SetDisplayConfig

// USER32.dll
#include <windows.h>

INT SetDisplayConfig(
    DWORD numPathArrayElements,
    DISPLAYCONFIG_PATH_INFO* pathArray,   // optional
    DWORD numModeInfoArrayElements,
    DISPLAYCONFIG_MODE_INFO* modeInfoArray,   // optional
    SET_DISPLAY_CONFIG_FLAGS flags
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function SetDisplayConfig(
    numPathArrayElements As UInteger,   ' DWORD
    pathArray As IntPtr,   ' DISPLAYCONFIG_PATH_INFO* optional
    numModeInfoArrayElements As UInteger,   ' DWORD
    modeInfoArray As IntPtr,   ' DISPLAYCONFIG_MODE_INFO* optional
    flags As UInteger   ' SET_DISPLAY_CONFIG_FLAGS
) As Integer
End Function

' numPathArrayElements : DWORD
' pathArray : DISPLAYCONFIG_PATH_INFO* optional
' numModeInfoArrayElements : DWORD
' modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional
' flags : SET_DISPLAY_CONFIG_FLAGS
Declare PtrSafe Function SetDisplayConfig Lib "user32" ( _
    ByVal numPathArrayElements As Long, _
    ByVal pathArray As LongPtr, _
    ByVal numModeInfoArrayElements As Long, _
    ByVal modeInfoArray As LongPtr, _
    ByVal flags 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

SetDisplayConfig = ctypes.windll.user32.SetDisplayConfig
SetDisplayConfig.restype = ctypes.c_int
SetDisplayConfig.argtypes = [
    wintypes.DWORD,  # numPathArrayElements : DWORD
    ctypes.c_void_p,  # pathArray : DISPLAYCONFIG_PATH_INFO* optional
    wintypes.DWORD,  # numModeInfoArrayElements : DWORD
    ctypes.c_void_p,  # modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional
    wintypes.DWORD,  # flags : SET_DISPLAY_CONFIG_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
SetDisplayConfig = Fiddle::Function.new(
  lib['SetDisplayConfig'],
  [
    -Fiddle::TYPE_INT,  # numPathArrayElements : DWORD
    Fiddle::TYPE_VOIDP,  # pathArray : DISPLAYCONFIG_PATH_INFO* optional
    -Fiddle::TYPE_INT,  # numModeInfoArrayElements : DWORD
    Fiddle::TYPE_VOIDP,  # modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional
    -Fiddle::TYPE_INT,  # flags : SET_DISPLAY_CONFIG_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn SetDisplayConfig(
        numPathArrayElements: u32,  // DWORD
        pathArray: *mut DISPLAYCONFIG_PATH_INFO,  // DISPLAYCONFIG_PATH_INFO* optional
        numModeInfoArrayElements: u32,  // DWORD
        modeInfoArray: *mut DISPLAYCONFIG_MODE_INFO,  // DISPLAYCONFIG_MODE_INFO* optional
        flags: u32  // SET_DISPLAY_CONFIG_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll")]
public static extern int SetDisplayConfig(uint numPathArrayElements, IntPtr pathArray, uint numModeInfoArrayElements, IntPtr modeInfoArray, uint flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_SetDisplayConfig' -Namespace Win32 -PassThru
# $api::SetDisplayConfig(numPathArrayElements, pathArray, numModeInfoArrayElements, modeInfoArray, flags)

#uselib "USER32.dll"
#func global SetDisplayConfig "SetDisplayConfig" sptr, sptr, sptr, sptr, sptr
; SetDisplayConfig numPathArrayElements, varptr(pathArray), numModeInfoArrayElements, varptr(modeInfoArray), flags   ; 戻り値は stat
; numPathArrayElements : DWORD -> "sptr"
; pathArray : DISPLAYCONFIG_PATH_INFO* optional -> "sptr"
; numModeInfoArrayElements : DWORD -> "sptr"
; modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> "sptr"
; flags : SET_DISPLAY_CONFIG_FLAGS -> "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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procSetDisplayConfig = user32.NewProc("SetDisplayConfig")
)

