        cbBuf: u32,  // DWORD
        pcbNeeded: *mut u32,  // DWORD* out
        pcReturned: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("winspool.drv", CharSet = CharSet.Unicode)]
public static extern bool EnumPrintProcessorsW([MarshalAs(UnmanagedType.LPWStr)] string pName, [MarshalAs(UnmanagedType.LPWStr)] string pEnvironment, uint Level, IntPtr pPrintProcessorInfo, uint cbBuf, out uint pcbNeeded, out uint pcReturned);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_EnumPrintProcessorsW' -Namespace Win32 -PassThru
# $api::EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned)

#uselib "winspool.drv"
#func global EnumPrintProcessorsW "EnumPrintProcessorsW" wptr, wptr, wptr, wptr, wptr, wptr, wptr
; EnumPrintProcessorsW pName, pEnvironment, Level, varptr(pPrintProcessorInfo), cbBuf, varptr(pcbNeeded), varptr(pcReturned)   ; 戻り値は stat
; pName : LPCWSTR optional -> "wptr"
; pEnvironment : LPCWSTR optional -> "wptr"
; Level : DWORD -> "wptr"
; pPrintProcessorInfo : BYTE* optional, out -> "wptr"
; cbBuf : DWORD -> "wptr"
; pcbNeeded : DWORD* out -> "wptr"
; pcReturned : DWORD* out -> "wptr"
; ※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 EnumPrintProcessorsW "EnumPrintProcessorsW" wstr, wstr, int, var, int, var, var
; res = EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned)
; pName : LPCWSTR optional -> "wstr"
; pEnvironment : LPCWSTR optional -> "wstr"
; Level : DWORD -> "int"
; pPrintProcessorInfo : BYTE* optional, out -> "var"
; cbBuf : DWORD -> "int"
; pcbNeeded : DWORD* out -> "var"
; pcReturned : DWORD* out -> "var"
; ※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。#uselib "winspool.drv"
#cfunc global EnumPrintProcessorsW "EnumPrintProcessorsW" wstr, wstr, int, sptr, int, sptr, sptr
; res = EnumPrintProcessorsW(pName, pEnvironment, Level, varptr(pPrintProcessorInfo), cbBuf, varptr(pcbNeeded), varptr(pcReturned))
; pName : LPCWSTR optional -> "wstr"
; pEnvironment : LPCWSTR optional -> "wstr"
; Level : DWORD -> "int"
; pPrintProcessorInfo : BYTE* optional, out -> "sptr"
; cbBuf : DWORD -> "int"
; pcbNeeded : DWORD* out -> "sptr"
; pcReturned : DWORD* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL EnumPrintProcessorsW(LPCWSTR pName, LPCWSTR pEnvironment, DWORD Level, BYTE* pPrintProcessorInfo, DWORD cbBuf, DWORD* pcbNeeded, DWORD* pcReturned)
#uselib "winspool.drv"
#cfunc global EnumPrintProcessorsW "EnumPrintProcessorsW" wstr, wstr, int, var, int, var, var
; res = EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned)
; pName : LPCWSTR optional -> "wstr"
; pEnvironment : LPCWSTR optional -> "wstr"
; Level : DWORD -> "int"
; pPrintProcessorInfo : BYTE* optional, out -> "var"
; cbBuf : DWORD -> "int"
; pcbNeeded : DWORD* out -> "var"
; pcReturned : DWORD* out -> "var"
; ※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。; BOOL EnumPrintProcessorsW(LPCWSTR pName, LPCWSTR pEnvironment, DWORD Level, BYTE* pPrintProcessorInfo, DWORD cbBuf, DWORD* pcbNeeded, DWORD* pcReturned)
#uselib "winspool.drv"
#cfunc global EnumPrintProcessorsW "EnumPrintProcessorsW" wstr, wstr, int, intptr, int, intptr, intptr
; res = EnumPrintProcessorsW(pName, pEnvironment, Level, varptr(pPrintProcessorInfo), cbBuf, varptr(pcbNeeded), varptr(pcReturned))
; pName : LPCWSTR optional -> "wstr"
; pEnvironment : LPCWSTR optional -> "wstr"
; Level : DWORD -> "int"
; pPrintProcessorInfo : BYTE* optional, out -> "intptr"
; cbBuf : DWORD -> "int"
; pcbNeeded : DWORD* out -> "intptr"
; pcReturned : DWORD* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	winspool_drv = windows.NewLazySystemDLL("winspool.drv")
	procEnumPrintProcessorsW = winspool_drv.NewProc("EnumPrintProcessorsW")
)

