SystemParametersInfoForDpi

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

BOOL SystemParametersInfoForDpi(
    DWORD uiAction,
    DWORD uiParam,
    void* pvParam,   // optional
    DWORD fWinIni,
    DWORD dpi
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SystemParametersInfoForDpi(
    uiAction As UInteger,   ' DWORD
    uiParam As UInteger,   ' DWORD
    pvParam As IntPtr,   ' void* optional, in/out
    fWinIni As UInteger,   ' DWORD
    dpi As UInteger   ' DWORD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' uiAction : DWORD
' uiParam : DWORD
' pvParam : void* optional, in/out
' fWinIni : DWORD
' dpi : DWORD
Declare PtrSafe Function SystemParametersInfoForDpi Lib "user32" ( _
    ByVal uiAction As Long, _
    ByVal uiParam As Long, _
    ByVal pvParam As LongPtr, _
    ByVal fWinIni As Long, _
    ByVal dpi 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

SystemParametersInfoForDpi = ctypes.windll.user32.SystemParametersInfoForDpi
SystemParametersInfoForDpi.restype = wintypes.BOOL
SystemParametersInfoForDpi.argtypes = [
    wintypes.DWORD,  # uiAction : DWORD
    wintypes.DWORD,  # uiParam : DWORD
    ctypes.POINTER(None),  # pvParam : void* optional, in/out
    wintypes.DWORD,  # fWinIni : DWORD
    wintypes.DWORD,  # dpi : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
SystemParametersInfoForDpi = Fiddle::Function.new(
  lib['SystemParametersInfoForDpi'],
  [
    -Fiddle::TYPE_INT,  # uiAction : DWORD
    -Fiddle::TYPE_INT,  # uiParam : DWORD
    Fiddle::TYPE_VOIDP,  # pvParam : void* optional, in/out
    -Fiddle::TYPE_INT,  # fWinIni : DWORD
    -Fiddle::TYPE_INT,  # dpi : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn SystemParametersInfoForDpi(
        uiAction: u32,  // DWORD
        uiParam: u32,  // DWORD
        pvParam: *mut (),  // void* optional, in/out
        fWinIni: u32,  // DWORD
        dpi: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true)]
public static extern bool SystemParametersInfoForDpi(uint uiAction, uint uiParam, IntPtr pvParam, uint fWinIni, uint dpi);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_SystemParametersInfoForDpi' -Namespace Win32 -PassThru
# $api::SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi)

#uselib "USER32.dll"
#func global SystemParametersInfoForDpi "SystemParametersInfoForDpi" sptr, sptr, sptr, sptr, sptr
; SystemParametersInfoForDpi uiAction, uiParam, pvParam, fWinIni, dpi   ; 戻り値は stat
; uiAction : DWORD -> "sptr"
; uiParam : DWORD -> "sptr"
; pvParam : void* optional, in/out -> "sptr"
; fWinIni : DWORD -> "sptr"
; dpi : 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。

#uselib "USER32.dll"
#cfunc global SystemParametersInfoForDpi "SystemParametersInfoForDpi" int, int, sptr, int, int
; res = SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi)
; uiAction : DWORD -> "int"
; uiParam : DWORD -> "int"
; pvParam : void* optional, in/out -> "sptr"
; fWinIni : DWORD -> "int"
; dpi : DWORD -> "int"

; BOOL SystemParametersInfoForDpi(DWORD uiAction, DWORD uiParam, void* pvParam, DWORD fWinIni, DWORD dpi)
#uselib "USER32.dll"
#cfunc global SystemParametersInfoForDpi "SystemParametersInfoForDpi" int, int, intptr, int, int
; res = SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi)
; uiAction : DWORD -> "int"
; uiParam : DWORD -> "int"
; pvParam : void* optional, in/out -> "intptr"
; fWinIni : DWORD -> "int"
; dpi : DWORD -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procSystemParametersInfoForDpi = user32.NewProc("SystemParametersInfoForDpi")
)

