glColor3us

// OPENGL32.dll
#include <windows.h>

void glColor3us(
    WORD red,
    WORD green,
    WORD blue
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glColor3us(
    red As UShort,   ' WORD
    green As UShort,   ' WORD
    blue As UShort   ' WORD
)
End Sub

' red : WORD
' green : WORD
' blue : WORD
Declare PtrSafe Sub glColor3us Lib "opengl32" ( _
    ByVal red As Integer, _
    ByVal green As Integer, _
    ByVal blue As Integer)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glColor3us = ctypes.windll.opengl32.glColor3us
glColor3us.restype = None
glColor3us.argtypes = [
    ctypes.c_ushort,  # red : WORD
    ctypes.c_ushort,  # green : WORD
    ctypes.c_ushort,  # blue : WORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glColor3us = Fiddle::Function.new(
  lib['glColor3us'],
  [
    -Fiddle::TYPE_SHORT,  # red : WORD
    -Fiddle::TYPE_SHORT,  # green : WORD
    -Fiddle::TYPE_SHORT,  # blue : WORD
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glColor3us(
        red: u16,  // WORD
        green: u16,  // WORD
        blue: u16  // WORD
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glColor3us(ushort red, ushort green, ushort blue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glColor3us' -Namespace Win32 -PassThru
# $api::glColor3us(red, green, blue)

#uselib "OPENGL32.dll"
#func global glColor3us "glColor3us" sptr, sptr, sptr
; glColor3us red, green, blue
; red : WORD -> "sptr"
; green : WORD -> "sptr"
; blue : WORD -> "sptr"

#uselib "OPENGL32.dll"
#func global glColor3us "glColor3us" int, int, int
; glColor3us red, green, blue
; red : WORD -> "int"
; green : WORD -> "int"
; blue : WORD -> "int"

; void glColor3us(WORD red, WORD green, WORD blue)
#uselib "OPENGL32.dll"
#func global glColor3us "glColor3us" int, int, int
; glColor3us red, green, blue
; red : WORD -> "int"
; green : WORD -> "int"
; blue : WORD -> "int"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglColor3us = opengl32.NewProc("glColor3us")
)

// red (WORD), green (WORD), blue (WORD)
r1, _, err := procglColor3us.Call(
	uintptr(red),
	uintptr(green),
	uintptr(blue),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure glColor3us(
  red: Word;   // WORD
  green: Word;   // WORD
  blue: Word   // WORD
); stdcall;
  external 'OPENGL32.dll' name 'glColor3us';

result := DllCall("OPENGL32\glColor3us"
    , "UShort", red   ; WORD
    , "UShort", green   ; WORD
    , "UShort", blue   ; WORD
    , "Int")   ; return: void

●glColor3us(red, green, blue) = DLL("OPENGL32.dll", "int glColor3us(int, int, int)")
# 呼び出し: glColor3us(red, green, blue)
# red : WORD -> "int"
# green : WORD -> "int"
# blue : WORD -> "int"
# 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 "opengl32" fn glColor3us(
    red: u16, // WORD
    green: u16, // WORD
    blue: u16 // WORD
) callconv(std.os.windows.WINAPI) void;

proc glColor3us(
    red: uint16,  # WORD
    green: uint16,  # WORD
    blue: uint16  # WORD
) {.importc: "glColor3us", stdcall, dynlib: "OPENGL32.dll".}

pragma(lib, "opengl32");
extern(Windows)
void glColor3us(
    ushort red,   // WORD
    ushort green,   // WORD
    ushort blue   // WORD
);

ccall((:glColor3us, "OPENGL32.dll"), stdcall, Cvoid,
      (UInt16, UInt16, UInt16),
      red, green, blue)
# red : WORD -> UInt16
# green : WORD -> UInt16
# blue : WORD -> UInt16
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void glColor3us(
    uint16_t red,
    uint16_t green,
    uint16_t blue);
]]
local opengl32 = ffi.load("opengl32")
-- opengl32.glColor3us(red, green, blue)
-- red : WORD
-- green : WORD
-- blue : WORD
-- 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('OPENGL32.dll');
const glColor3us = lib.func('__stdcall', 'glColor3us', 'void', ['uint16_t', 'uint16_t', 'uint16_t']);
// glColor3us(red, green, blue)
// red : WORD -> 'uint16_t'
// green : WORD -> 'uint16_t'
// blue : WORD -> 'uint16_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("OPENGL32.dll", {
  glColor3us: { parameters: ["u16", "u16", "u16"], result: "void" },
});
// lib.symbols.glColor3us(red, green, blue)
// red : WORD -> "u16"
// green : WORD -> "u16"
// blue : WORD -> "u16"
// 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
void glColor3us(
    uint16_t red,
    uint16_t green,
    uint16_t blue);
C, "OPENGL32.dll");
// $ffi->glColor3us(red, green, blue);
// red : WORD
// green : WORD
// blue : WORD
// 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 Opengl32 extends StdCallLibrary {
    Opengl32 INSTANCE = Native.load("opengl32", Opengl32.class);
    void glColor3us(
        short red,   // WORD
        short green,   // WORD
        short blue   // WORD
    );
}

@[Link("opengl32")]
lib LibOPENGL32
  fun glColor3us = glColor3us(
    red : UInt16,   # WORD
    green : UInt16,   # WORD
    blue : UInt16   # WORD
  ) : Void
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 glColor3usNative = Void Function(Uint16, Uint16, Uint16);
typedef glColor3usDart = void Function(int, int, int);
final glColor3us = DynamicLibrary.open('OPENGL32.dll')
    .lookupFunction<glColor3usNative, glColor3usDart>('glColor3us');
// red : WORD -> Uint16
// green : WORD -> Uint16
// blue : WORD -> Uint16
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure glColor3us(
  red: Word;   // WORD
  green: Word;   // WORD
  blue: Word   // WORD
); stdcall;
  external 'OPENGL32.dll' name 'glColor3us';

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

foreign import stdcall safe "glColor3us"
  c_glColor3us :: Word16 -> Word16 -> Word16 -> IO ()
-- red : WORD -> Word16
-- green : WORD -> Word16
-- blue : WORD -> Word16
-- 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 glcolor3us =
  foreign "glColor3us"
    (uint16_t @-> uint16_t @-> uint16_t @-> returning void)
(* red : WORD -> uint16_t *)
(* green : WORD -> uint16_t *)
(* blue : WORD -> uint16_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 opengl32 (t "OPENGL32.dll"))
(cffi:use-foreign-library opengl32)

(cffi:defcfun ("glColor3us" gl-color3us :convention :stdcall) :void
  (red :uint16)   ; WORD
  (green :uint16)   ; WORD
  (blue :uint16))   ; WORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $glColor3us = Win32::API::More->new('OPENGL32',
    'void glColor3us(WORD red, WORD green, WORD blue)');
# my $ret = $glColor3us->Call($red, $green, $blue);
# red : WORD -> WORD
# green : WORD -> WORD
# blue : WORD -> WORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。