EngCreatePalette

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

HPALETTE EngCreatePalette(
    DWORD iMode,
    DWORD cColors,
    DWORD* pulColors,
    DWORD flRed,
    DWORD flGreen,
    DWORD flBlue
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function EngCreatePalette(
    iMode As UInteger,   ' DWORD
    cColors As UInteger,   ' DWORD
    ByRef pulColors As UInteger,   ' DWORD* in/out
    flRed As UInteger,   ' DWORD
    flGreen As UInteger,   ' DWORD
    flBlue As UInteger   ' DWORD
) As IntPtr
End Function

' iMode : DWORD
' cColors : DWORD
' pulColors : DWORD* in/out
' flRed : DWORD
' flGreen : DWORD
' flBlue : DWORD
Declare PtrSafe Function EngCreatePalette Lib "gdi32" ( _
    ByVal iMode As Long, _
    ByVal cColors As Long, _
    ByRef pulColors As Long, _
    ByVal flRed As Long, _
    ByVal flGreen As Long, _
    ByVal flBlue As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

EngCreatePalette = ctypes.windll.gdi32.EngCreatePalette
EngCreatePalette.restype = ctypes.c_void_p
EngCreatePalette.argtypes = [
    wintypes.DWORD,  # iMode : DWORD
    wintypes.DWORD,  # cColors : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pulColors : DWORD* in/out
    wintypes.DWORD,  # flRed : DWORD
    wintypes.DWORD,  # flGreen : DWORD
    wintypes.DWORD,  # flBlue : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
EngCreatePalette = Fiddle::Function.new(
  lib['EngCreatePalette'],
  [
    -Fiddle::TYPE_INT,  # iMode : DWORD
    -Fiddle::TYPE_INT,  # cColors : DWORD
    Fiddle::TYPE_VOIDP,  # pulColors : DWORD* in/out
    -Fiddle::TYPE_INT,  # flRed : DWORD
    -Fiddle::TYPE_INT,  # flGreen : DWORD
    -Fiddle::TYPE_INT,  # flBlue : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "gdi32")]
extern "system" {
    fn EngCreatePalette(
        iMode: u32,  // DWORD
        cColors: u32,  // DWORD
        pulColors: *mut u32,  // DWORD* in/out
        flRed: u32,  // DWORD
        flGreen: u32,  // DWORD
        flBlue: u32  // DWORD
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GDI32.dll")]
public static extern IntPtr EngCreatePalette(uint iMode, uint cColors, ref uint pulColors, uint flRed, uint flGreen, uint flBlue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_EngCreatePalette' -Namespace Win32 -PassThru
# $api::EngCreatePalette(iMode, cColors, pulColors, flRed, flGreen, flBlue)

#uselib "GDI32.dll"
#func global EngCreatePalette "EngCreatePalette" sptr, sptr, sptr, sptr, sptr, sptr
; EngCreatePalette iMode, cColors, varptr(pulColors), flRed, flGreen, flBlue   ; 戻り値は stat
; iMode : DWORD -> "sptr"
; cColors : DWORD -> "sptr"
; pulColors : DWORD* in/out -> "sptr"
; flRed : DWORD -> "sptr"
; flGreen : DWORD -> "sptr"
; flBlue : 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")
	procEngCreatePalette = gdi32.NewProc("EngCreatePalette")
)

// iMode (DWORD), cColors (DWORD), pulColors (DWORD* in/out), flRed (DWORD), flGreen (DWORD), flBlue (DWORD)
r1, _, err := procEngCreatePalette.Call(
	uintptr(iMode),
	uintptr(cColors),
	uintptr(pulColors),
	uintptr(flRed),
	uintptr(flGreen),
	uintptr(flBlue),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HPALETTE

function EngCreatePalette(
  iMode: DWORD;   // DWORD
  cColors: DWORD;   // DWORD
  pulColors: Pointer;   // DWORD* in/out
  flRed: DWORD;   // DWORD
  flGreen: DWORD;   // DWORD
  flBlue: DWORD   // DWORD
): THandle; stdcall;
  external 'GDI32.dll' name 'EngCreatePalette';

result := DllCall("GDI32\EngCreatePalette"
    , "UInt", iMode   ; DWORD
    , "UInt", cColors   ; DWORD
    , "Ptr", pulColors   ; DWORD* in/out
    , "UInt", flRed   ; DWORD
    , "UInt", flGreen   ; DWORD
    , "UInt", flBlue   ; DWORD
    , "Ptr")   ; return: HPALETTE