// numPathArrayElements (DWORD), pathArray (DISPLAYCONFIG_PATH_INFO* optional), numModeInfoArrayElements (DWORD), modeInfoArray (DISPLAYCONFIG_MODE_INFO* optional), flags (SET_DISPLAY_CONFIG_FLAGS)
r1, _, err := procSetDisplayConfig.Call(
	uintptr(numPathArrayElements),
	uintptr(pathArray),
	uintptr(numModeInfoArrayElements),
	uintptr(modeInfoArray),
	uintptr(flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SetDisplayConfig(
  numPathArrayElements: DWORD;   // DWORD
  pathArray: Pointer;   // DISPLAYCONFIG_PATH_INFO* optional
  numModeInfoArrayElements: DWORD;   // DWORD
  modeInfoArray: Pointer;   // DISPLAYCONFIG_MODE_INFO* optional
  flags: DWORD   // SET_DISPLAY_CONFIG_FLAGS
): Integer; stdcall;
  external 'USER32.dll' name 'SetDisplayConfig';

result := DllCall("USER32\SetDisplayConfig"
    , "UInt", numPathArrayElements   ; DWORD
    , "Ptr", pathArray   ; DISPLAYCONFIG_PATH_INFO* optional
    , "UInt", numModeInfoArrayElements   ; DWORD
    , "Ptr", modeInfoArray   ; DISPLAYCONFIG_MODE_INFO* optional
    , "UInt", flags   ; SET_DISPLAY_CONFIG_FLAGS
    , "Int")   ; return: INT

●SetDisplayConfig(numPathArrayElements, pathArray, numModeInfoArrayElements, modeInfoArray, flags) = DLL("USER32.dll", "int SetDisplayConfig(dword, void*, dword, void*, dword)")
# 呼び出し: SetDisplayConfig(numPathArrayElements, pathArray, numModeInfoArrayElements, modeInfoArray, flags)
# numPathArrayElements : DWORD -> "dword"
# pathArray : DISPLAYCONFIG_PATH_INFO* optional -> "void*"
# numModeInfoArrayElements : DWORD -> "dword"
# modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> "void*"
# flags : SET_DISPLAY_CONFIG_FLAGS -> "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 "user32" fn SetDisplayConfig(
    numPathArrayElements: u32, // DWORD
    pathArray: [*c]DISPLAYCONFIG_PATH_INFO, // DISPLAYCONFIG_PATH_INFO* optional
    numModeInfoArrayElements: u32, // DWORD
    modeInfoArray: [*c]DISPLAYCONFIG_MODE_INFO, // DISPLAYCONFIG_MODE_INFO* optional
    flags: u32 // SET_DISPLAY_CONFIG_FLAGS
) callconv(std.os.windows.WINAPI) i32;

proc SetDisplayConfig(
    numPathArrayElements: uint32,  # DWORD
    pathArray: ptr DISPLAYCONFIG_PATH_INFO,  # DISPLAYCONFIG_PATH_INFO* optional
    numModeInfoArrayElements: uint32,  # DWORD
    modeInfoArray: ptr DISPLAYCONFIG_MODE_INFO,  # DISPLAYCONFIG_MODE_INFO* optional
    flags: uint32  # SET_DISPLAY_CONFIG_FLAGS
): int32 {.importc: "SetDisplayConfig", stdcall, dynlib: "USER32.dll".}

pragma(lib, "user32");
extern(Windows)
int SetDisplayConfig(
    uint numPathArrayElements,   // DWORD
    DISPLAYCONFIG_PATH_INFO* pathArray,   // DISPLAYCONFIG_PATH_INFO* optional
    uint numModeInfoArrayElements,   // DWORD
    DISPLAYCONFIG_MODE_INFO* modeInfoArray,   // DISPLAYCONFIG_MODE_INFO* optional
    uint flags   // SET_DISPLAY_CONFIG_FLAGS
);

