GdipGetRegionData

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

Status GdipGetRegionData(
    GpRegion* region,
    BYTE* buffer,
    DWORD bufferSize,
    DWORD* sizeFilled   // optional
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipGetRegionData(
    region As IntPtr,   ' GpRegion* in/out
    buffer As IntPtr,   ' BYTE* out
    bufferSize As UInteger,   ' DWORD
    sizeFilled As IntPtr   ' DWORD* optional, out
) As Integer
End Function

' region : GpRegion* in/out
' buffer : BYTE* out
' bufferSize : DWORD
' sizeFilled : DWORD* optional, out
Declare PtrSafe Function GdipGetRegionData Lib "gdiplus" ( _
    ByVal region As LongPtr, _
    ByVal buffer As LongPtr, _
    ByVal bufferSize As Long, _
    ByVal sizeFilled 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

GdipGetRegionData = ctypes.windll.gdiplus.GdipGetRegionData
GdipGetRegionData.restype = ctypes.c_int
GdipGetRegionData.argtypes = [
    ctypes.c_void_p,  # region : GpRegion* in/out
    ctypes.POINTER(ctypes.c_ubyte),  # buffer : BYTE* out
    wintypes.DWORD,  # bufferSize : DWORD
    ctypes.POINTER(wintypes.DWORD),  # sizeFilled : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipGetRegionData = Fiddle::Function.new(
  lib['GdipGetRegionData'],
  [
    Fiddle::TYPE_VOIDP,  # region : GpRegion* in/out
    Fiddle::TYPE_VOIDP,  # buffer : BYTE* out
    -Fiddle::TYPE_INT,  # bufferSize : DWORD
    Fiddle::TYPE_VOIDP,  # sizeFilled : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipGetRegionData(
        region: *mut GpRegion,  // GpRegion* in/out
        buffer: *mut u8,  // BYTE* out
        bufferSize: u32,  // DWORD
        sizeFilled: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipGetRegionData(IntPtr region, IntPtr buffer, uint bufferSize, IntPtr sizeFilled);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipGetRegionData' -Namespace Win32 -PassThru
# $api::GdipGetRegionData(region, buffer, bufferSize, sizeFilled)

#uselib "gdiplus.dll"
#func global GdipGetRegionData "GdipGetRegionData" sptr, sptr, sptr, sptr
; GdipGetRegionData varptr(region), varptr(buffer), bufferSize, varptr(sizeFilled)   ; 戻り値は stat
; region : GpRegion* in/out -> "sptr"
; buffer : BYTE* out -> "sptr"
; bufferSize : DWORD -> "sptr"
; sizeFilled : DWORD* 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。

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

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipGetRegionData = gdiplus.NewProc("GdipGetRegionData")
)

// region (GpRegion* in/out), buffer (BYTE* out), bufferSize (DWORD), sizeFilled (DWORD* optional, out)
r1, _, err := procGdipGetRegionData.Call(
	uintptr(region),
	uintptr(buffer),
	uintptr(bufferSize),
	uintptr(sizeFilled),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipGetRegionData(
  region: Pointer;   // GpRegion* in/out
  buffer: Pointer;   // BYTE* out
  bufferSize: DWORD;   // DWORD
  sizeFilled: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetRegionData';

result := DllCall("gdiplus\GdipGetRegionData"
    , "Ptr", region   ; GpRegion* in/out
    , "Ptr", buffer   ; BYTE* out
    , "UInt", bufferSize   ; DWORD
    , "Ptr", sizeFilled   ; DWORD* optional, out
    , "Int")   ; return: Status

●GdipGetRegionData(region, buffer, bufferSize, sizeFilled) = DLL("gdiplus.dll", "int GdipGetRegionData(void*, void*, dword, void*)")
# 呼び出し: GdipGetRegionData(region, buffer, bufferSize, sizeFilled)
# region : GpRegion* in/out -> "void*"
# buffer : BYTE* out -> "void*"
# bufferSize : DWORD -> "dword"
# sizeFilled : DWORD* 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)。

const std = @import("std");

extern "gdiplus" fn GdipGetRegionData(
    region: [*c]GpRegion, // GpRegion* in/out
    buffer: [*c]u8, // BYTE* out
    bufferSize: u32, // DWORD
    sizeFilled: [*c]u32 // DWORD* optional, out
) callconv(std.os.windows.WINAPI) i32;

proc GdipGetRegionData(
    region: ptr GpRegion,  # GpRegion* in/out
    buffer: ptr uint8,  # BYTE* out
    bufferSize: uint32,  # DWORD
    sizeFilled: ptr uint32  # DWORD* optional, out
): int32 {.importc: "GdipGetRegionData", stdcall, dynlib: "gdiplus.dll".}

pragma(lib, "gdiplus");
extern(Windows)
int GdipGetRegionData(
    GpRegion* region,   // GpRegion* in/out
    ubyte* buffer,   // BYTE* out
    uint bufferSize,   // DWORD
    uint* sizeFilled   // DWORD* optional, out
);

