EngGradientFill

// GDI32.dll
#include <windows.h>

BOOL EngGradientFill(
    SURFOBJ* psoDest,
    CLIPOBJ* pco,
    XLATEOBJ* pxlo,
    TRIVERTEX* pVertex,
    DWORD nVertex,
    void* pMesh,
    DWORD nMesh,
    RECTL* prclExtents,
    POINTL* pptlDitherOrg,
    DWORD ulMode
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function EngGradientFill(
    psoDest As IntPtr,   ' SURFOBJ* in/out
    pco As IntPtr,   ' CLIPOBJ* in/out
    pxlo As IntPtr,   ' XLATEOBJ* in/out
    pVertex As IntPtr,   ' TRIVERTEX* in/out
    nVertex As UInteger,   ' DWORD
    pMesh As IntPtr,   ' void* in/out
    nMesh As UInteger,   ' DWORD
    prclExtents As IntPtr,   ' RECTL* in/out
    pptlDitherOrg As IntPtr,   ' POINTL* in/out
    ulMode As UInteger   ' DWORD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' psoDest : SURFOBJ* in/out
' pco : CLIPOBJ* in/out
' pxlo : XLATEOBJ* in/out
' pVertex : TRIVERTEX* in/out
' nVertex : DWORD
' pMesh : void* in/out
' nMesh : DWORD
' prclExtents : RECTL* in/out
' pptlDitherOrg : POINTL* in/out
' ulMode : DWORD
Declare PtrSafe Function EngGradientFill Lib "gdi32" ( _
    ByVal psoDest As LongPtr, _
    ByVal pco As LongPtr, _
    ByVal pxlo As LongPtr, _
    ByVal pVertex As LongPtr, _
    ByVal nVertex As Long, _
    ByVal pMesh As LongPtr, _
    ByVal nMesh As Long, _
    ByVal prclExtents As LongPtr, _
    ByVal pptlDitherOrg As LongPtr, _
    ByVal ulMode As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

EngGradientFill = ctypes.windll.gdi32.EngGradientFill
EngGradientFill.restype = wintypes.BOOL
EngGradientFill.argtypes = [
    ctypes.c_void_p,  # psoDest : SURFOBJ* in/out
    ctypes.c_void_p,  # pco : CLIPOBJ* in/out
    ctypes.c_void_p,  # pxlo : XLATEOBJ* in/out
    ctypes.c_void_p,  # pVertex : TRIVERTEX* in/out
    wintypes.DWORD,  # nVertex : DWORD
    ctypes.POINTER(None),  # pMesh : void* in/out
    wintypes.DWORD,  # nMesh : DWORD
    ctypes.c_void_p,  # prclExtents : RECTL* in/out
    ctypes.c_void_p,  # pptlDitherOrg : POINTL* in/out
    wintypes.DWORD,  # ulMode : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
EngGradientFill = Fiddle::Function.new(
  lib['EngGradientFill'],
  [
    Fiddle::TYPE_VOIDP,  # psoDest : SURFOBJ* in/out
    Fiddle::TYPE_VOIDP,  # pco : CLIPOBJ* in/out
    Fiddle::TYPE_VOIDP,  # pxlo : XLATEOBJ* in/out
    Fiddle::TYPE_VOIDP,  # pVertex : TRIVERTEX* in/out
    -Fiddle::TYPE_INT,  # nVertex : DWORD
    Fiddle::TYPE_VOIDP,  # pMesh : void* in/out
    -Fiddle::TYPE_INT,  # nMesh : DWORD
    Fiddle::TYPE_VOIDP,  # prclExtents : RECTL* in/out
    Fiddle::TYPE_VOIDP,  # pptlDitherOrg : POINTL* in/out
    -Fiddle::TYPE_INT,  # ulMode : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn EngGradientFill(
        psoDest: *mut SURFOBJ,  // SURFOBJ* in/out
        pco: *mut CLIPOBJ,  // CLIPOBJ* in/out
        pxlo: *mut XLATEOBJ,  // XLATEOBJ* in/out
        pVertex: *mut TRIVERTEX,  // TRIVERTEX* in/out
        nVertex: u32,  // DWORD
        pMesh: *mut (),  // void* in/out
        nMesh: u32,  // DWORD
        prclExtents: *mut RECTL,  // RECTL* in/out
        pptlDitherOrg: *mut POINTL,  // POINTL* in/out
        ulMode: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll")]
public static extern bool EngGradientFill(IntPtr psoDest, IntPtr pco, IntPtr pxlo, IntPtr pVertex, uint nVertex, IntPtr pMesh, uint nMesh, IntPtr prclExtents, IntPtr pptlDitherOrg, uint ulMode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_EngGradientFill' -Namespace Win32 -PassThru
# $api::EngGradientFill(psoDest, pco, pxlo, pVertex, nVertex, pMesh, nMesh, prclExtents, pptlDitherOrg, ulMode)

