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MFCreateDeviceSourceActivate

関数

キャプチャデバイスソースのアクティベートオブジェクトを生成する。

DLLMF.dll呼出規約winapi対応OSWindows 7 以降

シグネチャ

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

HRESULT MFCreateDeviceSourceActivate(
    IMFAttributes* pAttributes,
    IMFActivate** ppActivate
);

パラメーター

名前	型	方向	説明
pAttributes	IMFAttributes*	in	対象機器を指定する属性を保持する IMFAttributes ポインタ。
ppActivate	IMFActivate**	out	遅延生成用のアクティブ化オブジェクト IMFActivate を受け取る出力ポインタ。

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT MFCreateDeviceSourceActivate(
    IMFAttributes* pAttributes,
    IMFActivate** ppActivate
);

[DllImport("MF.dll", ExactSpelling = true)]
static extern int MFCreateDeviceSourceActivate(
    IntPtr pAttributes,   // IMFAttributes*
    IntPtr ppActivate   // IMFActivate** out
);

<DllImport("MF.dll", ExactSpelling:=True)>
Public Shared Function MFCreateDeviceSourceActivate(
    pAttributes As IntPtr,   ' IMFAttributes*
    ppActivate As IntPtr   ' IMFActivate** out
) As Integer
End Function

' pAttributes : IMFAttributes*
' ppActivate : IMFActivate** out
Declare PtrSafe Function MFCreateDeviceSourceActivate Lib "mf" ( _
    ByVal pAttributes As LongPtr, _
    ByVal ppActivate 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

MFCreateDeviceSourceActivate = ctypes.windll.mf.MFCreateDeviceSourceActivate
MFCreateDeviceSourceActivate.restype = ctypes.c_int
MFCreateDeviceSourceActivate.argtypes = [
    ctypes.c_void_p,  # pAttributes : IMFAttributes*
    ctypes.c_void_p,  # ppActivate : IMFActivate** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MF.dll')
MFCreateDeviceSourceActivate = Fiddle::Function.new(
  lib['MFCreateDeviceSourceActivate'],
  [
    Fiddle::TYPE_VOIDP,  # pAttributes : IMFAttributes*
    Fiddle::TYPE_VOIDP,  # ppActivate : IMFActivate** out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("MF.dll")]
public static extern int MFCreateDeviceSourceActivate(IntPtr pAttributes, IntPtr ppActivate);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MF_MFCreateDeviceSourceActivate' -Namespace Win32 -PassThru
# $api::MFCreateDeviceSourceActivate(pAttributes, ppActivate)

#uselib "MF.dll"
#func global MFCreateDeviceSourceActivate "MFCreateDeviceSourceActivate" sptr, sptr
; MFCreateDeviceSourceActivate pAttributes, ppActivate   ; 戻り値は stat
; pAttributes : IMFAttributes* -> "sptr"
; ppActivate : IMFActivate** 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 MFCreateDeviceSourceActivate "MFCreateDeviceSourceActivate" sptr, sptr
; res = MFCreateDeviceSourceActivate(pAttributes, ppActivate)
; pAttributes : IMFAttributes* -> "sptr"
; ppActivate : IMFActivate** out -> "sptr"

; HRESULT MFCreateDeviceSourceActivate(IMFAttributes* pAttributes, IMFActivate** ppActivate)
#uselib "MF.dll"
#cfunc global MFCreateDeviceSourceActivate "MFCreateDeviceSourceActivate" intptr, intptr
; res = MFCreateDeviceSourceActivate(pAttributes, ppActivate)
; pAttributes : IMFAttributes* -> "intptr"
; ppActivate : IMFActivate** out -> "intptr"

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

var (
	mf = windows.NewLazySystemDLL("MF.dll")
	procMFCreateDeviceSourceActivate = mf.NewProc("MFCreateDeviceSourceActivate")
)

// pAttributes (IMFAttributes*), ppActivate (IMFActivate** out)
r1, _, err := procMFCreateDeviceSourceActivate.Call(
	uintptr(pAttributes),
	uintptr(ppActivate),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateDeviceSourceActivate(
  pAttributes: Pointer;   // IMFAttributes*
  ppActivate: Pointer   // IMFActivate** out
): Integer; stdcall;
  external 'MF.dll' name 'MFCreateDeviceSourceActivate';

result := DllCall("MF\MFCreateDeviceSourceActivate"
    , "Ptr", pAttributes   ; IMFAttributes*
    , "Ptr", ppActivate   ; IMFActivate** out
    , "Int")   ; return: HRESULT

●MFCreateDeviceSourceActivate(pAttributes, ppActivate) = DLL("MF.dll", "int MFCreateDeviceSourceActivate(void*, void*)")
# 呼び出し: MFCreateDeviceSourceActivate(pAttributes, ppActivate)
# pAttributes : IMFAttributes* -> "void*"
# ppActivate : IMFActivate** 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)。