// pName (LPCWSTR optional), pEnvironment (LPCWSTR optional), Level (DWORD), pPrintProcessorInfo (BYTE* optional, out), cbBuf (DWORD), pcbNeeded (DWORD* out), pcReturned (DWORD* out)
r1, _, err := procEnumPrintProcessorsW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pEnvironment))),
	uintptr(Level),
	uintptr(pPrintProcessorInfo),
	uintptr(cbBuf),
	uintptr(pcbNeeded),
	uintptr(pcReturned),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EnumPrintProcessorsW(
  pName: PWideChar;   // LPCWSTR optional
  pEnvironment: PWideChar;   // LPCWSTR optional
  Level: DWORD;   // DWORD
  pPrintProcessorInfo: Pointer;   // BYTE* optional, out
  cbBuf: DWORD;   // DWORD
  pcbNeeded: Pointer;   // DWORD* out
  pcReturned: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'winspool.drv' name 'EnumPrintProcessorsW';

result := DllCall("winspool.drv\EnumPrintProcessorsW"
    , "WStr", pName   ; LPCWSTR optional
    , "WStr", pEnvironment   ; LPCWSTR optional
    , "UInt", Level   ; DWORD
    , "Ptr", pPrintProcessorInfo   ; BYTE* optional, out
    , "UInt", cbBuf   ; DWORD
    , "Ptr", pcbNeeded   ; DWORD* out
    , "Ptr", pcReturned   ; DWORD* out
    , "Int")   ; return: BOOL

●EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned) = DLL("winspool.drv", "bool EnumPrintProcessorsW(char*, char*, dword, void*, dword, void*, void*)")
# 呼び出し: EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned)
# pName : LPCWSTR optional -> "char*"
# pEnvironment : LPCWSTR optional -> "char*"
# Level : DWORD -> "dword"
# pPrintProcessorInfo : BYTE* optional, out -> "void*"
# cbBuf : DWORD -> "dword"
# pcbNeeded : DWORD* out -> "void*"
# pcReturned : DWORD* 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "winspool.drv" fn EnumPrintProcessorsW(
    pName: [*c]const u16, // LPCWSTR optional
    pEnvironment: [*c]const u16, // LPCWSTR optional
    Level: u32, // DWORD
    pPrintProcessorInfo: [*c]u8, // BYTE* optional, out
    cbBuf: u32, // DWORD
    pcbNeeded: [*c]u32, // DWORD* out
    pcReturned: [*c]u32 // DWORD* out
) callconv(std.os.windows.WINAPI) i32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc EnumPrintProcessorsW(
    pName: WideCString,  # LPCWSTR optional
    pEnvironment: WideCString,  # LPCWSTR optional
    Level: uint32,  # DWORD
    pPrintProcessorInfo: ptr uint8,  # BYTE* optional, out
    cbBuf: uint32,  # DWORD
    pcbNeeded: ptr uint32,  # DWORD* out
    pcReturned: ptr uint32  # DWORD* out
): int32 {.importc: "EnumPrintProcessorsW", stdcall, dynlib: "winspool.drv".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "winspool.drv");
extern(Windows)
int EnumPrintProcessorsW(
    const(wchar)* pName,   // LPCWSTR optional
    const(wchar)* pEnvironment,   // LPCWSTR optional
    uint Level,   // DWORD
    ubyte* pPrintProcessorInfo,   // BYTE* optional, out
    uint cbBuf,   // DWORD
    uint* pcbNeeded,   // DWORD* out
    uint* pcReturned   // DWORD* out
);

