OpenThemeDataForDpi

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

HTHEME OpenThemeDataForDpi(
    HWND hwnd,   // optional
    LPCWSTR pszClassList,
    DWORD dpi
);

<DllImport("UXTHEME.dll", ExactSpelling:=True)>
Public Shared Function OpenThemeDataForDpi(
    hwnd As IntPtr,   ' HWND optional
    <MarshalAs(UnmanagedType.LPWStr)> pszClassList As String,   ' LPCWSTR
    dpi As UInteger   ' DWORD
) As IntPtr
End Function

' hwnd : HWND optional
' pszClassList : LPCWSTR
' dpi : DWORD
Declare PtrSafe Function OpenThemeDataForDpi Lib "uxtheme" ( _
    ByVal hwnd As LongPtr, _
    ByVal pszClassList As LongPtr, _
    ByVal dpi 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

OpenThemeDataForDpi = ctypes.windll.uxtheme.OpenThemeDataForDpi
OpenThemeDataForDpi.restype = ctypes.c_ssize_t
OpenThemeDataForDpi.argtypes = [
    wintypes.HANDLE,  # hwnd : HWND optional
    wintypes.LPCWSTR,  # pszClassList : LPCWSTR
    wintypes.DWORD,  # dpi : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('UXTHEME.dll')
OpenThemeDataForDpi = Fiddle::Function.new(
  lib['OpenThemeDataForDpi'],
  [
    Fiddle::TYPE_VOIDP,  # hwnd : HWND optional
    Fiddle::TYPE_VOIDP,  # pszClassList : LPCWSTR
    -Fiddle::TYPE_INT,  # dpi : DWORD
  ],
  Fiddle::TYPE_INTPTR_T)

#[link(name = "uxtheme")]
extern "system" {
    fn OpenThemeDataForDpi(
        hwnd: *mut core::ffi::c_void,  // HWND optional
        pszClassList: *const u16,  // LPCWSTR
        dpi: u32  // DWORD
    ) -> isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("UXTHEME.dll")]
public static extern IntPtr OpenThemeDataForDpi(IntPtr hwnd, [MarshalAs(UnmanagedType.LPWStr)] string pszClassList, uint dpi);
"@
$api = Add-Type -MemberDefinition $sig -Name 'UXTHEME_OpenThemeDataForDpi' -Namespace Win32 -PassThru
# $api::OpenThemeDataForDpi(hwnd, pszClassList, dpi)

#uselib "UXTHEME.dll"
#func global OpenThemeDataForDpi "OpenThemeDataForDpi" sptr, sptr, sptr
; OpenThemeDataForDpi hwnd, pszClassList, dpi   ; 戻り値は stat
; hwnd : HWND optional -> "sptr"
; pszClassList : LPCWSTR -> "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 "UXTHEME.dll"
#cfunc global OpenThemeDataForDpi "OpenThemeDataForDpi" sptr, wstr, int
; res = OpenThemeDataForDpi(hwnd, pszClassList, dpi)
; hwnd : HWND optional -> "sptr"
; pszClassList : LPCWSTR -> "wstr"
; dpi : DWORD -> "int"

; HTHEME OpenThemeDataForDpi(HWND hwnd, LPCWSTR pszClassList, DWORD dpi)
#uselib "UXTHEME.dll"
#cfunc global OpenThemeDataForDpi "OpenThemeDataForDpi" intptr, wstr, int
; res = OpenThemeDataForDpi(hwnd, pszClassList, dpi)
; hwnd : HWND optional -> "intptr"
; pszClassList : LPCWSTR -> "wstr"
; dpi : DWORD -> "int"

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

var (
	uxtheme = windows.NewLazySystemDLL("UXTHEME.dll")
	procOpenThemeDataForDpi = uxtheme.NewProc("OpenThemeDataForDpi")
)

// hwnd (HWND optional), pszClassList (LPCWSTR), dpi (DWORD)
r1, _, err := procOpenThemeDataForDpi.Call(
	uintptr(hwnd),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszClassList))),
	uintptr(dpi),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HTHEME

function OpenThemeDataForDpi(
  hwnd: THandle;   // HWND optional
  pszClassList: PWideChar;   // LPCWSTR
  dpi: DWORD   // DWORD
): NativeInt; stdcall;
  external 'UXTHEME.dll' name 'OpenThemeDataForDpi';

result := DllCall("UXTHEME\OpenThemeDataForDpi"
    , "Ptr", hwnd   ; HWND optional
    , "WStr", pszClassList   ; LPCWSTR
    , "UInt", dpi   ; DWORD
    , "Ptr")   ; return: HTHEME

