MFCreateEventQueue

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

HRESULT MFCreateEventQueue(
    IMFMediaEventQueue** ppMediaEventQueue
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateEventQueue(
    ppMediaEventQueue As IntPtr   ' IMFMediaEventQueue** out
) As Integer
End Function

' ppMediaEventQueue : IMFMediaEventQueue** out
Declare PtrSafe Function MFCreateEventQueue Lib "mfplat" ( _
    ByVal ppMediaEventQueue 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

MFCreateEventQueue = ctypes.windll.mfplat.MFCreateEventQueue
MFCreateEventQueue.restype = ctypes.c_int
MFCreateEventQueue.argtypes = [
    ctypes.c_void_p,  # ppMediaEventQueue : IMFMediaEventQueue** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateEventQueue = Fiddle::Function.new(
  lib['MFCreateEventQueue'],
  [
    Fiddle::TYPE_VOIDP,  # ppMediaEventQueue : IMFMediaEventQueue** out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFCreateEventQueue(IntPtr ppMediaEventQueue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateEventQueue' -Namespace Win32 -PassThru
# $api::MFCreateEventQueue(ppMediaEventQueue)

#uselib "MFPlat.dll"
#func global MFCreateEventQueue "MFCreateEventQueue" sptr
; MFCreateEventQueue ppMediaEventQueue   ; 戻り値は stat
; ppMediaEventQueue : IMFMediaEventQueue** 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 "MFPlat.dll"
#cfunc global MFCreateEventQueue "MFCreateEventQueue" sptr
; res = MFCreateEventQueue(ppMediaEventQueue)
; ppMediaEventQueue : IMFMediaEventQueue** out -> "sptr"

; HRESULT MFCreateEventQueue(IMFMediaEventQueue** ppMediaEventQueue)
#uselib "MFPlat.dll"
#cfunc global MFCreateEventQueue "MFCreateEventQueue" intptr
; res = MFCreateEventQueue(ppMediaEventQueue)
; ppMediaEventQueue : IMFMediaEventQueue** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateEventQueue = mfplat.NewProc("MFCreateEventQueue")
)

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

function MFCreateEventQueue(
  ppMediaEventQueue: Pointer   // IMFMediaEventQueue** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateEventQueue';

result := DllCall("MFPlat\MFCreateEventQueue"
    , "Ptr", ppMediaEventQueue   ; IMFMediaEventQueue** out
    , "Int")   ; return: HRESULT

●MFCreateEventQueue(ppMediaEventQueue) = DLL("MFPlat.dll", "int MFCreateEventQueue(void*)")
# 呼び出し: MFCreateEventQueue(ppMediaEventQueue)
# ppMediaEventQueue : IMFMediaEventQueue** 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)。