// uiAction (DWORD), uiParam (DWORD), pvParam (void* optional, in/out), fWinIni (DWORD), dpi (DWORD)
r1, _, err := procSystemParametersInfoForDpi.Call(
	uintptr(uiAction),
	uintptr(uiParam),
	uintptr(pvParam),
	uintptr(fWinIni),
	uintptr(dpi),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SystemParametersInfoForDpi(
  uiAction: DWORD;   // DWORD
  uiParam: DWORD;   // DWORD
  pvParam: Pointer;   // void* optional, in/out
  fWinIni: DWORD;   // DWORD
  dpi: DWORD   // DWORD
): BOOL; stdcall;
  external 'USER32.dll' name 'SystemParametersInfoForDpi';

result := DllCall("USER32\SystemParametersInfoForDpi"
    , "UInt", uiAction   ; DWORD
    , "UInt", uiParam   ; DWORD
    , "Ptr", pvParam   ; void* optional, in/out
    , "UInt", fWinIni   ; DWORD
    , "UInt", dpi   ; DWORD
    , "Int")   ; return: BOOL

●SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi) = DLL("USER32.dll", "bool SystemParametersInfoForDpi(dword, dword, void*, dword, dword)")
# 呼び出し: SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi)
# uiAction : DWORD -> "dword"
# uiParam : DWORD -> "dword"
# pvParam : void* optional, in/out -> "void*"
# fWinIni : DWORD -> "dword"
# dpi : 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 "user32" fn SystemParametersInfoForDpi(
    uiAction: u32, // DWORD
    uiParam: u32, // DWORD
    pvParam: ?*anyopaque, // void* optional, in/out
    fWinIni: u32, // DWORD
    dpi: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc SystemParametersInfoForDpi(
    uiAction: uint32,  # DWORD
    uiParam: uint32,  # DWORD
    pvParam: pointer,  # void* optional, in/out
    fWinIni: uint32,  # DWORD
    dpi: uint32  # DWORD
): int32 {.importc: "SystemParametersInfoForDpi", stdcall, dynlib: "USER32.dll".}

pragma(lib, "user32");
extern(Windows)
int SystemParametersInfoForDpi(
    uint uiAction,   // DWORD
    uint uiParam,   // DWORD
    void* pvParam,   // void* optional, in/out
    uint fWinIni,   // DWORD
    uint dpi   // DWORD
);

ccall((:SystemParametersInfoForDpi, "USER32.dll"), stdcall, Int32,
      (UInt32, UInt32, Ptr{Cvoid}, UInt32, UInt32),
      uiAction, uiParam, pvParam, fWinIni, dpi)
# uiAction : DWORD -> UInt32
# uiParam : DWORD -> UInt32
# pvParam : void* optional, in/out -> Ptr{Cvoid}
# fWinIni : DWORD -> UInt32
# dpi : 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 SystemParametersInfoForDpi(
    uint32_t uiAction,
    uint32_t uiParam,
    void* pvParam,
    uint32_t fWinIni,
    uint32_t dpi);
]]
local user32 = ffi.load("user32")
-- user32.SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi)
-- uiAction : DWORD
-- uiParam : DWORD
-- pvParam : void* optional, in/out
-- fWinIni : DWORD
-- dpi : 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('USER32.dll');
const SystemParametersInfoForDpi = lib.func('__stdcall', 'SystemParametersInfoForDpi', 'int32_t', ['uint32_t', 'uint32_t', 'void *', 'uint32_t', 'uint32_t']);
// SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi)
// uiAction : DWORD -> 'uint32_t'
// uiParam : DWORD -> 'uint32_t'
// pvParam : void* optional, in/out -> 'void *'
// fWinIni : DWORD -> 'uint32_t'
// dpi : 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("USER32.dll", {
  SystemParametersInfoForDpi: { parameters: ["u32", "u32", "pointer", "u32", "u32"], result: "i32" },
});
// lib.symbols.SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi)
// uiAction : DWORD -> "u32"
// uiParam : DWORD -> "u32"
// pvParam : void* optional, in/out -> "pointer"
// fWinIni : DWORD -> "u32"
// dpi : 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 SystemParametersInfoForDpi(
    uint32_t uiAction,
    uint32_t uiParam,
    void* pvParam,
    uint32_t fWinIni,
    uint32_t dpi);
C, "USER32.dll");
// $ffi->SystemParametersInfoForDpi(uiAction, uiParam, pvParam, fWinIni, dpi);
// uiAction : DWORD
// uiParam : DWORD
// pvParam : void* optional, in/out
// fWinIni : DWORD
// dpi : 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 User32 extends StdCallLibrary {
    User32 INSTANCE = Native.load("user32", User32.class);
    boolean SystemParametersInfoForDpi(
        int uiAction,   // DWORD
        int uiParam,   // DWORD
        Pointer pvParam,   // void* optional, in/out
        int fWinIni,   // DWORD
        int dpi   // DWORD
    );
}