ccall((:EnumPrintProcessorsW, "winspool.drv"), stdcall, Int32,
      (Cwstring, Cwstring, UInt32, Ptr{UInt8}, UInt32, Ptr{UInt32}, Ptr{UInt32}),
      pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned)
# pName : LPCWSTR optional -> Cwstring
# pEnvironment : LPCWSTR optional -> Cwstring
# Level : DWORD -> UInt32
# pPrintProcessorInfo : BYTE* optional, out -> Ptr{UInt8}
# cbBuf : DWORD -> UInt32
# pcbNeeded : DWORD* out -> Ptr{UInt32}
# pcReturned : DWORD* out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
int32_t EnumPrintProcessorsW(
    const uint16_t* pName,
    const uint16_t* pEnvironment,
    uint32_t Level,
    uint8_t* pPrintProcessorInfo,
    uint32_t cbBuf,
    uint32_t* pcbNeeded,
    uint32_t* pcReturned);
]]
local winspool.drv = ffi.load("winspool.drv")
-- winspool.drv.EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned)
-- pName : LPCWSTR optional
-- pEnvironment : LPCWSTR optional
-- Level : DWORD
-- pPrintProcessorInfo : BYTE* optional, out
-- cbBuf : DWORD
-- pcbNeeded : DWORD* out
-- pcReturned : DWORD* 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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('winspool.drv');
const EnumPrintProcessorsW = lib.func('__stdcall', 'EnumPrintProcessorsW', 'int32_t', ['str16', 'str16', 'uint32_t', 'uint8_t *', 'uint32_t', 'uint32_t *', 'uint32_t *']);
// EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned)
// pName : LPCWSTR optional -> 'str16'
// pEnvironment : LPCWSTR optional -> 'str16'
// Level : DWORD -> 'uint32_t'
// pPrintProcessorInfo : BYTE* optional, out -> 'uint8_t *'
// cbBuf : DWORD -> 'uint32_t'
// pcbNeeded : DWORD* out -> 'uint32_t *'
// pcReturned : DWORD* out -> 'uint32_t *'
// 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", {
  EnumPrintProcessorsW: { parameters: ["buffer", "buffer", "u32", "pointer", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned)
// pName : LPCWSTR optional -> "buffer"
// pEnvironment : LPCWSTR optional -> "buffer"
// Level : DWORD -> "u32"
// pPrintProcessorInfo : BYTE* optional, out -> "pointer"
// cbBuf : DWORD -> "u32"
// pcbNeeded : DWORD* out -> "pointer"
// pcReturned : DWORD* out -> "pointer"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)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 EnumPrintProcessorsW(
    const uint16_t* pName,
    const uint16_t* pEnvironment,
    uint32_t Level,
    uint8_t* pPrintProcessorInfo,
    uint32_t cbBuf,
    uint32_t* pcbNeeded,
    uint32_t* pcReturned);
C, "winspool.drv");
// $ffi->EnumPrintProcessorsW(pName, pEnvironment, Level, pPrintProcessorInfo, cbBuf, pcbNeeded, pcReturned);
// pName : LPCWSTR optional
// pEnvironment : LPCWSTR optional
// Level : DWORD
// pPrintProcessorInfo : BYTE* optional, out
// cbBuf : DWORD
// pcbNeeded : DWORD* out
// pcReturned : DWORD* 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, W32APIOptions.UNICODE_OPTIONS);
    boolean EnumPrintProcessorsW(
        WString pName,   // LPCWSTR optional
        WString pEnvironment,   // LPCWSTR optional
        int Level,   // DWORD
        byte[] pPrintProcessorInfo,   // BYTE* optional, out
        int cbBuf,   // DWORD
        IntByReference pcbNeeded,   // DWORD* out
        IntByReference pcReturned   // DWORD* out
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("winspool.drv")]
lib Libwinspool.drv
  fun EnumPrintProcessorsW = EnumPrintProcessorsW(
    pName : UInt16*,   # LPCWSTR optional
    pEnvironment : UInt16*,   # LPCWSTR optional
    Level : UInt32,   # DWORD
    pPrintProcessorInfo : UInt8*,   # BYTE* optional, out
    cbBuf : UInt32,   # DWORD