#uselib "GDI32.dll"
#func global EngGradientFill "EngGradientFill" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; EngGradientFill varptr(psoDest), varptr(pco), varptr(pxlo), varptr(pVertex), nVertex, pMesh, nMesh, varptr(prclExtents), varptr(pptlDitherOrg), ulMode   ; 戻り値は stat
; psoDest : SURFOBJ* in/out -> "sptr"
; pco : CLIPOBJ* in/out -> "sptr"
; pxlo : XLATEOBJ* in/out -> "sptr"
; pVertex : TRIVERTEX* in/out -> "sptr"
; nVertex : DWORD -> "sptr"
; pMesh : void* in/out -> "sptr"
; nMesh : DWORD -> "sptr"
; prclExtents : RECTL* in/out -> "sptr"
; pptlDitherOrg : POINTL* in/out -> "sptr"
; ulMode : DWORD -> "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。

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

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procEngGradientFill = gdi32.NewProc("EngGradientFill")
)

// psoDest (SURFOBJ* in/out), pco (CLIPOBJ* in/out), pxlo (XLATEOBJ* in/out), pVertex (TRIVERTEX* in/out), nVertex (DWORD), pMesh (void* in/out), nMesh (DWORD), prclExtents (RECTL* in/out), pptlDitherOrg (POINTL* in/out), ulMode (DWORD)
r1, _, err := procEngGradientFill.Call(
	uintptr(psoDest),
	uintptr(pco),
	uintptr(pxlo),
	uintptr(pVertex),
	uintptr(nVertex),
	uintptr(pMesh),
	uintptr(nMesh),
	uintptr(prclExtents),
	uintptr(pptlDitherOrg),
	uintptr(ulMode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EngGradientFill(
  psoDest: Pointer;   // SURFOBJ* in/out
  pco: Pointer;   // CLIPOBJ* in/out
  pxlo: Pointer;   // XLATEOBJ* in/out
  pVertex: Pointer;   // TRIVERTEX* in/out
  nVertex: DWORD;   // DWORD
  pMesh: Pointer;   // void* in/out
  nMesh: DWORD;   // DWORD
  prclExtents: Pointer;   // RECTL* in/out
  pptlDitherOrg: Pointer;   // POINTL* in/out
  ulMode: DWORD   // DWORD
): BOOL; stdcall;
  external 'GDI32.dll' name 'EngGradientFill';

result := DllCall("GDI32\EngGradientFill"
    , "Ptr", psoDest   ; SURFOBJ* in/out
    , "Ptr", pco   ; CLIPOBJ* in/out
    , "Ptr", pxlo   ; XLATEOBJ* in/out
    , "Ptr", pVertex   ; TRIVERTEX* in/out
    , "UInt", nVertex   ; DWORD
    , "Ptr", pMesh   ; void* in/out
    , "UInt", nMesh   ; DWORD
    , "Ptr", prclExtents   ; RECTL* in/out
    , "Ptr", pptlDitherOrg   ; POINTL* in/out
    , "UInt", ulMode   ; DWORD
    , "Int")   ; return: BOOL

