MFCreateSample

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

HRESULT MFCreateSample(
    IMFSample** ppIMFSample
);

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

' ppIMFSample : IMFSample** out
Declare PtrSafe Function MFCreateSample Lib "mfplat" ( _
    ByVal ppIMFSample 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

MFCreateSample = ctypes.windll.mfplat.MFCreateSample
MFCreateSample.restype = ctypes.c_int
MFCreateSample.argtypes = [
    ctypes.c_void_p,  # ppIMFSample : IMFSample** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateSample = Fiddle::Function.new(
  lib['MFCreateSample'],
  [
    Fiddle::TYPE_VOIDP,  # ppIMFSample : IMFSample** out
  ],
  Fiddle::TYPE_INT)

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

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

#uselib "MFPlat.dll"
#func global MFCreateSample "MFCreateSample" sptr
; MFCreateSample ppIMFSample   ; 戻り値は stat
; ppIMFSample : IMFSample** 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 MFCreateSample "MFCreateSample" sptr
; res = MFCreateSample(ppIMFSample)
; ppIMFSample : IMFSample** out -> "sptr"

; HRESULT MFCreateSample(IMFSample** ppIMFSample)
#uselib "MFPlat.dll"
#cfunc global MFCreateSample "MFCreateSample" intptr
; res = MFCreateSample(ppIMFSample)
; ppIMFSample : IMFSample** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateSample = mfplat.NewProc("MFCreateSample")
)

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

function MFCreateSample(
  ppIMFSample: Pointer   // IMFSample** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateSample';

result := DllCall("MFPlat\MFCreateSample"
    , "Ptr", ppIMFSample   ; IMFSample** out
    , "Int")   ; return: HRESULT

●MFCreateSample(ppIMFSample) = DLL("MFPlat.dll", "int MFCreateSample(void*)")
# 呼び出し: MFCreateSample(ppIMFSample)
# ppIMFSample : IMFSample** 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)。