CheckColorsInGamut

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

BOOL CheckColorsInGamut(
    HDC hdc,
    RGBTRIPLE* lpRGBTriple,
    void* dlpBuffer,
    DWORD nCount
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function CheckColorsInGamut(
    hdc As IntPtr,   ' HDC
    lpRGBTriple As IntPtr,   ' RGBTRIPLE*
    dlpBuffer As IntPtr,   ' void* out
    nCount As UInteger   ' DWORD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hdc : HDC
' lpRGBTriple : RGBTRIPLE*
' dlpBuffer : void* out
' nCount : DWORD
Declare PtrSafe Function CheckColorsInGamut Lib "gdi32" ( _
    ByVal hdc As LongPtr, _
    ByVal lpRGBTriple As LongPtr, _
    ByVal dlpBuffer As LongPtr, _
    ByVal nCount 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

CheckColorsInGamut = ctypes.windll.gdi32.CheckColorsInGamut
CheckColorsInGamut.restype = wintypes.BOOL
CheckColorsInGamut.argtypes = [
    wintypes.HANDLE,  # hdc : HDC
    ctypes.c_void_p,  # lpRGBTriple : RGBTRIPLE*
    ctypes.POINTER(None),  # dlpBuffer : void* out
    wintypes.DWORD,  # nCount : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
CheckColorsInGamut = Fiddle::Function.new(
  lib['CheckColorsInGamut'],
  [
    Fiddle::TYPE_VOIDP,  # hdc : HDC
    Fiddle::TYPE_VOIDP,  # lpRGBTriple : RGBTRIPLE*
    Fiddle::TYPE_VOIDP,  # dlpBuffer : void* out
    -Fiddle::TYPE_INT,  # nCount : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn CheckColorsInGamut(
        hdc: *mut core::ffi::c_void,  // HDC
        lpRGBTriple: *mut RGBTRIPLE,  // RGBTRIPLE*
        dlpBuffer: *mut (),  // void* out
        nCount: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll")]
public static extern bool CheckColorsInGamut(IntPtr hdc, IntPtr lpRGBTriple, IntPtr dlpBuffer, uint nCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_CheckColorsInGamut' -Namespace Win32 -PassThru
# $api::CheckColorsInGamut(hdc, lpRGBTriple, dlpBuffer, nCount)

#uselib "GDI32.dll"
#func global CheckColorsInGamut "CheckColorsInGamut" sptr, sptr, sptr, sptr
; CheckColorsInGamut hdc, varptr(lpRGBTriple), dlpBuffer, nCount   ; 戻り値は stat
; hdc : HDC -> "sptr"
; lpRGBTriple : RGBTRIPLE* -> "sptr"
; dlpBuffer : void* out -> "sptr"
; nCount : 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。

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

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procCheckColorsInGamut = gdi32.NewProc("CheckColorsInGamut")
)

// hdc (HDC), lpRGBTriple (RGBTRIPLE*), dlpBuffer (void* out), nCount (DWORD)
r1, _, err := procCheckColorsInGamut.Call(
	uintptr(hdc),
	uintptr(lpRGBTriple),
	uintptr(dlpBuffer),
	uintptr(nCount),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CheckColorsInGamut(
  hdc: THandle;   // HDC
  lpRGBTriple: Pointer;   // RGBTRIPLE*
  dlpBuffer: Pointer;   // void* out
  nCount: DWORD   // DWORD
): BOOL; stdcall;
  external 'GDI32.dll' name 'CheckColorsInGamut';

result := DllCall("GDI32\CheckColorsInGamut"
    , "Ptr", hdc   ; HDC
    , "Ptr", lpRGBTriple   ; RGBTRIPLE*
    , "Ptr", dlpBuffer   ; void* out
    , "UInt", nCount   ; DWORD
    , "Int")   ; return: BOOL

●CheckColorsInGamut(hdc, lpRGBTriple, dlpBuffer, nCount) = DLL("GDI32.dll", "bool CheckColorsInGamut(void*, void*, void*, dword)")
# 呼び出し: CheckColorsInGamut(hdc, lpRGBTriple, dlpBuffer, nCount)
# hdc : HDC -> "void*"
# lpRGBTriple : RGBTRIPLE* -> "void*"
# dlpBuffer : void* out -> "void*"
# nCount : 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 "gdi32" fn CheckColorsInGamut(
    hdc: ?*anyopaque, // HDC
    lpRGBTriple: [*c]RGBTRIPLE, // RGBTRIPLE*
    dlpBuffer: ?*anyopaque, // void* out
    nCount: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc CheckColorsInGamut(
    hdc: pointer,  # HDC
    lpRGBTriple: ptr RGBTRIPLE,  # RGBTRIPLE*
    dlpBuffer: pointer,  # void* out
    nCount: uint32  # DWORD
): int32 {.importc: "CheckColorsInGamut", stdcall, dynlib: "GDI32.dll".}

pragma(lib, "gdi32");
extern(Windows)
int CheckColorsInGamut(
    void* hdc,   // HDC
    RGBTRIPLE* lpRGBTriple,   // RGBTRIPLE*
    void* dlpBuffer,   // void* out
    uint nCount   // DWORD
);