ccall((:GdipGetRegionData, "gdiplus.dll"), stdcall, Int32,
      (Ptr{GpRegion}, Ptr{UInt8}, UInt32, Ptr{UInt32}),
      region, buffer, bufferSize, sizeFilled)
# region : GpRegion* in/out -> Ptr{GpRegion}
# buffer : BYTE* out -> Ptr{UInt8}
# bufferSize : DWORD -> UInt32
# sizeFilled : DWORD* optional, out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GdipGetRegionData(
    void* region,
    uint8_t* buffer,
    uint32_t bufferSize,
    uint32_t* sizeFilled);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipGetRegionData(region, buffer, bufferSize, sizeFilled)
-- region : GpRegion* in/out
-- buffer : BYTE* out
-- bufferSize : DWORD
-- sizeFilled : DWORD* optional, out
-- 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('gdiplus.dll');
const GdipGetRegionData = lib.func('__stdcall', 'GdipGetRegionData', 'int32_t', ['void *', 'uint8_t *', 'uint32_t', 'uint32_t *']);
// GdipGetRegionData(region, buffer, bufferSize, sizeFilled)
// region : GpRegion* in/out -> 'void *'
// buffer : BYTE* out -> 'uint8_t *'
// bufferSize : DWORD -> 'uint32_t'
// sizeFilled : DWORD* optional, out -> '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("gdiplus.dll", {
  GdipGetRegionData: { parameters: ["pointer", "pointer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.GdipGetRegionData(region, buffer, bufferSize, sizeFilled)
// region : GpRegion* in/out -> "pointer"
// buffer : BYTE* out -> "pointer"
// bufferSize : DWORD -> "u32"
// sizeFilled : DWORD* optional, out -> "pointer"
// 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 GdipGetRegionData(
    void* region,
    uint8_t* buffer,
    uint32_t bufferSize,
    uint32_t* sizeFilled);
C, "gdiplus.dll");
// $ffi->GdipGetRegionData(region, buffer, bufferSize, sizeFilled);
// region : GpRegion* in/out
// buffer : BYTE* out
// bufferSize : DWORD
// sizeFilled : DWORD* optional, out
// 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 Gdiplus extends StdCallLibrary {
    Gdiplus INSTANCE = Native.load("gdiplus", Gdiplus.class);
    int GdipGetRegionData(
        Pointer region,   // GpRegion* in/out
        byte[] buffer,   // BYTE* out
        int bufferSize,   // DWORD
        IntByReference sizeFilled   // DWORD* optional, out
    );
}

@[Link("gdiplus")]
lib Libgdiplus
  fun GdipGetRegionData = GdipGetRegionData(
    region : GpRegion*,   # GpRegion* in/out
    buffer : UInt8*,   # BYTE* out
    bufferSize : UInt32,   # DWORD
    sizeFilled : UInt32*   # DWORD* optional, out
  ) : 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 GdipGetRegionDataNative = Int32 Function(Pointer<Void>, Pointer<Uint8>, Uint32, Pointer<Uint32>);
typedef GdipGetRegionDataDart = int Function(Pointer<Void>, Pointer<Uint8>, int, Pointer<Uint32>);
final GdipGetRegionData = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipGetRegionDataNative, GdipGetRegionDataDart>('GdipGetRegionData');
// region : GpRegion* in/out -> Pointer<Void>
// buffer : BYTE* out -> Pointer<Uint8>
// bufferSize : DWORD -> Uint32
// sizeFilled : DWORD* optional, out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GdipGetRegionData(
  region: Pointer;   // GpRegion* in/out
  buffer: Pointer;   // BYTE* out
  bufferSize: DWORD;   // DWORD
  sizeFilled: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetRegionData';

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

foreign import stdcall safe "GdipGetRegionData"
  c_GdipGetRegionData :: Ptr () -> Ptr Word8 -> Word32 -> Ptr Word32 -> IO Int32
-- region : GpRegion* in/out -> Ptr ()
-- buffer : BYTE* out -> Ptr Word8
-- bufferSize : DWORD -> Word32
-- sizeFilled : DWORD* optional, out -> Ptr 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 gdipgetregiondata =
  foreign "GdipGetRegionData"
    ((ptr void) @-> (ptr uint8_t) @-> uint32_t @-> (ptr uint32_t) @-> returning int32_t)
(* region : GpRegion* in/out -> (ptr void) *)
(* buffer : BYTE* out -> (ptr uint8_t) *)
(* bufferSize : DWORD -> uint32_t *)
(* sizeFilled : DWORD* optional, out -> (ptr 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 gdiplus (t "gdiplus.dll"))
(cffi:use-foreign-library gdiplus)

(cffi:defcfun ("GdipGetRegionData" gdip-get-region-data :convention :stdcall) :int32
  (region :pointer)   ; GpRegion* in/out
  (buffer :pointer)   ; BYTE* out
  (buffer-size :uint32)   ; DWORD
  (size-filled :pointer))   ; DWORD* optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GdipGetRegionData = Win32::API::More->new('gdiplus',
    'int GdipGetRegionData(LPVOID region, LPVOID buffer, DWORD bufferSize, LPVOID sizeFilled)');
# my $ret = $GdipGetRegionData->Call($region, $buffer, $bufferSize, $sizeFilled);
# region : GpRegion* in/out -> LPVOID
# buffer : BYTE* out -> LPVOID
# bufferSize : DWORD -> DWORD
# sizeFilled : DWORD* optional, out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。