GetCorePrinterDriversW

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

HRESULT GetCorePrinterDriversW(
    LPCWSTR pszServer,   // optional
    LPCWSTR pszEnvironment,   // optional
    LPCWSTR pszzCoreDriverDependencies,
    DWORD cCorePrinterDrivers,
    CORE_PRINTER_DRIVERW* pCorePrinterDrivers
);

<DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function GetCorePrinterDriversW(
    <MarshalAs(UnmanagedType.LPWStr)> pszServer As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pszEnvironment As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pszzCoreDriverDependencies As String,   ' LPCWSTR
    cCorePrinterDrivers As UInteger,   ' DWORD
    pCorePrinterDrivers As IntPtr   ' CORE_PRINTER_DRIVERW* out
) As Integer
End Function

' pszServer : LPCWSTR optional
' pszEnvironment : LPCWSTR optional
' pszzCoreDriverDependencies : LPCWSTR
' cCorePrinterDrivers : DWORD
' pCorePrinterDrivers : CORE_PRINTER_DRIVERW* out
Declare PtrSafe Function GetCorePrinterDriversW Lib "winspool.drv" ( _
    ByVal pszServer As LongPtr, _
    ByVal pszEnvironment As LongPtr, _
    ByVal pszzCoreDriverDependencies As LongPtr, _
    ByVal cCorePrinterDrivers As Long, _
    ByVal pCorePrinterDrivers As LongPtr) 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

GetCorePrinterDriversW = ctypes.windll.LoadLibrary("winspool.drv").GetCorePrinterDriversW
GetCorePrinterDriversW.restype = ctypes.c_int
GetCorePrinterDriversW.argtypes = [
    wintypes.LPCWSTR,  # pszServer : LPCWSTR optional
    wintypes.LPCWSTR,  # pszEnvironment : LPCWSTR optional
    wintypes.LPCWSTR,  # pszzCoreDriverDependencies : LPCWSTR
    wintypes.DWORD,  # cCorePrinterDrivers : DWORD
    ctypes.c_void_p,  # pCorePrinterDrivers : CORE_PRINTER_DRIVERW* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('winspool.drv')
GetCorePrinterDriversW = Fiddle::Function.new(
  lib['GetCorePrinterDriversW'],
  [
    Fiddle::TYPE_VOIDP,  # pszServer : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pszEnvironment : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pszzCoreDriverDependencies : LPCWSTR
    -Fiddle::TYPE_INT,  # cCorePrinterDrivers : DWORD
    Fiddle::TYPE_VOIDP,  # pCorePrinterDrivers : CORE_PRINTER_DRIVERW* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winspool.drv")]
extern "system" {
    fn GetCorePrinterDriversW(
        pszServer: *const u16,  // LPCWSTR optional
        pszEnvironment: *const u16,  // LPCWSTR optional
        pszzCoreDriverDependencies: *const u16,  // LPCWSTR
        cCorePrinterDrivers: u32,  // DWORD
        pCorePrinterDrivers: *mut CORE_PRINTER_DRIVERW  // CORE_PRINTER_DRIVERW* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("winspool.drv", CharSet = CharSet.Unicode)]
public static extern int GetCorePrinterDriversW([MarshalAs(UnmanagedType.LPWStr)] string pszServer, [MarshalAs(UnmanagedType.LPWStr)] string pszEnvironment, [MarshalAs(UnmanagedType.LPWStr)] string pszzCoreDriverDependencies, uint cCorePrinterDrivers, IntPtr pCorePrinterDrivers);
"@
$api = Add-Type -MemberDefinition $sig -Name 'winspool.drv_GetCorePrinterDriversW' -Namespace Win32 -PassThru
# $api::GetCorePrinterDriversW(pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, pCorePrinterDrivers)

#uselib "winspool.drv"
#func global GetCorePrinterDriversW "GetCorePrinterDriversW" wptr, wptr, wptr, wptr, wptr
; GetCorePrinterDriversW pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, varptr(pCorePrinterDrivers)   ; 戻り値は stat
; pszServer : LPCWSTR optional -> "wptr"
; pszEnvironment : LPCWSTR optional -> "wptr"
; pszzCoreDriverDependencies : LPCWSTR -> "wptr"
; cCorePrinterDrivers : DWORD -> "wptr"
; pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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。

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

var (
	winspool_drv = windows.NewLazySystemDLL("winspool.drv")
	procGetCorePrinterDriversW = winspool_drv.NewProc("GetCorePrinterDriversW")
)

