GetVCPFeatureAndVCPFeatureReply

// dxva2.dll
#include <windows.h>

INT GetVCPFeatureAndVCPFeatureReply(
    HANDLE hMonitor,
    BYTE bVCPCode,
    MC_VCP_CODE_TYPE* pvct,   // optional
    DWORD* pdwCurrentValue,
    DWORD* pdwMaximumValue   // optional
);

<DllImport("dxva2.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetVCPFeatureAndVCPFeatureReply(
    hMonitor As IntPtr,   ' HANDLE
    bVCPCode As Byte,   ' BYTE
    pvct As IntPtr,   ' MC_VCP_CODE_TYPE* optional, out
    <Out> ByRef pdwCurrentValue As UInteger,   ' DWORD* out
    pdwMaximumValue As IntPtr   ' DWORD* optional, out
) As Integer
End Function

' hMonitor : HANDLE
' bVCPCode : BYTE
' pvct : MC_VCP_CODE_TYPE* optional, out
' pdwCurrentValue : DWORD* out
' pdwMaximumValue : DWORD* optional, out
Declare PtrSafe Function GetVCPFeatureAndVCPFeatureReply Lib "dxva2" ( _
    ByVal hMonitor As LongPtr, _
    ByVal bVCPCode As Byte, _
    ByVal pvct As LongPtr, _
    ByRef pdwCurrentValue As Long, _
    ByVal pdwMaximumValue 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

GetVCPFeatureAndVCPFeatureReply = ctypes.windll.dxva2.GetVCPFeatureAndVCPFeatureReply
GetVCPFeatureAndVCPFeatureReply.restype = ctypes.c_int
GetVCPFeatureAndVCPFeatureReply.argtypes = [
    wintypes.HANDLE,  # hMonitor : HANDLE
    ctypes.c_ubyte,  # bVCPCode : BYTE
    ctypes.c_void_p,  # pvct : MC_VCP_CODE_TYPE* optional, out
    ctypes.POINTER(wintypes.DWORD),  # pdwCurrentValue : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # pdwMaximumValue : DWORD* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dxva2.dll')
GetVCPFeatureAndVCPFeatureReply = Fiddle::Function.new(
  lib['GetVCPFeatureAndVCPFeatureReply'],
  [
    Fiddle::TYPE_VOIDP,  # hMonitor : HANDLE
    -Fiddle::TYPE_CHAR,  # bVCPCode : BYTE
    Fiddle::TYPE_VOIDP,  # pvct : MC_VCP_CODE_TYPE* optional, out
    Fiddle::TYPE_VOIDP,  # pdwCurrentValue : DWORD* out
    Fiddle::TYPE_VOIDP,  # pdwMaximumValue : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dxva2")]
extern "system" {
    fn GetVCPFeatureAndVCPFeatureReply(
        hMonitor: *mut core::ffi::c_void,  // HANDLE
        bVCPCode: u8,  // BYTE
        pvct: *mut i32,  // MC_VCP_CODE_TYPE* optional, out
        pdwCurrentValue: *mut u32,  // DWORD* out
        pdwMaximumValue: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dxva2.dll", SetLastError = true)]
public static extern int GetVCPFeatureAndVCPFeatureReply(IntPtr hMonitor, byte bVCPCode, IntPtr pvct, out uint pdwCurrentValue, IntPtr pdwMaximumValue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dxva2_GetVCPFeatureAndVCPFeatureReply' -Namespace Win32 -PassThru
# $api::GetVCPFeatureAndVCPFeatureReply(hMonitor, bVCPCode, pvct, pdwCurrentValue, pdwMaximumValue)

