GdipGetLineColors

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

Status GdipGetLineColors(
    GpLineGradient* brush,
    DWORD* colors
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipGetLineColors(
    brush As IntPtr,   ' GpLineGradient* in/out
    ByRef colors As UInteger   ' DWORD* in/out
) As Integer
End Function

' brush : GpLineGradient* in/out
' colors : DWORD* in/out
Declare PtrSafe Function GdipGetLineColors Lib "gdiplus" ( _
    ByVal brush As LongPtr, _
    ByRef colors 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

GdipGetLineColors = ctypes.windll.gdiplus.GdipGetLineColors
GdipGetLineColors.restype = ctypes.c_int
GdipGetLineColors.argtypes = [
    ctypes.c_void_p,  # brush : GpLineGradient* in/out
    ctypes.POINTER(wintypes.DWORD),  # colors : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipGetLineColors = Fiddle::Function.new(
  lib['GdipGetLineColors'],
  [
    Fiddle::TYPE_VOIDP,  # brush : GpLineGradient* in/out
    Fiddle::TYPE_VOIDP,  # colors : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipGetLineColors(
        brush: *mut GpLineGradient,  // GpLineGradient* in/out
        colors: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipGetLineColors(IntPtr brush, ref uint colors);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipGetLineColors' -Namespace Win32 -PassThru
# $api::GdipGetLineColors(brush, colors)

#uselib "gdiplus.dll"
#func global GdipGetLineColors "GdipGetLineColors" sptr, sptr
; GdipGetLineColors varptr(brush), varptr(colors)   ; 戻り値は stat
; brush : GpLineGradient* in/out -> "sptr"
; colors : DWORD* in/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")
	procGdipGetLineColors = gdiplus.NewProc("GdipGetLineColors")
)

// brush (GpLineGradient* in/out), colors (DWORD* in/out)
r1, _, err := procGdipGetLineColors.Call(
	uintptr(brush),
	uintptr(colors),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipGetLineColors(
  brush: Pointer;   // GpLineGradient* in/out
  colors: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetLineColors';

result := DllCall("gdiplus\GdipGetLineColors"
    , "Ptr", brush   ; GpLineGradient* in/out
    , "Ptr", colors   ; DWORD* in/out
    , "Int")   ; return: Status

●GdipGetLineColors(brush, colors) = DLL("gdiplus.dll", "int GdipGetLineColors(void*, void*)")
# 呼び出し: GdipGetLineColors(brush, colors)
# brush : GpLineGradient* in/out -> "void*"
# colors : DWORD* in/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 GdipGetLineColors(
    brush: [*c]GpLineGradient, // GpLineGradient* in/out
    colors: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) i32;

proc GdipGetLineColors(
    brush: ptr GpLineGradient,  # GpLineGradient* in/out
    colors: ptr uint32  # DWORD* in/out
): int32 {.importc: "GdipGetLineColors", stdcall, dynlib: "gdiplus.dll".}

pragma(lib, "gdiplus");
extern(Windows)
int GdipGetLineColors(
    GpLineGradient* brush,   // GpLineGradient* in/out
    uint* colors   // DWORD* in/out
);

ccall((:GdipGetLineColors, "gdiplus.dll"), stdcall, Int32,
      (Ptr{GpLineGradient}, Ptr{UInt32}),
      brush, colors)
# brush : GpLineGradient* in/out -> Ptr{GpLineGradient}
# colors : DWORD* in/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 GdipGetLineColors(
    void* brush,
    uint32_t* colors);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipGetLineColors(brush, colors)
-- brush : GpLineGradient* in/out
-- colors : DWORD* in/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 GdipGetLineColors = lib.func('__stdcall', 'GdipGetLineColors', 'int32_t', ['void *', 'uint32_t *']);
// GdipGetLineColors(brush, colors)
// brush : GpLineGradient* in/out -> 'void *'
// colors : DWORD* in/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", {
  GdipGetLineColors: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.GdipGetLineColors(brush, colors)
// brush : GpLineGradient* in/out -> "pointer"
// colors : DWORD* in/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 GdipGetLineColors(
    void* brush,
    uint32_t* colors);
C, "gdiplus.dll");
// $ffi->GdipGetLineColors(brush, colors);
// brush : GpLineGradient* in/out
// colors : DWORD* in/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 GdipGetLineColors(
        Pointer brush,   // GpLineGradient* in/out
        IntByReference colors   // DWORD* in/out
    );
}

@[Link("gdiplus")]
lib Libgdiplus
  fun GdipGetLineColors = GdipGetLineColors(
    brush : GpLineGradient*,   # GpLineGradient* in/out
    colors : UInt32*   # DWORD* in/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 GdipGetLineColorsNative = Int32 Function(Pointer<Void>, Pointer<Uint32>);
typedef GdipGetLineColorsDart = int Function(Pointer<Void>, Pointer<Uint32>);
final GdipGetLineColors = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipGetLineColorsNative, GdipGetLineColorsDart>('GdipGetLineColors');
// brush : GpLineGradient* in/out -> Pointer<Void>
// colors : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GdipGetLineColors(
  brush: Pointer;   // GpLineGradient* in/out
  colors: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetLineColors';

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

foreign import stdcall safe "GdipGetLineColors"
  c_GdipGetLineColors :: Ptr () -> Ptr Word32 -> IO Int32
-- brush : GpLineGradient* in/out -> Ptr ()
-- colors : DWORD* in/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 gdipgetlinecolors =
  foreign "GdipGetLineColors"
    ((ptr void) @-> (ptr uint32_t) @-> returning int32_t)
(* brush : GpLineGradient* in/out -> (ptr void) *)
(* colors : DWORD* in/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 ("GdipGetLineColors" gdip-get-line-colors :convention :stdcall) :int32
  (brush :pointer)   ; GpLineGradient* in/out
  (colors :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GdipGetLineColors = Win32::API::More->new('gdiplus',
    'int GdipGetLineColors(LPVOID brush, LPVOID colors)');
# my $ret = $GdipGetLineColors->Call($brush, $colors);
# brush : GpLineGradient* in/out -> LPVOID
# colors : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。