    pcbNeeded : UInt32*,   # DWORD* out
    pcReturned : UInt32*   # DWORD* 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 EnumPrintProcessorsWNative = Int32 Function(Pointer<Utf16>, Pointer<Utf16>, Uint32, Pointer<Uint8>, Uint32, Pointer<Uint32>, Pointer<Uint32>);
typedef EnumPrintProcessorsWDart = int Function(Pointer<Utf16>, Pointer<Utf16>, int, Pointer<Uint8>, int, Pointer<Uint32>, Pointer<Uint32>);
final EnumPrintProcessorsW = DynamicLibrary.open('winspool.drv')
    .lookupFunction<EnumPrintProcessorsWNative, EnumPrintProcessorsWDart>('EnumPrintProcessorsW');
// pName : LPCWSTR optional -> Pointer<Utf16>
// pEnvironment : LPCWSTR optional -> Pointer<Utf16>
// Level : DWORD -> Uint32
// pPrintProcessorInfo : BYTE* optional, out -> Pointer<Uint8>
// cbBuf : DWORD -> Uint32
// pcbNeeded : DWORD* out -> Pointer<Uint32>
// pcReturned : DWORD* out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function EnumPrintProcessorsW(
  pName: PWideChar;   // LPCWSTR optional
  pEnvironment: PWideChar;   // LPCWSTR optional
  Level: DWORD;   // DWORD
  pPrintProcessorInfo: Pointer;   // BYTE* optional, out
  cbBuf: DWORD;   // DWORD
  pcbNeeded: Pointer;   // DWORD* out
  pcReturned: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'winspool.drv' name 'EnumPrintProcessorsW';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "EnumPrintProcessorsW"
  c_EnumPrintProcessorsW :: CWString -> CWString -> Word32 -> Ptr Word8 -> Word32 -> Ptr Word32 -> Ptr Word32 -> IO CInt
-- pName : LPCWSTR optional -> CWString
-- pEnvironment : LPCWSTR optional -> CWString
-- Level : DWORD -> Word32
-- pPrintProcessorInfo : BYTE* optional, out -> Ptr Word8
-- cbBuf : DWORD -> Word32
-- pcbNeeded : DWORD* out -> Ptr Word32
-- pcReturned : DWORD* out -> Ptr Word32
-- 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 enumprintprocessorsw =
  foreign "EnumPrintProcessorsW"
    ((ptr uint16_t) @-> (ptr uint16_t) @-> uint32_t @-> (ptr uint8_t) @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint32_t) @-> returning int32_t)
(* pName : LPCWSTR optional -> (ptr uint16_t) *)
(* pEnvironment : LPCWSTR optional -> (ptr uint16_t) *)
(* Level : DWORD -> uint32_t *)
(* pPrintProcessorInfo : BYTE* optional, out -> (ptr uint8_t) *)
(* cbBuf : DWORD -> uint32_t *)
(* pcbNeeded : DWORD* out -> (ptr uint32_t) *)
(* pcReturned : DWORD* out -> (ptr uint32_t) *)
(* 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 ("EnumPrintProcessorsW" enum-print-processors-w :convention :stdcall) :int32
  (p-name (:string :encoding :utf-16le))   ; LPCWSTR optional
  (p-environment (:string :encoding :utf-16le))   ; LPCWSTR optional
  (level :uint32)   ; DWORD
  (p-print-processor-info :pointer)   ; BYTE* optional, out
  (cb-buf :uint32)   ; DWORD
  (pcb-needed :pointer)   ; DWORD* out
  (pc-returned :pointer))   ; DWORD* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $EnumPrintProcessorsW = Win32::API::More->new('winspool.drv',
    'BOOL EnumPrintProcessorsW(LPCWSTR pName, LPCWSTR pEnvironment, DWORD Level, LPVOID pPrintProcessorInfo, DWORD cbBuf, LPVOID pcbNeeded, LPVOID pcReturned)');
# my $ret = $EnumPrintProcessorsW->Call($pName, $pEnvironment, $Level, $pPrintProcessorInfo, $cbBuf, $pcbNeeded, $pcReturned);
# pName : LPCWSTR optional -> LPCWSTR
# pEnvironment : LPCWSTR optional -> LPCWSTR
# Level : DWORD -> DWORD
# pPrintProcessorInfo : BYTE* optional, out -> LPVOID
# cbBuf : DWORD -> DWORD
# pcbNeeded : DWORD* out -> LPVOID
# pcReturned : DWORD* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。

EnumPrintProcessorsW

シグネチャ

パラメーター

各言語での呼び出し定義

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