@[Link("user32")]
lib LibUSER32
  fun SystemParametersInfoForDpi = SystemParametersInfoForDpi(
    uiAction : UInt32,   # DWORD
    uiParam : UInt32,   # DWORD
    pvParam : Void*,   # void* optional, in/out
    fWinIni : UInt32,   # DWORD
    dpi : 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 SystemParametersInfoForDpiNative = Int32 Function(Uint32, Uint32, Pointer<Void>, Uint32, Uint32);
typedef SystemParametersInfoForDpiDart = int Function(int, int, Pointer<Void>, int, int);
final SystemParametersInfoForDpi = DynamicLibrary.open('USER32.dll')
    .lookupFunction<SystemParametersInfoForDpiNative, SystemParametersInfoForDpiDart>('SystemParametersInfoForDpi');
// uiAction : DWORD -> Uint32
// uiParam : DWORD -> Uint32
// pvParam : void* optional, in/out -> Pointer<Void>
// fWinIni : DWORD -> Uint32
// dpi : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SystemParametersInfoForDpi(
  uiAction: DWORD;   // DWORD
  uiParam: DWORD;   // DWORD
  pvParam: Pointer;   // void* optional, in/out
  fWinIni: DWORD;   // DWORD
  dpi: DWORD   // DWORD
): BOOL; stdcall;
  external 'USER32.dll' name 'SystemParametersInfoForDpi';

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

foreign import stdcall safe "SystemParametersInfoForDpi"
  c_SystemParametersInfoForDpi :: Word32 -> Word32 -> Ptr () -> Word32 -> Word32 -> IO CInt
-- uiAction : DWORD -> Word32
-- uiParam : DWORD -> Word32
-- pvParam : void* optional, in/out -> Ptr ()
-- fWinIni : DWORD -> Word32
-- dpi : 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 systemparametersinfofordpi =
  foreign "SystemParametersInfoForDpi"
    (uint32_t @-> uint32_t @-> (ptr void) @-> uint32_t @-> uint32_t @-> returning int32_t)
(* uiAction : DWORD -> uint32_t *)
(* uiParam : DWORD -> uint32_t *)
(* pvParam : void* optional, in/out -> (ptr void) *)
(* fWinIni : DWORD -> uint32_t *)
(* dpi : 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 user32 (t "USER32.dll"))
(cffi:use-foreign-library user32)

(cffi:defcfun ("SystemParametersInfoForDpi" system-parameters-info-for-dpi :convention :stdcall) :int32
  (ui-action :uint32)   ; DWORD
  (ui-param :uint32)   ; DWORD
  (pv-param :pointer)   ; void* optional, in/out
  (f-win-ini :uint32)   ; DWORD
  (dpi :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SystemParametersInfoForDpi = Win32::API::More->new('USER32',
    'BOOL SystemParametersInfoForDpi(DWORD uiAction, DWORD uiParam, LPVOID pvParam, DWORD fWinIni, DWORD dpi)');
# my $ret = $SystemParametersInfoForDpi->Call($uiAction, $uiParam, $pvParam, $fWinIni, $dpi);
# uiAction : DWORD -> DWORD
# uiParam : DWORD -> DWORD
# pvParam : void* optional, in/out -> LPVOID
# fWinIni : DWORD -> DWORD
# dpi : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。