WICGetMetadataContentSize

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

HRESULT WICGetMetadataContentSize(
    const GUID* guidContainerFormat,
    IWICMetadataWriter* pIWriter,
    ULONGLONG* pcbSize
);

<DllImport("WindowsCodecs.dll", ExactSpelling:=True)>
Public Shared Function WICGetMetadataContentSize(
    ByRef guidContainerFormat As Guid,   ' GUID*
    pIWriter As IntPtr,   ' IWICMetadataWriter*
    <Out> ByRef pcbSize As ULong   ' ULONGLONG* out
) As Integer
End Function

' guidContainerFormat : GUID*
' pIWriter : IWICMetadataWriter*
' pcbSize : ULONGLONG* out
Declare PtrSafe Function WICGetMetadataContentSize Lib "windowscodecs" ( _
    ByVal guidContainerFormat As LongPtr, _
    ByVal pIWriter As LongPtr, _
    ByRef pcbSize As LongLong) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WICGetMetadataContentSize = ctypes.windll.windowscodecs.WICGetMetadataContentSize
WICGetMetadataContentSize.restype = ctypes.c_int
WICGetMetadataContentSize.argtypes = [
    ctypes.c_void_p,  # guidContainerFormat : GUID*
    ctypes.c_void_p,  # pIWriter : IWICMetadataWriter*
    ctypes.POINTER(ctypes.c_ulonglong),  # pcbSize : ULONGLONG* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WindowsCodecs.dll')
WICGetMetadataContentSize = Fiddle::Function.new(
  lib['WICGetMetadataContentSize'],
  [
    Fiddle::TYPE_VOIDP,  # guidContainerFormat : GUID*
    Fiddle::TYPE_VOIDP,  # pIWriter : IWICMetadataWriter*
    Fiddle::TYPE_VOIDP,  # pcbSize : ULONGLONG* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "windowscodecs")]
extern "system" {
    fn WICGetMetadataContentSize(
        guidContainerFormat: *const GUID,  // GUID*
        pIWriter: *mut core::ffi::c_void,  // IWICMetadataWriter*
        pcbSize: *mut u64  // ULONGLONG* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WindowsCodecs.dll")]
public static extern int WICGetMetadataContentSize(ref Guid guidContainerFormat, IntPtr pIWriter, out ulong pcbSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WindowsCodecs_WICGetMetadataContentSize' -Namespace Win32 -PassThru
# $api::WICGetMetadataContentSize(guidContainerFormat, pIWriter, pcbSize)

#uselib "WindowsCodecs.dll"
#func global WICGetMetadataContentSize "WICGetMetadataContentSize" sptr, sptr, sptr
; WICGetMetadataContentSize varptr(guidContainerFormat), pIWriter, varptr(pcbSize)   ; 戻り値は stat
; guidContainerFormat : GUID* -> "sptr"
; pIWriter : IWICMetadataWriter* -> "sptr"
; pcbSize : ULONGLONG* 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 "WindowsCodecs.dll"
#cfunc global WICGetMetadataContentSize "WICGetMetadataContentSize" var, sptr, var
; res = WICGetMetadataContentSize(guidContainerFormat, pIWriter, pcbSize)
; guidContainerFormat : GUID* -> "var"
; pIWriter : IWICMetadataWriter* -> "sptr"
; pcbSize : ULONGLONG* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT WICGetMetadataContentSize(GUID* guidContainerFormat, IWICMetadataWriter* pIWriter, ULONGLONG* pcbSize)
#uselib "WindowsCodecs.dll"
#cfunc global WICGetMetadataContentSize "WICGetMetadataContentSize" var, intptr, var
; res = WICGetMetadataContentSize(guidContainerFormat, pIWriter, pcbSize)
; guidContainerFormat : GUID* -> "var"
; pIWriter : IWICMetadataWriter* -> "intptr"
; pcbSize : ULONGLONG* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	windowscodecs = windows.NewLazySystemDLL("WindowsCodecs.dll")
	procWICGetMetadataContentSize = windowscodecs.NewProc("WICGetMetadataContentSize")
)

// guidContainerFormat (GUID*), pIWriter (IWICMetadataWriter*), pcbSize (ULONGLONG* out)
r1, _, err := procWICGetMetadataContentSize.Call(
	uintptr(guidContainerFormat),
	uintptr(pIWriter),
	uintptr(pcbSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WICGetMetadataContentSize(
  guidContainerFormat: PGUID;   // GUID*
  pIWriter: Pointer;   // IWICMetadataWriter*
  pcbSize: Pointer   // ULONGLONG* out
): Integer; stdcall;
  external 'WindowsCodecs.dll' name 'WICGetMetadataContentSize';

result := DllCall("WindowsCodecs\WICGetMetadataContentSize"
    , "Ptr", guidContainerFormat   ; GUID*
    , "Ptr", pIWriter   ; IWICMetadataWriter*
    , "Ptr", pcbSize   ; ULONGLONG* out
    , "Int")   ; return: HRESULT

●WICGetMetadataContentSize(guidContainerFormat, pIWriter, pcbSize) = DLL("WindowsCodecs.dll", "int WICGetMetadataContentSize(void*, void*, void*)")
# 呼び出し: WICGetMetadataContentSize(guidContainerFormat, pIWriter, pcbSize)
# guidContainerFormat : GUID* -> "void*"
# pIWriter : IWICMetadataWriter* -> "void*"
# pcbSize : ULONGLONG* 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)。