// pszServer (LPCWSTR optional), pszEnvironment (LPCWSTR optional), pszzCoreDriverDependencies (LPCWSTR), cCorePrinterDrivers (DWORD), pCorePrinterDrivers (CORE_PRINTER_DRIVERW* out)
r1, _, err := procGetCorePrinterDriversW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszServer))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszEnvironment))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszzCoreDriverDependencies))),
	uintptr(cCorePrinterDrivers),
	uintptr(pCorePrinterDrivers),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetCorePrinterDriversW(
  pszServer: PWideChar;   // LPCWSTR optional
  pszEnvironment: PWideChar;   // LPCWSTR optional
  pszzCoreDriverDependencies: PWideChar;   // LPCWSTR
  cCorePrinterDrivers: DWORD;   // DWORD
  pCorePrinterDrivers: Pointer   // CORE_PRINTER_DRIVERW* out
): Integer; stdcall;
  external 'winspool.drv' name 'GetCorePrinterDriversW';

result := DllCall("winspool.drv\GetCorePrinterDriversW"
    , "WStr", pszServer   ; LPCWSTR optional
    , "WStr", pszEnvironment   ; LPCWSTR optional
    , "WStr", pszzCoreDriverDependencies   ; LPCWSTR
    , "UInt", cCorePrinterDrivers   ; DWORD
    , "Ptr", pCorePrinterDrivers   ; CORE_PRINTER_DRIVERW* out
    , "Int")   ; return: HRESULT

●GetCorePrinterDriversW(pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, pCorePrinterDrivers) = DLL("winspool.drv", "int GetCorePrinterDriversW(char*, char*, char*, dword, void*)")
# 呼び出し: GetCorePrinterDriversW(pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, pCorePrinterDrivers)
# pszServer : LPCWSTR optional -> "char*"
# pszEnvironment : LPCWSTR optional -> "char*"
# pszzCoreDriverDependencies : LPCWSTR -> "char*"
# cCorePrinterDrivers : DWORD -> "dword"
# pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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 GetCorePrinterDriversW(
    pszServer: [*c]const u16, // LPCWSTR optional
    pszEnvironment: [*c]const u16, // LPCWSTR optional
    pszzCoreDriverDependencies: [*c]const u16, // LPCWSTR
    cCorePrinterDrivers: u32, // DWORD
    pCorePrinterDrivers: [*c]CORE_PRINTER_DRIVERW // CORE_PRINTER_DRIVERW* 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 GetCorePrinterDriversW(
    pszServer: WideCString,  # LPCWSTR optional
    pszEnvironment: WideCString,  # LPCWSTR optional
    pszzCoreDriverDependencies: WideCString,  # LPCWSTR
    cCorePrinterDrivers: uint32,  # DWORD
    pCorePrinterDrivers: ptr CORE_PRINTER_DRIVERW  # CORE_PRINTER_DRIVERW* out
): int32 {.importc: "GetCorePrinterDriversW", stdcall, dynlib: "winspool.drv".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "winspool.drv");
extern(Windows)
int GetCorePrinterDriversW(
    const(wchar)* pszServer,   // LPCWSTR optional
    const(wchar)* pszEnvironment,   // LPCWSTR optional
    const(wchar)* pszzCoreDriverDependencies,   // LPCWSTR
    uint cCorePrinterDrivers,   // DWORD
    CORE_PRINTER_DRIVERW* pCorePrinterDrivers   // CORE_PRINTER_DRIVERW* out
);