#uselib "dxva2.dll"
#func global GetVCPFeatureAndVCPFeatureReply "GetVCPFeatureAndVCPFeatureReply" sptr, sptr, sptr, sptr, sptr
; GetVCPFeatureAndVCPFeatureReply hMonitor, bVCPCode, varptr(pvct), varptr(pdwCurrentValue), varptr(pdwMaximumValue)   ; 戻り値は stat
; hMonitor : HANDLE -> "sptr"
; bVCPCode : BYTE -> "sptr"
; pvct : MC_VCP_CODE_TYPE* optional, out -> "sptr"
; pdwCurrentValue : DWORD* out -> "sptr"
; pdwMaximumValue : 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 (
	dxva2 = windows.NewLazySystemDLL("dxva2.dll")
	procGetVCPFeatureAndVCPFeatureReply = dxva2.NewProc("GetVCPFeatureAndVCPFeatureReply")
)

// hMonitor (HANDLE), bVCPCode (BYTE), pvct (MC_VCP_CODE_TYPE* optional, out), pdwCurrentValue (DWORD* out), pdwMaximumValue (DWORD* optional, out)
r1, _, err := procGetVCPFeatureAndVCPFeatureReply.Call(
	uintptr(hMonitor),
	uintptr(bVCPCode),
	uintptr(pvct),
	uintptr(pdwCurrentValue),
	uintptr(pdwMaximumValue),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function GetVCPFeatureAndVCPFeatureReply(
  hMonitor: THandle;   // HANDLE
  bVCPCode: Byte;   // BYTE
  pvct: Pointer;   // MC_VCP_CODE_TYPE* optional, out
  pdwCurrentValue: Pointer;   // DWORD* out
  pdwMaximumValue: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'dxva2.dll' name 'GetVCPFeatureAndVCPFeatureReply';

result := DllCall("dxva2\GetVCPFeatureAndVCPFeatureReply"
    , "Ptr", hMonitor   ; HANDLE
    , "UChar", bVCPCode   ; BYTE
    , "Ptr", pvct   ; MC_VCP_CODE_TYPE* optional, out
    , "Ptr", pdwCurrentValue   ; DWORD* out
    , "Ptr", pdwMaximumValue   ; DWORD* optional, out
    , "Int")   ; return: INT

●GetVCPFeatureAndVCPFeatureReply(hMonitor, bVCPCode, pvct, pdwCurrentValue, pdwMaximumValue) = DLL("dxva2.dll", "int GetVCPFeatureAndVCPFeatureReply(void*, byte, void*, void*, void*)")
# 呼び出し: GetVCPFeatureAndVCPFeatureReply(hMonitor, bVCPCode, pvct, pdwCurrentValue, pdwMaximumValue)
# hMonitor : HANDLE -> "void*"
# bVCPCode : BYTE -> "byte"
# pvct : MC_VCP_CODE_TYPE* optional, out -> "void*"
# pdwCurrentValue : DWORD* out -> "void*"
# pdwMaximumValue : 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 "dxva2" fn GetVCPFeatureAndVCPFeatureReply(
    hMonitor: ?*anyopaque, // HANDLE
    bVCPCode: u8, // BYTE
    pvct: [*c]i32, // MC_VCP_CODE_TYPE* optional, out
    pdwCurrentValue: [*c]u32, // DWORD* out
    pdwMaximumValue: [*c]u32 // DWORD* optional, out
) callconv(std.os.windows.WINAPI) i32;

proc GetVCPFeatureAndVCPFeatureReply(
    hMonitor: pointer,  # HANDLE
    bVCPCode: uint8,  # BYTE
    pvct: ptr int32,  # MC_VCP_CODE_TYPE* optional, out
    pdwCurrentValue: ptr uint32,  # DWORD* out
    pdwMaximumValue: ptr uint32  # DWORD* optional, out
): int32 {.importc: "GetVCPFeatureAndVCPFeatureReply", stdcall, dynlib: "dxva2.dll".}

pragma(lib, "dxva2");
extern(Windows)
int GetVCPFeatureAndVCPFeatureReply(
    void* hMonitor,   // HANDLE
    ubyte bVCPCode,   // BYTE
    int* pvct,   // MC_VCP_CODE_TYPE* optional, out
    uint* pdwCurrentValue,   // DWORD* out
    uint* pdwMaximumValue   // DWORD* optional, out
);