●EngGradientFill(psoDest, pco, pxlo, pVertex, nVertex, pMesh, nMesh, prclExtents, pptlDitherOrg, ulMode) = DLL("GDI32.dll", "bool EngGradientFill(void*, void*, void*, void*, dword, void*, dword, void*, void*, dword)")
# 呼び出し: EngGradientFill(psoDest, pco, pxlo, pVertex, nVertex, pMesh, nMesh, prclExtents, pptlDitherOrg, ulMode)
# psoDest : SURFOBJ* in/out -> "void*"
# pco : CLIPOBJ* in/out -> "void*"
# pxlo : XLATEOBJ* in/out -> "void*"
# pVertex : TRIVERTEX* in/out -> "void*"
# nVertex : DWORD -> "dword"
# pMesh : void* in/out -> "void*"
# nMesh : DWORD -> "dword"
# prclExtents : RECTL* in/out -> "void*"
# pptlDitherOrg : POINTL* in/out -> "void*"
# ulMode : DWORD -> "dword"
# 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 "gdi32" fn EngGradientFill(
    psoDest: [*c]SURFOBJ, // SURFOBJ* in/out
    pco: [*c]CLIPOBJ, // CLIPOBJ* in/out
    pxlo: [*c]XLATEOBJ, // XLATEOBJ* in/out
    pVertex: [*c]TRIVERTEX, // TRIVERTEX* in/out
    nVertex: u32, // DWORD
    pMesh: ?*anyopaque, // void* in/out
    nMesh: u32, // DWORD
    prclExtents: [*c]RECTL, // RECTL* in/out
    pptlDitherOrg: [*c]POINTL, // POINTL* in/out
    ulMode: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc EngGradientFill(
    psoDest: ptr SURFOBJ,  # SURFOBJ* in/out
    pco: ptr CLIPOBJ,  # CLIPOBJ* in/out
    pxlo: ptr XLATEOBJ,  # XLATEOBJ* in/out
    pVertex: ptr TRIVERTEX,  # TRIVERTEX* in/out
    nVertex: uint32,  # DWORD
    pMesh: pointer,  # void* in/out
    nMesh: uint32,  # DWORD
    prclExtents: ptr RECTL,  # RECTL* in/out
    pptlDitherOrg: ptr POINTL,  # POINTL* in/out
    ulMode: uint32  # DWORD
): int32 {.importc: "EngGradientFill", stdcall, dynlib: "GDI32.dll".}

pragma(lib, "gdi32");
extern(Windows)
int EngGradientFill(
    SURFOBJ* psoDest,   // SURFOBJ* in/out
    CLIPOBJ* pco,   // CLIPOBJ* in/out
    XLATEOBJ* pxlo,   // XLATEOBJ* in/out
    TRIVERTEX* pVertex,   // TRIVERTEX* in/out
    uint nVertex,   // DWORD
    void* pMesh,   // void* in/out
    uint nMesh,   // DWORD
    RECTL* prclExtents,   // RECTL* in/out
    POINTL* pptlDitherOrg,   // POINTL* in/out
    uint ulMode   // DWORD
);

