D3D12GetInterface

// d3d12.dll
#include <windows.h>

HRESULT D3D12GetInterface(
    const GUID* rclsid,
    const GUID* riid,
    void** ppvDebug   // optional
);

<DllImport("d3d12.dll", ExactSpelling:=True)>
Public Shared Function D3D12GetInterface(
    ByRef rclsid As Guid,   ' GUID*
    ByRef riid As Guid,   ' GUID*
    ppvDebug As IntPtr   ' void** optional, out
) As Integer
End Function

' rclsid : GUID*
' riid : GUID*
' ppvDebug : void** optional, out
Declare PtrSafe Function D3D12GetInterface Lib "d3d12" ( _
    ByVal rclsid As LongPtr, _
    ByVal riid As LongPtr, _
    ByVal ppvDebug 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

D3D12GetInterface = ctypes.windll.d3d12.D3D12GetInterface
D3D12GetInterface.restype = ctypes.c_int
D3D12GetInterface.argtypes = [
    ctypes.c_void_p,  # rclsid : GUID*
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppvDebug : void** optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('d3d12.dll')
D3D12GetInterface = Fiddle::Function.new(
  lib['D3D12GetInterface'],
  [
    Fiddle::TYPE_VOIDP,  # rclsid : GUID*
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppvDebug : void** optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "d3d12")]
extern "system" {
    fn D3D12GetInterface(
        rclsid: *const GUID,  // GUID*
        riid: *const GUID,  // GUID*
        ppvDebug: *mut *mut ()  // void** optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("d3d12.dll")]
public static extern int D3D12GetInterface(ref Guid rclsid, ref Guid riid, IntPtr ppvDebug);
"@
$api = Add-Type -MemberDefinition $sig -Name 'd3d12_D3D12GetInterface' -Namespace Win32 -PassThru
# $api::D3D12GetInterface(rclsid, riid, ppvDebug)

#uselib "d3d12.dll"
#func global D3D12GetInterface "D3D12GetInterface" sptr, sptr, sptr
; D3D12GetInterface varptr(rclsid), varptr(riid), ppvDebug   ; 戻り値は stat
; rclsid : GUID* -> "sptr"
; riid : GUID* -> "sptr"
; ppvDebug : void** 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。

#uselib "d3d12.dll"
#cfunc global D3D12GetInterface "D3D12GetInterface" var, var, sptr
; res = D3D12GetInterface(rclsid, riid, ppvDebug)
; rclsid : GUID* -> "var"
; riid : GUID* -> "var"
; ppvDebug : void** optional, 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 D3D12GetInterface(GUID* rclsid, GUID* riid, void** ppvDebug)
#uselib "d3d12.dll"
#cfunc global D3D12GetInterface "D3D12GetInterface" var, var, intptr
; res = D3D12GetInterface(rclsid, riid, ppvDebug)
; rclsid : GUID* -> "var"
; riid : GUID* -> "var"
; ppvDebug : void** optional, 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 (
	d3d12 = windows.NewLazySystemDLL("d3d12.dll")
	procD3D12GetInterface = d3d12.NewProc("D3D12GetInterface")
)

// rclsid (GUID*), riid (GUID*), ppvDebug (void** optional, out)
r1, _, err := procD3D12GetInterface.Call(
	uintptr(rclsid),
	uintptr(riid),
	uintptr(ppvDebug),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function D3D12GetInterface(
  rclsid: PGUID;   // GUID*
  riid: PGUID;   // GUID*
  ppvDebug: Pointer   // void** optional, out
): Integer; stdcall;
  external 'd3d12.dll' name 'D3D12GetInterface';

result := DllCall("d3d12\D3D12GetInterface"
    , "Ptr", rclsid   ; GUID*
    , "Ptr", riid   ; GUID*
    , "Ptr", ppvDebug   ; void** optional, out
    , "Int")   ; return: HRESULT

●D3D12GetInterface(rclsid, riid, ppvDebug) = DLL("d3d12.dll", "int D3D12GetInterface(void*, void*, void*)")
# 呼び出し: D3D12GetInterface(rclsid, riid, ppvDebug)
# rclsid : GUID* -> "void*"
# riid : GUID* -> "void*"
# ppvDebug : void** 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)。