glGetMapiv

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

void glGetMapiv(
    DWORD target,
    DWORD query,
    INT* v
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glGetMapiv(
    target As UInteger,   ' DWORD
    query As UInteger,   ' DWORD
    ByRef v As Integer   ' INT* in/out
)
End Sub

' target : DWORD
' query : DWORD
' v : INT* in/out
Declare PtrSafe Sub glGetMapiv Lib "opengl32" ( _
    ByVal target As Long, _
    ByVal query As Long, _
    ByRef v As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glGetMapiv = ctypes.windll.opengl32.glGetMapiv
glGetMapiv.restype = None
glGetMapiv.argtypes = [
    wintypes.DWORD,  # target : DWORD
    wintypes.DWORD,  # query : DWORD
    ctypes.POINTER(ctypes.c_int),  # v : INT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glGetMapiv = Fiddle::Function.new(
  lib['glGetMapiv'],
  [
    -Fiddle::TYPE_INT,  # target : DWORD
    -Fiddle::TYPE_INT,  # query : DWORD
    Fiddle::TYPE_VOIDP,  # v : INT* in/out
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glGetMapiv(
        target: u32,  // DWORD
        query: u32,  // DWORD
        v: *mut i32  // INT* in/out
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glGetMapiv(uint target, uint query, ref int v);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glGetMapiv' -Namespace Win32 -PassThru
# $api::glGetMapiv(target, query, v)

#uselib "OPENGL32.dll"
#func global glGetMapiv "glGetMapiv" sptr, sptr, sptr
; glGetMapiv target, query, varptr(v)
; target : DWORD -> "sptr"
; query : DWORD -> "sptr"
; v : INT* in/out -> "sptr"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglGetMapiv = opengl32.NewProc("glGetMapiv")
)

// target (DWORD), query (DWORD), v (INT* in/out)
r1, _, err := procglGetMapiv.Call(
	uintptr(target),
	uintptr(query),
	uintptr(v),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure glGetMapiv(
  target: DWORD;   // DWORD
  query: DWORD;   // DWORD
  v: Pointer   // INT* in/out
); stdcall;
  external 'OPENGL32.dll' name 'glGetMapiv';

result := DllCall("OPENGL32\glGetMapiv"
    , "UInt", target   ; DWORD
    , "UInt", query   ; DWORD
    , "Ptr", v   ; INT* in/out
    , "Int")   ; return: void

●glGetMapiv(target, query, v) = DLL("OPENGL32.dll", "int glGetMapiv(dword, dword, void*)")
# 呼び出し: glGetMapiv(target, query, v)
# target : DWORD -> "dword"
# query : DWORD -> "dword"
# v : INT* 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 "opengl32" fn glGetMapiv(
    target: u32, // DWORD
    query: u32, // DWORD
    v: [*c]i32 // INT* in/out
) callconv(std.os.windows.WINAPI) void;

proc glGetMapiv(
    target: uint32,  # DWORD
    query: uint32,  # DWORD
    v: ptr int32  # INT* in/out
) {.importc: "glGetMapiv", stdcall, dynlib: "OPENGL32.dll".}

pragma(lib, "opengl32");
extern(Windows)
void glGetMapiv(
    uint target,   // DWORD
    uint query,   // DWORD
    int* v   // INT* in/out
);

ccall((:glGetMapiv, "OPENGL32.dll"), stdcall, Cvoid,
      (UInt32, UInt32, Ptr{Int32}),
      target, query, v)
# target : DWORD -> UInt32
# query : DWORD -> UInt32
# v : INT* in/out -> Ptr{Int32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void glGetMapiv(
    uint32_t target,
    uint32_t query,
    int32_t* v);
]]
local opengl32 = ffi.load("opengl32")
-- opengl32.glGetMapiv(target, query, v)
-- target : DWORD
-- query : DWORD
-- v : INT* 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('OPENGL32.dll');
const glGetMapiv = lib.func('__stdcall', 'glGetMapiv', 'void', ['uint32_t', 'uint32_t', 'int32_t *']);
// glGetMapiv(target, query, v)
// target : DWORD -> 'uint32_t'
// query : DWORD -> 'uint32_t'
// v : INT* in/out -> 'int32_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", {
  glGetMapiv: { parameters: ["u32", "u32", "pointer"], result: "void" },
});
// lib.symbols.glGetMapiv(target, query, v)
// target : DWORD -> "u32"
// query : DWORD -> "u32"
// v : INT* 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
void glGetMapiv(
    uint32_t target,
    uint32_t query,
    int32_t* v);
C, "OPENGL32.dll");
// $ffi->glGetMapiv(target, query, v);
// target : DWORD
// query : DWORD
// v : INT* 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 Opengl32 extends StdCallLibrary {
    Opengl32 INSTANCE = Native.load("opengl32", Opengl32.class);
    void glGetMapiv(
        int target,   // DWORD
        int query,   // DWORD
        IntByReference v   // INT* in/out
    );
}

@[Link("opengl32")]
lib LibOPENGL32
  fun glGetMapiv = glGetMapiv(
    target : UInt32,   # DWORD
    query : UInt32,   # DWORD
    v : Int32*   # INT* in/out
  ) : 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 glGetMapivNative = Void Function(Uint32, Uint32, Pointer<Int32>);
typedef glGetMapivDart = void Function(int, int, Pointer<Int32>);
final glGetMapiv = DynamicLibrary.open('OPENGL32.dll')
    .lookupFunction<glGetMapivNative, glGetMapivDart>('glGetMapiv');
// target : DWORD -> Uint32
// query : DWORD -> Uint32
// v : INT* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure glGetMapiv(
  target: DWORD;   // DWORD
  query: DWORD;   // DWORD
  v: Pointer   // INT* in/out
); stdcall;
  external 'OPENGL32.dll' name 'glGetMapiv';

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

foreign import stdcall safe "glGetMapiv"
  c_glGetMapiv :: Word32 -> Word32 -> Ptr Int32 -> IO ()
-- target : DWORD -> Word32
-- query : DWORD -> Word32
-- v : INT* in/out -> Ptr Int32
-- 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 glgetmapiv =
  foreign "glGetMapiv"
    (uint32_t @-> uint32_t @-> (ptr int32_t) @-> returning void)
(* target : DWORD -> uint32_t *)
(* query : DWORD -> uint32_t *)
(* v : INT* in/out -> (ptr int32_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 ("glGetMapiv" gl-get-mapiv :convention :stdcall) :void
  (target :uint32)   ; DWORD
  (query :uint32)   ; DWORD
  (v :pointer))   ; INT* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $glGetMapiv = Win32::API::More->new('OPENGL32',
    'void glGetMapiv(DWORD target, DWORD query, LPVOID v)');
# my $ret = $glGetMapiv->Call($target, $query, $v);
# target : DWORD -> DWORD
# query : DWORD -> DWORD
# v : INT* 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。