ccall((:GetVCPFeatureAndVCPFeatureReply, "dxva2.dll"), stdcall, Int32,
      (Ptr{Cvoid}, UInt8, Ptr{Int32}, Ptr{UInt32}, Ptr{UInt32}),
      hMonitor, bVCPCode, pvct, pdwCurrentValue, pdwMaximumValue)
# hMonitor : HANDLE -> Ptr{Cvoid}
# bVCPCode : BYTE -> UInt8
# pvct : MC_VCP_CODE_TYPE* optional, out -> Ptr{Int32}
# pdwCurrentValue : DWORD* out -> Ptr{UInt32}
# pdwMaximumValue : 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 GetVCPFeatureAndVCPFeatureReply(
    void* hMonitor,
    uint8_t bVCPCode,
    int32_t* pvct,
    uint32_t* pdwCurrentValue,
    uint32_t* pdwMaximumValue);
]]
local dxva2 = ffi.load("dxva2")
-- dxva2.GetVCPFeatureAndVCPFeatureReply(hMonitor, bVCPCode, pvct, pdwCurrentValue, pdwMaximumValue)
-- hMonitor : HANDLE
-- bVCPCode : BYTE
-- pvct : MC_VCP_CODE_TYPE* optional, out
-- pdwCurrentValue : DWORD* out
-- pdwMaximumValue : 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('dxva2.dll');
const GetVCPFeatureAndVCPFeatureReply = lib.func('__stdcall', 'GetVCPFeatureAndVCPFeatureReply', 'int32_t', ['void *', 'uint8_t', 'int32_t *', 'uint32_t *', 'uint32_t *']);
// GetVCPFeatureAndVCPFeatureReply(hMonitor, bVCPCode, pvct, pdwCurrentValue, pdwMaximumValue)
// hMonitor : HANDLE -> 'void *'
// bVCPCode : BYTE -> 'uint8_t'
// pvct : MC_VCP_CODE_TYPE* optional, out -> 'int32_t *'
// pdwCurrentValue : DWORD* out -> 'uint32_t *'
// pdwMaximumValue : 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("dxva2.dll", {
  GetVCPFeatureAndVCPFeatureReply: { parameters: ["pointer", "u8", "pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.GetVCPFeatureAndVCPFeatureReply(hMonitor, bVCPCode, pvct, pdwCurrentValue, pdwMaximumValue)
// hMonitor : HANDLE -> "pointer"
// bVCPCode : BYTE -> "u8"
// pvct : MC_VCP_CODE_TYPE* optional, out -> "pointer"
// pdwCurrentValue : DWORD* out -> "pointer"
// pdwMaximumValue : 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 GetVCPFeatureAndVCPFeatureReply(
    void* hMonitor,
    uint8_t bVCPCode,
    int32_t* pvct,
    uint32_t* pdwCurrentValue,
    uint32_t* pdwMaximumValue);
C, "dxva2.dll");
// $ffi->GetVCPFeatureAndVCPFeatureReply(hMonitor, bVCPCode, pvct, pdwCurrentValue, pdwMaximumValue);
// hMonitor : HANDLE
// bVCPCode : BYTE
// pvct : MC_VCP_CODE_TYPE* optional, out
// pdwCurrentValue : DWORD* out
// pdwMaximumValue : 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 Dxva2 extends StdCallLibrary {
    Dxva2 INSTANCE = Native.load("dxva2", Dxva2.class);
    int GetVCPFeatureAndVCPFeatureReply(
        Pointer hMonitor,   // HANDLE
        byte bVCPCode,   // BYTE
        IntByReference pvct,   // MC_VCP_CODE_TYPE* optional, out
        IntByReference pdwCurrentValue,   // DWORD* out
        IntByReference pdwMaximumValue   // DWORD* optional, out
    );
}