ccall((:SetDisplayConfig, "USER32.dll"), stdcall, Int32,
      (UInt32, Ptr{DISPLAYCONFIG_PATH_INFO}, UInt32, Ptr{DISPLAYCONFIG_MODE_INFO}, UInt32),
      numPathArrayElements, pathArray, numModeInfoArrayElements, modeInfoArray, flags)
# numPathArrayElements : DWORD -> UInt32
# pathArray : DISPLAYCONFIG_PATH_INFO* optional -> Ptr{DISPLAYCONFIG_PATH_INFO}
# numModeInfoArrayElements : DWORD -> UInt32
# modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> Ptr{DISPLAYCONFIG_MODE_INFO}
# flags : SET_DISPLAY_CONFIG_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SetDisplayConfig(
    uint32_t numPathArrayElements,
    void* pathArray,
    uint32_t numModeInfoArrayElements,
    void* modeInfoArray,
    uint32_t flags);
]]
local user32 = ffi.load("user32")
-- user32.SetDisplayConfig(numPathArrayElements, pathArray, numModeInfoArrayElements, modeInfoArray, flags)
-- numPathArrayElements : DWORD
-- pathArray : DISPLAYCONFIG_PATH_INFO* optional
-- numModeInfoArrayElements : DWORD
-- modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional
-- flags : SET_DISPLAY_CONFIG_FLAGS
-- 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('USER32.dll');
const SetDisplayConfig = lib.func('__stdcall', 'SetDisplayConfig', 'int32_t', ['uint32_t', 'void *', 'uint32_t', 'void *', 'uint32_t']);
// SetDisplayConfig(numPathArrayElements, pathArray, numModeInfoArrayElements, modeInfoArray, flags)
// numPathArrayElements : DWORD -> 'uint32_t'
// pathArray : DISPLAYCONFIG_PATH_INFO* optional -> 'void *'
// numModeInfoArrayElements : DWORD -> 'uint32_t'
// modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> 'void *'
// flags : SET_DISPLAY_CONFIG_FLAGS -> '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("USER32.dll", {
  SetDisplayConfig: { parameters: ["u32", "pointer", "u32", "pointer", "u32"], result: "i32" },
});
// lib.symbols.SetDisplayConfig(numPathArrayElements, pathArray, numModeInfoArrayElements, modeInfoArray, flags)
// numPathArrayElements : DWORD -> "u32"
// pathArray : DISPLAYCONFIG_PATH_INFO* optional -> "pointer"
// numModeInfoArrayElements : DWORD -> "u32"
// modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> "pointer"
// flags : SET_DISPLAY_CONFIG_FLAGS -> "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 SetDisplayConfig(
    uint32_t numPathArrayElements,
    void* pathArray,
    uint32_t numModeInfoArrayElements,
    void* modeInfoArray,
    uint32_t flags);
C, "USER32.dll");
// $ffi->SetDisplayConfig(numPathArrayElements, pathArray, numModeInfoArrayElements, modeInfoArray, flags);
// numPathArrayElements : DWORD
// pathArray : DISPLAYCONFIG_PATH_INFO* optional
// numModeInfoArrayElements : DWORD
// modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional
// flags : SET_DISPLAY_CONFIG_FLAGS
// 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 User32 extends StdCallLibrary {
    User32 INSTANCE = Native.load("user32", User32.class);
    int SetDisplayConfig(
        int numPathArrayElements,   // DWORD
        Pointer pathArray,   // DISPLAYCONFIG_PATH_INFO* optional
        int numModeInfoArrayElements,   // DWORD
        Pointer modeInfoArray,   // DISPLAYCONFIG_MODE_INFO* optional
        int flags   // SET_DISPLAY_CONFIG_FLAGS
    );
}

