MFCreateTopoLoader

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

HRESULT MFCreateTopoLoader(
    IMFTopoLoader** ppObj
);

<DllImport("MF.dll", ExactSpelling:=True)>
Public Shared Function MFCreateTopoLoader(
    ppObj As IntPtr   ' IMFTopoLoader** out
) As Integer
End Function

' ppObj : IMFTopoLoader** out
Declare PtrSafe Function MFCreateTopoLoader Lib "mf" ( _
    ByVal ppObj 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

MFCreateTopoLoader = ctypes.windll.mf.MFCreateTopoLoader
MFCreateTopoLoader.restype = ctypes.c_int
MFCreateTopoLoader.argtypes = [
    ctypes.c_void_p,  # ppObj : IMFTopoLoader** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MF.dll')
MFCreateTopoLoader = Fiddle::Function.new(
  lib['MFCreateTopoLoader'],
  [
    Fiddle::TYPE_VOIDP,  # ppObj : IMFTopoLoader** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mf")]
extern "system" {
    fn MFCreateTopoLoader(
        ppObj: *mut *mut core::ffi::c_void  // IMFTopoLoader** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MF.dll")]
public static extern int MFCreateTopoLoader(IntPtr ppObj);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MF_MFCreateTopoLoader' -Namespace Win32 -PassThru
# $api::MFCreateTopoLoader(ppObj)

#uselib "MF.dll"
#func global MFCreateTopoLoader "MFCreateTopoLoader" sptr
; MFCreateTopoLoader ppObj   ; 戻り値は stat
; ppObj : IMFTopoLoader** 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 "MF.dll"
#cfunc global MFCreateTopoLoader "MFCreateTopoLoader" sptr
; res = MFCreateTopoLoader(ppObj)
; ppObj : IMFTopoLoader** out -> "sptr"

; HRESULT MFCreateTopoLoader(IMFTopoLoader** ppObj)
#uselib "MF.dll"
#cfunc global MFCreateTopoLoader "MFCreateTopoLoader" intptr
; res = MFCreateTopoLoader(ppObj)
; ppObj : IMFTopoLoader** out -> "intptr"

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

var (
	mf = windows.NewLazySystemDLL("MF.dll")
	procMFCreateTopoLoader = mf.NewProc("MFCreateTopoLoader")
)

// ppObj (IMFTopoLoader** out)
r1, _, err := procMFCreateTopoLoader.Call(
	uintptr(ppObj),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateTopoLoader(
  ppObj: Pointer   // IMFTopoLoader** out
): Integer; stdcall;
  external 'MF.dll' name 'MFCreateTopoLoader';

result := DllCall("MF\MFCreateTopoLoader"
    , "Ptr", ppObj   ; IMFTopoLoader** out
    , "Int")   ; return: HRESULT

●MFCreateTopoLoader(ppObj) = DLL("MF.dll", "int MFCreateTopoLoader(void*)")
# 呼び出し: MFCreateTopoLoader(ppObj)
# ppObj : IMFTopoLoader** 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)。