@[Link("dxva2")]
lib Libdxva2
  fun GetVCPFeatureAndVCPFeatureReply = GetVCPFeatureAndVCPFeatureReply(
    hMonitor : Void*,   # HANDLE
    bVCPCode : UInt8,   # BYTE
    pvct : Int32*,   # MC_VCP_CODE_TYPE* optional, out
    pdwCurrentValue : UInt32*,   # DWORD* out
    pdwMaximumValue : 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 GetVCPFeatureAndVCPFeatureReplyNative = Int32 Function(Pointer<Void>, Uint8, Pointer<Int32>, Pointer<Uint32>, Pointer<Uint32>);
typedef GetVCPFeatureAndVCPFeatureReplyDart = int Function(Pointer<Void>, int, Pointer<Int32>, Pointer<Uint32>, Pointer<Uint32>);
final GetVCPFeatureAndVCPFeatureReply = DynamicLibrary.open('dxva2.dll')
    .lookupFunction<GetVCPFeatureAndVCPFeatureReplyNative, GetVCPFeatureAndVCPFeatureReplyDart>('GetVCPFeatureAndVCPFeatureReply');
// hMonitor : HANDLE -> Pointer<Void>
// bVCPCode : BYTE -> Uint8
// pvct : MC_VCP_CODE_TYPE* optional, out -> Pointer<Int32>
// pdwCurrentValue : DWORD* out -> Pointer<Uint32>
// pdwMaximumValue : DWORD* optional, out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetVCPFeatureAndVCPFeatureReply(
  hMonitor: THandle;   // HANDLE
  bVCPCode: Byte;   // BYTE
  pvct: Pointer;   // MC_VCP_CODE_TYPE* optional, out
  pdwCurrentValue: Pointer;   // DWORD* out
  pdwMaximumValue: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'dxva2.dll' name 'GetVCPFeatureAndVCPFeatureReply';

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

foreign import stdcall safe "GetVCPFeatureAndVCPFeatureReply"
  c_GetVCPFeatureAndVCPFeatureReply :: Ptr () -> Word8 -> Ptr Int32 -> Ptr Word32 -> Ptr Word32 -> IO Int32
-- hMonitor : HANDLE -> Ptr ()
-- bVCPCode : BYTE -> Word8
-- pvct : MC_VCP_CODE_TYPE* optional, out -> Ptr Int32
-- pdwCurrentValue : DWORD* out -> Ptr Word32
-- pdwMaximumValue : 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 getvcpfeatureandvcpfeaturereply =
  foreign "GetVCPFeatureAndVCPFeatureReply"
    ((ptr void) @-> uint8_t @-> (ptr int32_t) @-> (ptr uint32_t) @-> (ptr uint32_t) @-> returning int32_t)
(* hMonitor : HANDLE -> (ptr void) *)
(* bVCPCode : BYTE -> uint8_t *)
(* pvct : MC_VCP_CODE_TYPE* optional, out -> (ptr int32_t) *)
(* pdwCurrentValue : DWORD* out -> (ptr uint32_t) *)
(* pdwMaximumValue : 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 dxva2 (t "dxva2.dll"))
(cffi:use-foreign-library dxva2)

(cffi:defcfun ("GetVCPFeatureAndVCPFeatureReply" get-vcpfeature-and-vcpfeature-reply :convention :stdcall) :int32
  (h-monitor :pointer)   ; HANDLE
  (b-vcpcode :uint8)   ; BYTE
  (pvct :pointer)   ; MC_VCP_CODE_TYPE* optional, out
  (pdw-current-value :pointer)   ; DWORD* out
  (pdw-maximum-value :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 $GetVCPFeatureAndVCPFeatureReply = Win32::API::More->new('dxva2',
    'int GetVCPFeatureAndVCPFeatureReply(HANDLE hMonitor, BYTE bVCPCode, LPVOID pvct, LPVOID pdwCurrentValue, LPVOID pdwMaximumValue)');
# my $ret = $GetVCPFeatureAndVCPFeatureReply->Call($hMonitor, $bVCPCode, $pvct, $pdwCurrentValue, $pdwMaximumValue);
# hMonitor : HANDLE -> HANDLE
# bVCPCode : BYTE -> BYTE
# pvct : MC_VCP_CODE_TYPE* optional, out -> LPVOID
# pdwCurrentValue : DWORD* out -> LPVOID
# pdwMaximumValue : 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。