ccall((:CheckColorsInGamut, "GDI32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{RGBTRIPLE}, Ptr{Cvoid}, UInt32),
      hdc, lpRGBTriple, dlpBuffer, nCount)
# hdc : HDC -> Ptr{Cvoid}
# lpRGBTriple : RGBTRIPLE* -> Ptr{RGBTRIPLE}
# dlpBuffer : void* out -> Ptr{Cvoid}
# nCount : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t CheckColorsInGamut(
    void* hdc,
    void* lpRGBTriple,
    void* dlpBuffer,
    uint32_t nCount);
]]
local gdi32 = ffi.load("gdi32")
-- gdi32.CheckColorsInGamut(hdc, lpRGBTriple, dlpBuffer, nCount)
-- hdc : HDC
-- lpRGBTriple : RGBTRIPLE*
-- dlpBuffer : void* out
-- nCount : 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('GDI32.dll');
const CheckColorsInGamut = lib.func('__stdcall', 'CheckColorsInGamut', 'int32_t', ['void *', 'void *', 'void *', 'uint32_t']);
// CheckColorsInGamut(hdc, lpRGBTriple, dlpBuffer, nCount)
// hdc : HDC -> 'void *'
// lpRGBTriple : RGBTRIPLE* -> 'void *'
// dlpBuffer : void* out -> 'void *'
// nCount : 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("GDI32.dll", {
  CheckColorsInGamut: { parameters: ["pointer", "pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.CheckColorsInGamut(hdc, lpRGBTriple, dlpBuffer, nCount)
// hdc : HDC -> "pointer"
// lpRGBTriple : RGBTRIPLE* -> "pointer"
// dlpBuffer : void* out -> "pointer"
// nCount : 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
int32_t CheckColorsInGamut(
    void* hdc,
    void* lpRGBTriple,
    void* dlpBuffer,
    uint32_t nCount);
C, "GDI32.dll");
// $ffi->CheckColorsInGamut(hdc, lpRGBTriple, dlpBuffer, nCount);
// hdc : HDC
// lpRGBTriple : RGBTRIPLE*
// dlpBuffer : void* out
// nCount : 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 Gdi32 extends StdCallLibrary {
    Gdi32 INSTANCE = Native.load("gdi32", Gdi32.class);
    boolean CheckColorsInGamut(
        Pointer hdc,   // HDC
        Pointer lpRGBTriple,   // RGBTRIPLE*
        Pointer dlpBuffer,   // void* out
        int nCount   // DWORD
    );
}

@[Link("gdi32")]
lib LibGDI32
  fun CheckColorsInGamut = CheckColorsInGamut(
    hdc : Void*,   # HDC
    lpRGBTriple : RGBTRIPLE*,   # RGBTRIPLE*
    dlpBuffer : Void*,   # void* out
    nCount : UInt32   # DWORD
  ) : 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 CheckColorsInGamutNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Uint32);
typedef CheckColorsInGamutDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, int);
final CheckColorsInGamut = DynamicLibrary.open('GDI32.dll')
    .lookupFunction<CheckColorsInGamutNative, CheckColorsInGamutDart>('CheckColorsInGamut');
// hdc : HDC -> Pointer<Void>
// lpRGBTriple : RGBTRIPLE* -> Pointer<Void>
// dlpBuffer : void* out -> Pointer<Void>
// nCount : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CheckColorsInGamut(
  hdc: THandle;   // HDC
  lpRGBTriple: Pointer;   // RGBTRIPLE*
  dlpBuffer: Pointer;   // void* out
  nCount: DWORD   // DWORD
): BOOL; stdcall;
  external 'GDI32.dll' name 'CheckColorsInGamut';

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

foreign import stdcall safe "CheckColorsInGamut"
  c_CheckColorsInGamut :: Ptr () -> Ptr () -> Ptr () -> Word32 -> IO CInt
-- hdc : HDC -> Ptr ()
-- lpRGBTriple : RGBTRIPLE* -> Ptr ()
-- dlpBuffer : void* out -> Ptr ()
-- nCount : 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 checkcolorsingamut =
  foreign "CheckColorsInGamut"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* hdc : HDC -> (ptr void) *)
(* lpRGBTriple : RGBTRIPLE* -> (ptr void) *)
(* dlpBuffer : void* out -> (ptr void) *)
(* nCount : 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 gdi32 (t "GDI32.dll"))
(cffi:use-foreign-library gdi32)

(cffi:defcfun ("CheckColorsInGamut" check-colors-in-gamut :convention :stdcall) :int32
  (hdc :pointer)   ; HDC
  (lp-rgbtriple :pointer)   ; RGBTRIPLE*
  (dlp-buffer :pointer)   ; void* out
  (n-count :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $CheckColorsInGamut = Win32::API::More->new('GDI32',
    'BOOL CheckColorsInGamut(HANDLE hdc, LPVOID lpRGBTriple, LPVOID dlpBuffer, DWORD nCount)');
# my $ret = $CheckColorsInGamut->Call($hdc, $lpRGBTriple, $dlpBuffer, $nCount);
# hdc : HDC -> HANDLE
# lpRGBTriple : RGBTRIPLE* -> LPVOID
# dlpBuffer : void* out -> LPVOID
# nCount : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。