●OpenThemeDataForDpi(hwnd, pszClassList, dpi) = DLL("UXTHEME.dll", "int OpenThemeDataForDpi(void*, char*, dword)")
# 呼び出し: OpenThemeDataForDpi(hwnd, pszClassList, dpi)
# hwnd : HWND optional -> "void*"
# pszClassList : LPCWSTR -> "char*"
# 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 "uxtheme" fn OpenThemeDataForDpi(
    hwnd: ?*anyopaque, // HWND optional
    pszClassList: [*c]const u16, // LPCWSTR
    dpi: u32 // DWORD
) callconv(std.os.windows.WINAPI) isize;

proc OpenThemeDataForDpi(
    hwnd: pointer,  # HWND optional
    pszClassList: WideCString,  # LPCWSTR
    dpi: uint32  # DWORD
): int {.importc: "OpenThemeDataForDpi", stdcall, dynlib: "UXTHEME.dll".}

pragma(lib, "uxtheme");
extern(Windows)
ptrdiff_t OpenThemeDataForDpi(
    void* hwnd,   // HWND optional
    const(wchar)* pszClassList,   // LPCWSTR
    uint dpi   // DWORD
);

ccall((:OpenThemeDataForDpi, "UXTHEME.dll"), stdcall, Int,
      (Ptr{Cvoid}, Cwstring, UInt32),
      hwnd, pszClassList, dpi)
# hwnd : HWND optional -> Ptr{Cvoid}
# pszClassList : LPCWSTR -> Cwstring
# dpi : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
intptr_t OpenThemeDataForDpi(
    void* hwnd,
    const uint16_t* pszClassList,
    uint32_t dpi);
]]
local uxtheme = ffi.load("uxtheme")
-- uxtheme.OpenThemeDataForDpi(hwnd, pszClassList, dpi)
-- hwnd : HWND optional
-- pszClassList : LPCWSTR
-- 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('UXTHEME.dll');
const OpenThemeDataForDpi = lib.func('__stdcall', 'OpenThemeDataForDpi', 'intptr_t', ['void *', 'str16', 'uint32_t']);
// OpenThemeDataForDpi(hwnd, pszClassList, dpi)
// hwnd : HWND optional -> 'void *'
// pszClassList : LPCWSTR -> 'str16'
// 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("UXTHEME.dll", {
  OpenThemeDataForDpi: { parameters: ["pointer", "buffer", "u32"], result: "isize" },
});
// lib.symbols.OpenThemeDataForDpi(hwnd, pszClassList, dpi)
// hwnd : HWND optional -> "pointer"
// pszClassList : LPCWSTR -> "buffer"
// 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
intptr_t OpenThemeDataForDpi(
    void* hwnd,
    const uint16_t* pszClassList,
    uint32_t dpi);
C, "UXTHEME.dll");
// $ffi->OpenThemeDataForDpi(hwnd, pszClassList, dpi);
// hwnd : HWND optional
// pszClassList : LPCWSTR
// 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 Uxtheme extends StdCallLibrary {
    Uxtheme INSTANCE = Native.load("uxtheme", Uxtheme.class);
    long OpenThemeDataForDpi(
        Pointer hwnd,   // HWND optional
        WString pszClassList,   // LPCWSTR
        int dpi   // DWORD
    );
}

@[Link("uxtheme")]
lib LibUXTHEME
  fun OpenThemeDataForDpi = OpenThemeDataForDpi(
    hwnd : Void*,   # HWND optional
    pszClassList : UInt16*,   # LPCWSTR
    dpi : UInt32   # DWORD
  ) : LibC::SSizeT
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 OpenThemeDataForDpiNative = IntPtr Function(Pointer<Void>, Pointer<Utf16>, Uint32);
typedef OpenThemeDataForDpiDart = int Function(Pointer<Void>, Pointer<Utf16>, int);
final OpenThemeDataForDpi = DynamicLibrary.open('UXTHEME.dll')
    .lookupFunction<OpenThemeDataForDpiNative, OpenThemeDataForDpiDart>('OpenThemeDataForDpi');
// hwnd : HWND optional -> Pointer<Void>
// pszClassList : LPCWSTR -> Pointer<Utf16>
// dpi : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function OpenThemeDataForDpi(
  hwnd: THandle;   // HWND optional
  pszClassList: PWideChar;   // LPCWSTR
  dpi: DWORD   // DWORD
): NativeInt; stdcall;
  external 'UXTHEME.dll' name 'OpenThemeDataForDpi';

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

foreign import stdcall safe "OpenThemeDataForDpi"
  c_OpenThemeDataForDpi :: Ptr () -> CWString -> Word32 -> IO CIntPtr
-- hwnd : HWND optional -> Ptr ()
-- pszClassList : LPCWSTR -> CWString
-- 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 openthemedatafordpi =
  foreign "OpenThemeDataForDpi"
    ((ptr void) @-> (ptr uint16_t) @-> uint32_t @-> returning intptr_t)
(* hwnd : HWND optional -> (ptr void) *)
(* pszClassList : LPCWSTR -> (ptr uint16_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 uxtheme (t "UXTHEME.dll"))
(cffi:use-foreign-library uxtheme)

(cffi:defcfun ("OpenThemeDataForDpi" open-theme-data-for-dpi :convention :stdcall) :int64
  (hwnd :pointer)   ; HWND optional
  (psz-class-list (:string :encoding :utf-16le))   ; LPCWSTR
  (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 $OpenThemeDataForDpi = Win32::API::More->new('UXTHEME',
    'LPARAM OpenThemeDataForDpi(HANDLE hwnd, LPCWSTR pszClassList, DWORD dpi)');
# my $ret = $OpenThemeDataForDpi->Call($hwnd, $pszClassList, $dpi);
# hwnd : HWND optional -> HANDLE
# pszClassList : LPCWSTR -> LPCWSTR
# 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。