@[Link("user32")]
lib LibUSER32
  fun SetDisplayConfig = SetDisplayConfig(
    numPathArrayElements : UInt32,   # DWORD
    pathArray : DISPLAYCONFIG_PATH_INFO*,   # DISPLAYCONFIG_PATH_INFO* optional
    numModeInfoArrayElements : UInt32,   # DWORD
    modeInfoArray : DISPLAYCONFIG_MODE_INFO*,   # DISPLAYCONFIG_MODE_INFO* optional
    flags : UInt32   # SET_DISPLAY_CONFIG_FLAGS
  ) : 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 SetDisplayConfigNative = Int32 Function(Uint32, Pointer<Void>, Uint32, Pointer<Void>, Uint32);
typedef SetDisplayConfigDart = int Function(int, Pointer<Void>, int, Pointer<Void>, int);
final SetDisplayConfig = DynamicLibrary.open('USER32.dll')
    .lookupFunction<SetDisplayConfigNative, SetDisplayConfigDart>('SetDisplayConfig');
// numPathArrayElements : DWORD -> Uint32
// pathArray : DISPLAYCONFIG_PATH_INFO* optional -> Pointer<Void>
// numModeInfoArrayElements : DWORD -> Uint32
// modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> Pointer<Void>
// flags : SET_DISPLAY_CONFIG_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SetDisplayConfig(
  numPathArrayElements: DWORD;   // DWORD
  pathArray: Pointer;   // DISPLAYCONFIG_PATH_INFO* optional
  numModeInfoArrayElements: DWORD;   // DWORD
  modeInfoArray: Pointer;   // DISPLAYCONFIG_MODE_INFO* optional
  flags: DWORD   // SET_DISPLAY_CONFIG_FLAGS
): Integer; stdcall;
  external 'USER32.dll' name 'SetDisplayConfig';

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

foreign import stdcall safe "SetDisplayConfig"
  c_SetDisplayConfig :: Word32 -> Ptr () -> Word32 -> Ptr () -> Word32 -> IO Int32
-- numPathArrayElements : DWORD -> Word32
-- pathArray : DISPLAYCONFIG_PATH_INFO* optional -> Ptr ()
-- numModeInfoArrayElements : DWORD -> Word32
-- modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> Ptr ()
-- flags : SET_DISPLAY_CONFIG_FLAGS -> 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 setdisplayconfig =
  foreign "SetDisplayConfig"
    (uint32_t @-> (ptr void) @-> uint32_t @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* numPathArrayElements : DWORD -> uint32_t *)
(* pathArray : DISPLAYCONFIG_PATH_INFO* optional -> (ptr void) *)
(* numModeInfoArrayElements : DWORD -> uint32_t *)
(* modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> (ptr void) *)
(* flags : SET_DISPLAY_CONFIG_FLAGS -> 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 user32 (t "USER32.dll"))
(cffi:use-foreign-library user32)

(cffi:defcfun ("SetDisplayConfig" set-display-config :convention :stdcall) :int32
  (num-path-array-elements :uint32)   ; DWORD
  (path-array :pointer)   ; DISPLAYCONFIG_PATH_INFO* optional
  (num-mode-info-array-elements :uint32)   ; DWORD
  (mode-info-array :pointer)   ; DISPLAYCONFIG_MODE_INFO* optional
  (flags :uint32))   ; SET_DISPLAY_CONFIG_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SetDisplayConfig = Win32::API::More->new('USER32',
    'int SetDisplayConfig(DWORD numPathArrayElements, LPVOID pathArray, DWORD numModeInfoArrayElements, LPVOID modeInfoArray, DWORD flags)');
# my $ret = $SetDisplayConfig->Call($numPathArrayElements, $pathArray, $numModeInfoArrayElements, $modeInfoArray, $flags);
# numPathArrayElements : DWORD -> DWORD
# pathArray : DISPLAYCONFIG_PATH_INFO* optional -> LPVOID
# numModeInfoArrayElements : DWORD -> DWORD
# modeInfoArray : DISPLAYCONFIG_MODE_INFO* optional -> LPVOID
# flags : SET_DISPLAY_CONFIG_FLAGS -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。