CreateDXGIFactory2

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

HRESULT CreateDXGIFactory2(
    DXGI_CREATE_FACTORY_FLAGS Flags,
    const GUID* riid,
    void** ppFactory
);

<DllImport("dxgi.dll", ExactSpelling:=True)>
Public Shared Function CreateDXGIFactory2(
    Flags As UInteger,   ' DXGI_CREATE_FACTORY_FLAGS
    ByRef riid As Guid,   ' GUID*
    ppFactory As IntPtr   ' void** out
) As Integer
End Function

' Flags : DXGI_CREATE_FACTORY_FLAGS
' riid : GUID*
' ppFactory : void** out
Declare PtrSafe Function CreateDXGIFactory2 Lib "dxgi" ( _
    ByVal Flags As Long, _
    ByVal riid As LongPtr, _
    ByVal ppFactory 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

CreateDXGIFactory2 = ctypes.windll.dxgi.CreateDXGIFactory2
CreateDXGIFactory2.restype = ctypes.c_int
CreateDXGIFactory2.argtypes = [
    wintypes.DWORD,  # Flags : DXGI_CREATE_FACTORY_FLAGS
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppFactory : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dxgi.dll')
CreateDXGIFactory2 = Fiddle::Function.new(
  lib['CreateDXGIFactory2'],
  [
    -Fiddle::TYPE_INT,  # Flags : DXGI_CREATE_FACTORY_FLAGS
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppFactory : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dxgi")]
extern "system" {
    fn CreateDXGIFactory2(
        Flags: u32,  // DXGI_CREATE_FACTORY_FLAGS
        riid: *const GUID,  // GUID*
        ppFactory: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dxgi.dll")]
public static extern int CreateDXGIFactory2(uint Flags, ref Guid riid, IntPtr ppFactory);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dxgi_CreateDXGIFactory2' -Namespace Win32 -PassThru
# $api::CreateDXGIFactory2(Flags, riid, ppFactory)

#uselib "dxgi.dll"
#func global CreateDXGIFactory2 "CreateDXGIFactory2" sptr, sptr, sptr
; CreateDXGIFactory2 Flags, varptr(riid), ppFactory   ; 戻り値は stat
; Flags : DXGI_CREATE_FACTORY_FLAGS -> "sptr"
; riid : GUID* -> "sptr"
; ppFactory : void** 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。

#uselib "dxgi.dll"
#cfunc global CreateDXGIFactory2 "CreateDXGIFactory2" int, var, sptr
; res = CreateDXGIFactory2(Flags, riid, ppFactory)
; Flags : DXGI_CREATE_FACTORY_FLAGS -> "int"
; riid : GUID* -> "var"
; ppFactory : void** out -> "sptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT CreateDXGIFactory2(DXGI_CREATE_FACTORY_FLAGS Flags, GUID* riid, void** ppFactory)
#uselib "dxgi.dll"
#cfunc global CreateDXGIFactory2 "CreateDXGIFactory2" int, var, intptr
; res = CreateDXGIFactory2(Flags, riid, ppFactory)
; Flags : DXGI_CREATE_FACTORY_FLAGS -> "int"
; riid : GUID* -> "var"
; ppFactory : void** out -> "intptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	dxgi = windows.NewLazySystemDLL("dxgi.dll")
	procCreateDXGIFactory2 = dxgi.NewProc("CreateDXGIFactory2")
)

// Flags (DXGI_CREATE_FACTORY_FLAGS), riid (GUID*), ppFactory (void** out)
r1, _, err := procCreateDXGIFactory2.Call(
	uintptr(Flags),
	uintptr(riid),
	uintptr(ppFactory),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CreateDXGIFactory2(
  Flags: DWORD;   // DXGI_CREATE_FACTORY_FLAGS
  riid: PGUID;   // GUID*
  ppFactory: Pointer   // void** out
): Integer; stdcall;
  external 'dxgi.dll' name 'CreateDXGIFactory2';

result := DllCall("dxgi\CreateDXGIFactory2"
    , "UInt", Flags   ; DXGI_CREATE_FACTORY_FLAGS
    , "Ptr", riid   ; GUID*
    , "Ptr", ppFactory   ; void** out
    , "Int")   ; return: HRESULT

●CreateDXGIFactory2(Flags, riid, ppFactory) = DLL("dxgi.dll", "int CreateDXGIFactory2(dword, void*, void*)")
# 呼び出し: CreateDXGIFactory2(Flags, riid, ppFactory)
# Flags : DXGI_CREATE_FACTORY_FLAGS -> "dword"
# riid : GUID* -> "void*"
# ppFactory : void** 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)。