ScaleWindowExtEx

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

BOOL ScaleWindowExtEx(
    HDC hdc,
    INT xn,
    INT xd,
    INT yn,
    INT yd,
    SIZE* lpsz   // optional
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function ScaleWindowExtEx(
    hdc As IntPtr,   ' HDC
    xn As Integer,   ' INT
    xd As Integer,   ' INT
    yn As Integer,   ' INT
    yd As Integer,   ' INT
    lpsz As IntPtr   ' SIZE* optional, out
) As Boolean
End Function

' hdc : HDC
' xn : INT
' xd : INT
' yn : INT
' yd : INT
' lpsz : SIZE* optional, out
Declare PtrSafe Function ScaleWindowExtEx Lib "gdi32" ( _
    ByVal hdc As LongPtr, _
    ByVal xn As Long, _
    ByVal xd As Long, _
    ByVal yn As Long, _
    ByVal yd As Long, _
    ByVal lpsz As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ScaleWindowExtEx = ctypes.windll.gdi32.ScaleWindowExtEx
ScaleWindowExtEx.restype = wintypes.BOOL
ScaleWindowExtEx.argtypes = [
    wintypes.HANDLE,  # hdc : HDC
    ctypes.c_int,  # xn : INT
    ctypes.c_int,  # xd : INT
    ctypes.c_int,  # yn : INT
    ctypes.c_int,  # yd : INT
    ctypes.c_void_p,  # lpsz : SIZE* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
ScaleWindowExtEx = Fiddle::Function.new(
  lib['ScaleWindowExtEx'],
  [
    Fiddle::TYPE_VOIDP,  # hdc : HDC
    Fiddle::TYPE_INT,  # xn : INT
    Fiddle::TYPE_INT,  # xd : INT
    Fiddle::TYPE_INT,  # yn : INT
    Fiddle::TYPE_INT,  # yd : INT
    Fiddle::TYPE_VOIDP,  # lpsz : SIZE* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn ScaleWindowExtEx(
        hdc: *mut core::ffi::c_void,  // HDC
        xn: i32,  // INT
        xd: i32,  // INT
        yn: i32,  // INT
        yd: i32,  // INT
        lpsz: *mut SIZE  // SIZE* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll")]
public static extern bool ScaleWindowExtEx(IntPtr hdc, int xn, int xd, int yn, int yd, IntPtr lpsz);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_ScaleWindowExtEx' -Namespace Win32 -PassThru
# $api::ScaleWindowExtEx(hdc, xn, xd, yn, yd, lpsz)

#uselib "GDI32.dll"
#func global ScaleWindowExtEx "ScaleWindowExtEx" sptr, sptr, sptr, sptr, sptr, sptr
; ScaleWindowExtEx hdc, xn, xd, yn, yd, varptr(lpsz)   ; 戻り値は stat
; hdc : HDC -> "sptr"
; xn : INT -> "sptr"
; xd : INT -> "sptr"
; yn : INT -> "sptr"
; yd : INT -> "sptr"
; lpsz : SIZE* optional, out -> "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 "GDI32.dll"
#cfunc global ScaleWindowExtEx "ScaleWindowExtEx" sptr, int, int, int, int, var
; res = ScaleWindowExtEx(hdc, xn, xd, yn, yd, lpsz)
; hdc : HDC -> "sptr"
; xn : INT -> "int"
; xd : INT -> "int"
; yn : INT -> "int"
; yd : INT -> "int"
; lpsz : SIZE* optional, out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; BOOL ScaleWindowExtEx(HDC hdc, INT xn, INT xd, INT yn, INT yd, SIZE* lpsz)
#uselib "GDI32.dll"
#cfunc global ScaleWindowExtEx "ScaleWindowExtEx" intptr, int, int, int, int, var
; res = ScaleWindowExtEx(hdc, xn, xd, yn, yd, lpsz)
; hdc : HDC -> "intptr"
; xn : INT -> "int"
; xd : INT -> "int"
; yn : INT -> "int"
; yd : INT -> "int"
; lpsz : SIZE* optional, out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procScaleWindowExtEx = gdi32.NewProc("ScaleWindowExtEx")
)

// hdc (HDC), xn (INT), xd (INT), yn (INT), yd (INT), lpsz (SIZE* optional, out)
r1, _, err := procScaleWindowExtEx.Call(
	uintptr(hdc),
	uintptr(xn),
	uintptr(xd),
	uintptr(yn),
	uintptr(yd),
	uintptr(lpsz),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function ScaleWindowExtEx(
  hdc: THandle;   // HDC
  xn: Integer;   // INT
  xd: Integer;   // INT
  yn: Integer;   // INT
  yd: Integer;   // INT
  lpsz: Pointer   // SIZE* optional, out
): BOOL; stdcall;
  external 'GDI32.dll' name 'ScaleWindowExtEx';

result := DllCall("GDI32\ScaleWindowExtEx"
    , "Ptr", hdc   ; HDC
    , "Int", xn   ; INT
    , "Int", xd   ; INT
    , "Int", yn   ; INT
    , "Int", yd   ; INT
    , "Ptr", lpsz   ; SIZE* optional, out
    , "Int")   ; return: BOOL

●ScaleWindowExtEx(hdc, xn, xd, yn, yd, lpsz) = DLL("GDI32.dll", "bool ScaleWindowExtEx(void*, int, int, int, int, void*)")
# 呼び出し: ScaleWindowExtEx(hdc, xn, xd, yn, yd, lpsz)
# hdc : HDC -> "void*"
# xn : INT -> "int"
# xd : INT -> "int"
# yn : INT -> "int"
# yd : INT -> "int"
# lpsz : SIZE* optional, out -> "void*"
# 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)。