ccall((:EngGradientFill, "GDI32.dll"), stdcall, Int32,
      (Ptr{SURFOBJ}, Ptr{CLIPOBJ}, Ptr{XLATEOBJ}, Ptr{TRIVERTEX}, UInt32, Ptr{Cvoid}, UInt32, Ptr{RECTL}, Ptr{POINTL}, UInt32),
      psoDest, pco, pxlo, pVertex, nVertex, pMesh, nMesh, prclExtents, pptlDitherOrg, ulMode)
# psoDest : SURFOBJ* in/out -> Ptr{SURFOBJ}
# pco : CLIPOBJ* in/out -> Ptr{CLIPOBJ}
# pxlo : XLATEOBJ* in/out -> Ptr{XLATEOBJ}
# pVertex : TRIVERTEX* in/out -> Ptr{TRIVERTEX}
# nVertex : DWORD -> UInt32
# pMesh : void* in/out -> Ptr{Cvoid}
# nMesh : DWORD -> UInt32
# prclExtents : RECTL* in/out -> Ptr{RECTL}
# pptlDitherOrg : POINTL* in/out -> Ptr{POINTL}
# ulMode : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t EngGradientFill(
    void* psoDest,
    void* pco,
    void* pxlo,
    void* pVertex,
    uint32_t nVertex,
    void* pMesh,
    uint32_t nMesh,
    void* prclExtents,
    void* pptlDitherOrg,
    uint32_t ulMode);
]]
local gdi32 = ffi.load("gdi32")
-- gdi32.EngGradientFill(psoDest, pco, pxlo, pVertex, nVertex, pMesh, nMesh, prclExtents, pptlDitherOrg, ulMode)
-- psoDest : SURFOBJ* in/out
-- pco : CLIPOBJ* in/out
-- pxlo : XLATEOBJ* in/out
-- pVertex : TRIVERTEX* in/out
-- nVertex : DWORD
-- pMesh : void* in/out
-- nMesh : DWORD
-- prclExtents : RECTL* in/out
-- pptlDitherOrg : POINTL* in/out
-- ulMode : DWORD
-- 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('GDI32.dll');
const EngGradientFill = lib.func('__stdcall', 'EngGradientFill', 'int32_t', ['void *', 'void *', 'void *', 'void *', 'uint32_t', 'void *', 'uint32_t', 'void *', 'void *', 'uint32_t']);
// EngGradientFill(psoDest, pco, pxlo, pVertex, nVertex, pMesh, nMesh, prclExtents, pptlDitherOrg, ulMode)
// psoDest : SURFOBJ* in/out -> 'void *'
// pco : CLIPOBJ* in/out -> 'void *'
// pxlo : XLATEOBJ* in/out -> 'void *'
// pVertex : TRIVERTEX* in/out -> 'void *'
// nVertex : DWORD -> 'uint32_t'
// pMesh : void* in/out -> 'void *'
// nMesh : DWORD -> 'uint32_t'
// prclExtents : RECTL* in/out -> 'void *'
// pptlDitherOrg : POINTL* in/out -> 'void *'
// ulMode : DWORD -> '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("GDI32.dll", {
  EngGradientFill: { parameters: ["pointer", "pointer", "pointer", "pointer", "u32", "pointer", "u32", "pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.EngGradientFill(psoDest, pco, pxlo, pVertex, nVertex, pMesh, nMesh, prclExtents, pptlDitherOrg, ulMode)
// psoDest : SURFOBJ* in/out -> "pointer"
// pco : CLIPOBJ* in/out -> "pointer"
// pxlo : XLATEOBJ* in/out -> "pointer"
// pVertex : TRIVERTEX* in/out -> "pointer"
// nVertex : DWORD -> "u32"
// pMesh : void* in/out -> "pointer"
// nMesh : DWORD -> "u32"
// prclExtents : RECTL* in/out -> "pointer"
// pptlDitherOrg : POINTL* in/out -> "pointer"
// ulMode : DWORD -> "u32"
// 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 EngGradientFill(
    void* psoDest,
    void* pco,
    void* pxlo,
    void* pVertex,
    uint32_t nVertex,
    void* pMesh,
    uint32_t nMesh,
    void* prclExtents,
    void* pptlDitherOrg,
    uint32_t ulMode);
C, "GDI32.dll");
// $ffi->EngGradientFill(psoDest, pco, pxlo, pVertex, nVertex, pMesh, nMesh, prclExtents, pptlDitherOrg, ulMode);
// psoDest : SURFOBJ* in/out
// pco : CLIPOBJ* in/out
// pxlo : XLATEOBJ* in/out
// pVertex : TRIVERTEX* in/out
// nVertex : DWORD
// pMesh : void* in/out
// nMesh : DWORD
// prclExtents : RECTL* in/out
// pptlDitherOrg : POINTL* in/out
// ulMode : DWORD
// 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 Gdi32 extends StdCallLibrary {
    Gdi32 INSTANCE = Native.load("gdi32", Gdi32.class);
    boolean EngGradientFill(
        Pointer psoDest,   // SURFOBJ* in/out
        Pointer pco,   // CLIPOBJ* in/out
        Pointer pxlo,   // XLATEOBJ* in/out
        Pointer pVertex,   // TRIVERTEX* in/out
        int nVertex,   // DWORD
        Pointer pMesh,   // void* in/out
        int nMesh,   // DWORD
        Pointer prclExtents,   // RECTL* in/out
        Pointer pptlDitherOrg,   // POINTL* in/out
        int ulMode   // DWORD
    );
}

@[Link("gdi32")]
lib LibGDI32
  fun EngGradientFill = EngGradientFill(
    psoDest : SURFOBJ*,   # SURFOBJ* in/out
    pco : CLIPOBJ*,   # CLIPOBJ* in/out
    pxlo : XLATEOBJ*,   # XLATEOBJ* in/out
    pVertex : TRIVERTEX*,   # TRIVERTEX* in/out
    nVertex : UInt32,   # DWORD
    pMesh : Void*,   # void* in/out
    nMesh : UInt32,   # DWORD
    prclExtents : RECTL*,   # RECTL* in/out
    pptlDitherOrg : POINTL*,   # POINTL* in/out
    ulMode : UInt32   # DWORD
  ) : 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 EngGradientFillNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>, Uint32, Pointer<Void>, Uint32, Pointer<Void>, Pointer<Void>, Uint32);
typedef EngGradientFillDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>, int, Pointer<Void>, int, Pointer<Void>, Pointer<Void>, int);
final EngGradientFill = DynamicLibrary.open('GDI32.dll')
    .lookupFunction<EngGradientFillNative, EngGradientFillDart>('EngGradientFill');
// psoDest : SURFOBJ* in/out -> Pointer<Void>
// pco : CLIPOBJ* in/out -> Pointer<Void>
// pxlo : XLATEOBJ* in/out -> Pointer<Void>
// pVertex : TRIVERTEX* in/out -> Pointer<Void>
// nVertex : DWORD -> Uint32
// pMesh : void* in/out -> Pointer<Void>
// nMesh : DWORD -> Uint32
// prclExtents : RECTL* in/out -> Pointer<Void>
// pptlDitherOrg : POINTL* in/out -> Pointer<Void>
// ulMode : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function EngGradientFill(
  psoDest: Pointer;   // SURFOBJ* in/out
  pco: Pointer;   // CLIPOBJ* in/out
  pxlo: Pointer;   // XLATEOBJ* in/out
  pVertex: Pointer;   // TRIVERTEX* in/out
  nVertex: DWORD;   // DWORD
  pMesh: Pointer;   // void* in/out
  nMesh: DWORD;   // DWORD
  prclExtents: Pointer;   // RECTL* in/out
  pptlDitherOrg: Pointer;   // POINTL* in/out
  ulMode: DWORD   // DWORD
): BOOL; stdcall;
  external 'GDI32.dll' name 'EngGradientFill';

