MFGetPluginControl

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

HRESULT MFGetPluginControl(
    IMFPluginControl** ppPluginControl
);

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

' ppPluginControl : IMFPluginControl** out
Declare PtrSafe Function MFGetPluginControl Lib "mfplat" ( _
    ByVal ppPluginControl 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

MFGetPluginControl = ctypes.windll.mfplat.MFGetPluginControl
MFGetPluginControl.restype = ctypes.c_int
MFGetPluginControl.argtypes = [
    ctypes.c_void_p,  # ppPluginControl : IMFPluginControl** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFGetPluginControl = Fiddle::Function.new(
  lib['MFGetPluginControl'],
  [
    Fiddle::TYPE_VOIDP,  # ppPluginControl : IMFPluginControl** out
  ],
  Fiddle::TYPE_INT)

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

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

#uselib "MFPlat.dll"
#func global MFGetPluginControl "MFGetPluginControl" sptr
; MFGetPluginControl ppPluginControl   ; 戻り値は stat
; ppPluginControl : IMFPluginControl** 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 MFGetPluginControl "MFGetPluginControl" sptr
; res = MFGetPluginControl(ppPluginControl)
; ppPluginControl : IMFPluginControl** out -> "sptr"

; HRESULT MFGetPluginControl(IMFPluginControl** ppPluginControl)
#uselib "MFPlat.dll"
#cfunc global MFGetPluginControl "MFGetPluginControl" intptr
; res = MFGetPluginControl(ppPluginControl)
; ppPluginControl : IMFPluginControl** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFGetPluginControl = mfplat.NewProc("MFGetPluginControl")
)

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

function MFGetPluginControl(
  ppPluginControl: Pointer   // IMFPluginControl** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFGetPluginControl';

result := DllCall("MFPlat\MFGetPluginControl"
    , "Ptr", ppPluginControl   ; IMFPluginControl** out
    , "Int")   ; return: HRESULT

●MFGetPluginControl(ppPluginControl) = DLL("MFPlat.dll", "int MFGetPluginControl(void*)")
# 呼び出し: MFGetPluginControl(ppPluginControl)
# ppPluginControl : IMFPluginControl** 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)。