ScaleViewportExtEx

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

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

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function ScaleViewportExtEx(
    hdc As IntPtr,   ' HDC
    xn As Integer,   ' INT
    dx 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
' dx : INT
' yn : INT
' yd : INT
' lpsz : SIZE* optional, out
Declare PtrSafe Function ScaleViewportExtEx Lib "gdi32" ( _
    ByVal hdc As LongPtr, _
    ByVal xn As Long, _
    ByVal dx 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

ScaleViewportExtEx = ctypes.windll.gdi32.ScaleViewportExtEx
ScaleViewportExtEx.restype = wintypes.BOOL
ScaleViewportExtEx.argtypes = [
    wintypes.HANDLE,  # hdc : HDC
    ctypes.c_int,  # xn : INT
    ctypes.c_int,  # dx : 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')
ScaleViewportExtEx = Fiddle::Function.new(
  lib['ScaleViewportExtEx'],
  [
    Fiddle::TYPE_VOIDP,  # hdc : HDC
    Fiddle::TYPE_INT,  # xn : INT
    Fiddle::TYPE_INT,  # dx : 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 ScaleViewportExtEx(
        hdc: *mut core::ffi::c_void,  // HDC
        xn: i32,  // INT
        dx: 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 ScaleViewportExtEx(IntPtr hdc, int xn, int dx, int yn, int yd, IntPtr lpsz);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_ScaleViewportExtEx' -Namespace Win32 -PassThru
# $api::ScaleViewportExtEx(hdc, xn, dx, yn, yd, lpsz)

#uselib "GDI32.dll"
#func global ScaleViewportExtEx "ScaleViewportExtEx" sptr, sptr, sptr, sptr, sptr, sptr
; ScaleViewportExtEx hdc, xn, dx, yn, yd, varptr(lpsz)   ; 戻り値は stat
; hdc : HDC -> "sptr"
; xn : INT -> "sptr"
; dx : 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 ScaleViewportExtEx "ScaleViewportExtEx" sptr, int, int, int, int, var
; res = ScaleViewportExtEx(hdc, xn, dx, yn, yd, lpsz)
; hdc : HDC -> "sptr"
; xn : INT -> "int"
; dx : 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 ScaleViewportExtEx(HDC hdc, INT xn, INT dx, INT yn, INT yd, SIZE* lpsz)
#uselib "GDI32.dll"
#cfunc global ScaleViewportExtEx "ScaleViewportExtEx" intptr, int, int, int, int, var
; res = ScaleViewportExtEx(hdc, xn, dx, yn, yd, lpsz)
; hdc : HDC -> "intptr"
; xn : INT -> "int"
; dx : 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")
	procScaleViewportExtEx = gdi32.NewProc("ScaleViewportExtEx")
)

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

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

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

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