●EngCreatePalette(iMode, cColors, pulColors, flRed, flGreen, flBlue) = DLL("GDI32.dll", "void* EngCreatePalette(dword, dword, void*, dword, dword, dword)")
# 呼び出し: EngCreatePalette(iMode, cColors, pulColors, flRed, flGreen, flBlue)
# iMode : DWORD -> "dword"
# cColors : DWORD -> "dword"
# pulColors : DWORD* in/out -> "void*"
# flRed : DWORD -> "dword"
# flGreen : DWORD -> "dword"
# flBlue : 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 EngCreatePalette(
    iMode: u32, // DWORD
    cColors: u32, // DWORD
    pulColors: [*c]u32, // DWORD* in/out
    flRed: u32, // DWORD
    flGreen: u32, // DWORD
    flBlue: u32 // DWORD
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc EngCreatePalette(
    iMode: uint32,  # DWORD
    cColors: uint32,  # DWORD
    pulColors: ptr uint32,  # DWORD* in/out
    flRed: uint32,  # DWORD
    flGreen: uint32,  # DWORD
    flBlue: uint32  # DWORD
): pointer {.importc: "EngCreatePalette", stdcall, dynlib: "GDI32.dll".}

pragma(lib, "gdi32");
extern(Windows)
void* EngCreatePalette(
    uint iMode,   // DWORD
    uint cColors,   // DWORD
    uint* pulColors,   // DWORD* in/out
    uint flRed,   // DWORD
    uint flGreen,   // DWORD
    uint flBlue   // DWORD
);

ccall((:EngCreatePalette, "GDI32.dll"), stdcall, Ptr{Cvoid},
      (UInt32, UInt32, Ptr{UInt32}, UInt32, UInt32, UInt32),
      iMode, cColors, pulColors, flRed, flGreen, flBlue)
# iMode : DWORD -> UInt32
# cColors : DWORD -> UInt32
# pulColors : DWORD* in/out -> Ptr{UInt32}
# flRed : DWORD -> UInt32
# flGreen : DWORD -> UInt32
# flBlue : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* EngCreatePalette(
    uint32_t iMode,
    uint32_t cColors,
    uint32_t* pulColors,
    uint32_t flRed,
    uint32_t flGreen,
    uint32_t flBlue);
]]
local gdi32 = ffi.load("gdi32")
-- gdi32.EngCreatePalette(iMode, cColors, pulColors, flRed, flGreen, flBlue)
-- iMode : DWORD
-- cColors : DWORD
-- pulColors : DWORD* in/out
-- flRed : DWORD
-- flGreen : DWORD
-- flBlue : 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 EngCreatePalette = lib.func('__stdcall', 'EngCreatePalette', 'void *', ['uint32_t', 'uint32_t', 'uint32_t *', 'uint32_t', 'uint32_t', 'uint32_t']);
// EngCreatePalette(iMode, cColors, pulColors, flRed, flGreen, flBlue)
// iMode : DWORD -> 'uint32_t'
// cColors : DWORD -> 'uint32_t'
// pulColors : DWORD* in/out -> 'uint32_t *'
// flRed : DWORD -> 'uint32_t'
// flGreen : DWORD -> 'uint32_t'
// flBlue : 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", {
  EngCreatePalette: { parameters: ["u32", "u32", "pointer", "u32", "u32", "u32"], result: "pointer" },
});
// lib.symbols.EngCreatePalette(iMode, cColors, pulColors, flRed, flGreen, flBlue)
// iMode : DWORD -> "u32"
// cColors : DWORD -> "u32"
// pulColors : DWORD* in/out -> "pointer"
// flRed : DWORD -> "u32"
// flGreen : DWORD -> "u32"
// flBlue : 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
void* EngCreatePalette(
    uint32_t iMode,
    uint32_t cColors,
    uint32_t* pulColors,
    uint32_t flRed,
    uint32_t flGreen,
    uint32_t flBlue);
C, "GDI32.dll");
// $ffi->EngCreatePalette(iMode, cColors, pulColors, flRed, flGreen, flBlue);
// iMode : DWORD
// cColors : DWORD
// pulColors : DWORD* in/out
// flRed : DWORD
// flGreen : DWORD
// flBlue : 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);
    Pointer EngCreatePalette(
        int iMode,   // DWORD
        int cColors,   // DWORD
        IntByReference pulColors,   // DWORD* in/out
        int flRed,   // DWORD
        int flGreen,   // DWORD
        int flBlue   // DWORD
    );
}