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

foreign import stdcall safe "EngGradientFill"
  c_EngGradientFill :: Ptr () -> Ptr () -> Ptr () -> Ptr () -> Word32 -> Ptr () -> Word32 -> Ptr () -> Ptr () -> Word32 -> IO CInt
-- psoDest : SURFOBJ* in/out -> Ptr ()
-- pco : CLIPOBJ* in/out -> Ptr ()
-- pxlo : XLATEOBJ* in/out -> Ptr ()
-- pVertex : TRIVERTEX* in/out -> Ptr ()
-- nVertex : DWORD -> Word32
-- pMesh : void* in/out -> Ptr ()
-- nMesh : DWORD -> Word32
-- prclExtents : RECTL* in/out -> Ptr ()
-- pptlDitherOrg : POINTL* in/out -> Ptr ()
-- ulMode : DWORD -> 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 enggradientfill =
  foreign "EngGradientFill"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> (ptr void) @-> uint32_t @-> (ptr void) @-> uint32_t @-> (ptr void) @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* psoDest : SURFOBJ* in/out -> (ptr void) *)
(* pco : CLIPOBJ* in/out -> (ptr void) *)
(* pxlo : XLATEOBJ* in/out -> (ptr void) *)
(* pVertex : TRIVERTEX* in/out -> (ptr void) *)
(* nVertex : DWORD -> uint32_t *)
(* pMesh : void* in/out -> (ptr void) *)
(* nMesh : DWORD -> uint32_t *)
(* prclExtents : RECTL* in/out -> (ptr void) *)
(* pptlDitherOrg : POINTL* in/out -> (ptr void) *)
(* ulMode : DWORD -> 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 gdi32 (t "GDI32.dll"))
(cffi:use-foreign-library gdi32)

(cffi:defcfun ("EngGradientFill" eng-gradient-fill :convention :stdcall) :int32
  (pso-dest :pointer)   ; SURFOBJ* in/out
  (pco :pointer)   ; CLIPOBJ* in/out
  (pxlo :pointer)   ; XLATEOBJ* in/out
  (p-vertex :pointer)   ; TRIVERTEX* in/out
  (n-vertex :uint32)   ; DWORD
  (p-mesh :pointer)   ; void* in/out
  (n-mesh :uint32)   ; DWORD
  (prcl-extents :pointer)   ; RECTL* in/out
  (pptl-dither-org :pointer)   ; POINTL* in/out
  (ul-mode :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $EngGradientFill = Win32::API::More->new('GDI32',
    'BOOL EngGradientFill(LPVOID psoDest, LPVOID pco, LPVOID pxlo, LPVOID pVertex, DWORD nVertex, LPVOID pMesh, DWORD nMesh, LPVOID prclExtents, LPVOID pptlDitherOrg, DWORD ulMode)');
# my $ret = $EngGradientFill->Call($psoDest, $pco, $pxlo, $pVertex, $nVertex, $pMesh, $nMesh, $prclExtents, $pptlDitherOrg, $ulMode);
# psoDest : SURFOBJ* in/out -> LPVOID
# pco : CLIPOBJ* in/out -> LPVOID
# pxlo : XLATEOBJ* in/out -> LPVOID
# pVertex : TRIVERTEX* in/out -> LPVOID
# nVertex : DWORD -> DWORD
# pMesh : void* in/out -> LPVOID
# nMesh : DWORD -> DWORD
# prclExtents : RECTL* in/out -> LPVOID
# pptlDitherOrg : POINTL* in/out -> LPVOID
# ulMode : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。