ccall((:GetCorePrinterDriversW, "winspool.drv"), stdcall, Int32,
      (Cwstring, Cwstring, Cwstring, UInt32, Ptr{CORE_PRINTER_DRIVERW}),
      pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, pCorePrinterDrivers)
# pszServer : LPCWSTR optional -> Cwstring
# pszEnvironment : LPCWSTR optional -> Cwstring
# pszzCoreDriverDependencies : LPCWSTR -> Cwstring
# cCorePrinterDrivers : DWORD -> UInt32
# pCorePrinterDrivers : CORE_PRINTER_DRIVERW* out -> Ptr{CORE_PRINTER_DRIVERW}
# 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 GetCorePrinterDriversW(
    const uint16_t* pszServer,
    const uint16_t* pszEnvironment,
    const uint16_t* pszzCoreDriverDependencies,
    uint32_t cCorePrinterDrivers,
    void* pCorePrinterDrivers);
]]
local winspool.drv = ffi.load("winspool.drv")
-- winspool.drv.GetCorePrinterDriversW(pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, pCorePrinterDrivers)
-- pszServer : LPCWSTR optional
-- pszEnvironment : LPCWSTR optional
-- pszzCoreDriverDependencies : LPCWSTR
-- cCorePrinterDrivers : DWORD
-- pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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 GetCorePrinterDriversW = lib.func('__stdcall', 'GetCorePrinterDriversW', 'int32_t', ['str16', 'str16', 'str16', 'uint32_t', 'void *']);
// GetCorePrinterDriversW(pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, pCorePrinterDrivers)
// pszServer : LPCWSTR optional -> 'str16'
// pszEnvironment : LPCWSTR optional -> 'str16'
// pszzCoreDriverDependencies : LPCWSTR -> 'str16'
// cCorePrinterDrivers : DWORD -> 'uint32_t'
// pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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", {
  GetCorePrinterDriversW: { parameters: ["buffer", "buffer", "buffer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.GetCorePrinterDriversW(pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, pCorePrinterDrivers)
// pszServer : LPCWSTR optional -> "buffer"
// pszEnvironment : LPCWSTR optional -> "buffer"
// pszzCoreDriverDependencies : LPCWSTR -> "buffer"
// cCorePrinterDrivers : DWORD -> "u32"
// pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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 GetCorePrinterDriversW(
    const uint16_t* pszServer,
    const uint16_t* pszEnvironment,
    const uint16_t* pszzCoreDriverDependencies,
    uint32_t cCorePrinterDrivers,
    void* pCorePrinterDrivers);
C, "winspool.drv");
// $ffi->GetCorePrinterDriversW(pszServer, pszEnvironment, pszzCoreDriverDependencies, cCorePrinterDrivers, pCorePrinterDrivers);
// pszServer : LPCWSTR optional
// pszEnvironment : LPCWSTR optional
// pszzCoreDriverDependencies : LPCWSTR
// cCorePrinterDrivers : DWORD
// pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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);
    int GetCorePrinterDriversW(
        WString pszServer,   // LPCWSTR optional
        WString pszEnvironment,   // LPCWSTR optional
        WString pszzCoreDriverDependencies,   // LPCWSTR
        int cCorePrinterDrivers,   // DWORD
        Pointer pCorePrinterDrivers   // CORE_PRINTER_DRIVERW* 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 GetCorePrinterDriversW = GetCorePrinterDriversW(
    pszServer : UInt16*,   # LPCWSTR optional
    pszEnvironment : UInt16*,   # LPCWSTR optional
    pszzCoreDriverDependencies : UInt16*,   # LPCWSTR
    cCorePrinterDrivers : UInt32,   # DWORD
    pCorePrinterDrivers : CORE_PRINTER_DRIVERW*   # CORE_PRINTER_DRIVERW* 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 GetCorePrinterDriversWNative = Int32 Function(Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>, Uint32, Pointer<Void>);
typedef GetCorePrinterDriversWDart = int Function(Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>, int, Pointer<Void>);
final GetCorePrinterDriversW = DynamicLibrary.open('winspool.drv')
    .lookupFunction<GetCorePrinterDriversWNative, GetCorePrinterDriversWDart>('GetCorePrinterDriversW');
// pszServer : LPCWSTR optional -> Pointer<Utf16>
// pszEnvironment : LPCWSTR optional -> Pointer<Utf16>
// pszzCoreDriverDependencies : LPCWSTR -> Pointer<Utf16>
// cCorePrinterDrivers : DWORD -> Uint32
// pCorePrinterDrivers : CORE_PRINTER_DRIVERW* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetCorePrinterDriversW(
  pszServer: PWideChar;   // LPCWSTR optional
  pszEnvironment: PWideChar;   // LPCWSTR optional
  pszzCoreDriverDependencies: PWideChar;   // LPCWSTR
  cCorePrinterDrivers: DWORD;   // DWORD
  pCorePrinterDrivers: Pointer   // CORE_PRINTER_DRIVERW* out
): Integer; stdcall;
  external 'winspool.drv' name 'GetCorePrinterDriversW';

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

foreign import stdcall safe "GetCorePrinterDriversW"
  c_GetCorePrinterDriversW :: CWString -> CWString -> CWString -> Word32 -> Ptr () -> IO Int32
-- pszServer : LPCWSTR optional -> CWString
-- pszEnvironment : LPCWSTR optional -> CWString
-- pszzCoreDriverDependencies : LPCWSTR -> CWString
-- cCorePrinterDrivers : DWORD -> Word32
-- pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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 getcoreprinterdriversw =
  foreign "GetCorePrinterDriversW"
    ((ptr uint16_t) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> uint32_t @-> (ptr void) @-> returning int32_t)
(* pszServer : LPCWSTR optional -> (ptr uint16_t) *)
(* pszEnvironment : LPCWSTR optional -> (ptr uint16_t) *)
(* pszzCoreDriverDependencies : LPCWSTR -> (ptr uint16_t) *)
(* cCorePrinterDrivers : DWORD -> uint32_t *)
(* pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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 ("GetCorePrinterDriversW" get-core-printer-drivers-w :convention :stdcall) :int32
  (psz-server (:string :encoding :utf-16le))   ; LPCWSTR optional
  (psz-environment (:string :encoding :utf-16le))   ; LPCWSTR optional
  (pszz-core-driver-dependencies (:string :encoding :utf-16le))   ; LPCWSTR
  (c-core-printer-drivers :uint32)   ; DWORD
  (p-core-printer-drivers :pointer))   ; CORE_PRINTER_DRIVERW* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetCorePrinterDriversW = Win32::API::More->new('winspool.drv',
    'int GetCorePrinterDriversW(LPCWSTR pszServer, LPCWSTR pszEnvironment, LPCWSTR pszzCoreDriverDependencies, DWORD cCorePrinterDrivers, LPVOID pCorePrinterDrivers)');
# my $ret = $GetCorePrinterDriversW->Call($pszServer, $pszEnvironment, $pszzCoreDriverDependencies, $cCorePrinterDrivers, $pCorePrinterDrivers);
# pszServer : LPCWSTR optional -> LPCWSTR
# pszEnvironment : LPCWSTR optional -> LPCWSTR
# pszzCoreDriverDependencies : LPCWSTR -> LPCWSTR
# cCorePrinterDrivers : DWORD -> DWORD
# pCorePrinterDrivers : CORE_PRINTER_DRIVERW* 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。