@[Link("gdi32")]
lib LibGDI32
  fun EngCreatePalette = EngCreatePalette(
    iMode : UInt32,   # DWORD
    cColors : UInt32,   # DWORD
    pulColors : UInt32*,   # DWORD* in/out
    flRed : UInt32,   # DWORD
    flGreen : UInt32,   # DWORD
    flBlue : UInt32   # DWORD
  ) : Void*
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 EngCreatePaletteNative = Pointer<Void> Function(Uint32, Uint32, Pointer<Uint32>, Uint32, Uint32, Uint32);
typedef EngCreatePaletteDart = Pointer<Void> Function(int, int, Pointer<Uint32>, int, int, int);
final EngCreatePalette = DynamicLibrary.open('GDI32.dll')
    .lookupFunction<EngCreatePaletteNative, EngCreatePaletteDart>('EngCreatePalette');
// iMode : DWORD -> Uint32
// cColors : DWORD -> Uint32
// pulColors : DWORD* in/out -> Pointer<Uint32>
// flRed : DWORD -> Uint32
// flGreen : DWORD -> Uint32
// flBlue : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function EngCreatePalette(
  iMode: DWORD;   // DWORD
  cColors: DWORD;   // DWORD
  pulColors: Pointer;   // DWORD* in/out
  flRed: DWORD;   // DWORD
  flGreen: DWORD;   // DWORD
  flBlue: DWORD   // DWORD
): THandle; stdcall;
  external 'GDI32.dll' name 'EngCreatePalette';

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

foreign import stdcall safe "EngCreatePalette"
  c_EngCreatePalette :: Word32 -> Word32 -> Ptr Word32 -> Word32 -> Word32 -> Word32 -> IO (Ptr ())
-- iMode : DWORD -> Word32
-- cColors : DWORD -> Word32
-- pulColors : DWORD* in/out -> Ptr Word32
-- flRed : DWORD -> Word32
-- flGreen : DWORD -> Word32
-- flBlue : 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 engcreatepalette =
  foreign "EngCreatePalette"
    (uint32_t @-> uint32_t @-> (ptr uint32_t) @-> uint32_t @-> uint32_t @-> uint32_t @-> returning (ptr void))
(* iMode : DWORD -> uint32_t *)
(* cColors : DWORD -> uint32_t *)
(* pulColors : DWORD* in/out -> (ptr uint32_t) *)
(* flRed : DWORD -> uint32_t *)
(* flGreen : DWORD -> uint32_t *)
(* flBlue : 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 ("EngCreatePalette" eng-create-palette :convention :stdcall) :pointer
  (i-mode :uint32)   ; DWORD
  (c-colors :uint32)   ; DWORD
  (pul-colors :pointer)   ; DWORD* in/out
  (fl-red :uint32)   ; DWORD
  (fl-green :uint32)   ; DWORD
  (fl-blue :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $EngCreatePalette = Win32::API::More->new('GDI32',
    'HANDLE EngCreatePalette(DWORD iMode, DWORD cColors, LPVOID pulColors, DWORD flRed, DWORD flGreen, DWORD flBlue)');
# my $ret = $EngCreatePalette->Call($iMode, $cColors, $pulColors, $flRed, $flGreen, $flBlue);
# iMode : DWORD -> DWORD
# cColors : DWORD -> DWORD
# pulColors : DWORD* in/out -> LPVOID
# flRed : DWORD -> DWORD
# flGreen : DWORD -> DWORD
# flBlue : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。