AVIFileReadData

// AVIFIL32.dll
#include <windows.h>

HRESULT AVIFileReadData(
    IAVIFile* pfile,
    DWORD ckid,
    void* lpData,
    INT* lpcbData
);

<DllImport("AVIFIL32.dll", ExactSpelling:=True)>
Public Shared Function AVIFileReadData(
    pfile As IntPtr,   ' IAVIFile*
    ckid As UInteger,   ' DWORD
    lpData As IntPtr,   ' void* out
    ByRef lpcbData As Integer   ' INT* in/out
) As Integer
End Function

' pfile : IAVIFile*
' ckid : DWORD
' lpData : void* out
' lpcbData : INT* in/out
Declare PtrSafe Function AVIFileReadData Lib "avifil32" ( _
    ByVal pfile As LongPtr, _
    ByVal ckid As Long, _
    ByVal lpData As LongPtr, _
    ByRef lpcbData As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

AVIFileReadData = ctypes.windll.avifil32.AVIFileReadData
AVIFileReadData.restype = ctypes.c_int
AVIFileReadData.argtypes = [
    ctypes.c_void_p,  # pfile : IAVIFile*
    wintypes.DWORD,  # ckid : DWORD
    ctypes.POINTER(None),  # lpData : void* out
    ctypes.POINTER(ctypes.c_int),  # lpcbData : INT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('AVIFIL32.dll')
AVIFileReadData = Fiddle::Function.new(
  lib['AVIFileReadData'],
  [
    Fiddle::TYPE_VOIDP,  # pfile : IAVIFile*
    -Fiddle::TYPE_INT,  # ckid : DWORD
    Fiddle::TYPE_VOIDP,  # lpData : void* out
    Fiddle::TYPE_VOIDP,  # lpcbData : INT* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "avifil32")]
extern "system" {
    fn AVIFileReadData(
        pfile: *mut core::ffi::c_void,  // IAVIFile*
        ckid: u32,  // DWORD
        lpData: *mut (),  // void* out
        lpcbData: *mut i32  // INT* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("AVIFIL32.dll")]
public static extern int AVIFileReadData(IntPtr pfile, uint ckid, IntPtr lpData, ref int lpcbData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'AVIFIL32_AVIFileReadData' -Namespace Win32 -PassThru
# $api::AVIFileReadData(pfile, ckid, lpData, lpcbData)

#uselib "AVIFIL32.dll"
#func global AVIFileReadData "AVIFileReadData" sptr, sptr, sptr, sptr
; AVIFileReadData pfile, ckid, lpData, varptr(lpcbData)   ; 戻り値は stat
; pfile : IAVIFile* -> "sptr"
; ckid : DWORD -> "sptr"
; lpData : void* out -> "sptr"
; lpcbData : INT* in/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 "AVIFIL32.dll"
#cfunc global AVIFileReadData "AVIFileReadData" sptr, int, sptr, var
; res = AVIFileReadData(pfile, ckid, lpData, lpcbData)
; pfile : IAVIFile* -> "sptr"
; ckid : DWORD -> "int"
; lpData : void* out -> "sptr"
; lpcbData : INT* in/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 AVIFileReadData(IAVIFile* pfile, DWORD ckid, void* lpData, INT* lpcbData)
#uselib "AVIFIL32.dll"
#cfunc global AVIFileReadData "AVIFileReadData" intptr, int, intptr, var
; res = AVIFileReadData(pfile, ckid, lpData, lpcbData)
; pfile : IAVIFile* -> "intptr"
; ckid : DWORD -> "int"
; lpData : void* out -> "intptr"
; lpcbData : INT* in/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 (
	avifil32 = windows.NewLazySystemDLL("AVIFIL32.dll")
	procAVIFileReadData = avifil32.NewProc("AVIFileReadData")
)

// pfile (IAVIFile*), ckid (DWORD), lpData (void* out), lpcbData (INT* in/out)
r1, _, err := procAVIFileReadData.Call(
	uintptr(pfile),
	uintptr(ckid),
	uintptr(lpData),
	uintptr(lpcbData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function AVIFileReadData(
  pfile: Pointer;   // IAVIFile*
  ckid: DWORD;   // DWORD
  lpData: Pointer;   // void* out
  lpcbData: Pointer   // INT* in/out
): Integer; stdcall;
  external 'AVIFIL32.dll' name 'AVIFileReadData';

result := DllCall("AVIFIL32\AVIFileReadData"
    , "Ptr", pfile   ; IAVIFile*
    , "UInt", ckid   ; DWORD
    , "Ptr", lpData   ; void* out
    , "Ptr", lpcbData   ; INT* in/out
    , "Int")   ; return: HRESULT

●AVIFileReadData(pfile, ckid, lpData, lpcbData) = DLL("AVIFIL32.dll", "int AVIFileReadData(void*, dword, void*, void*)")
# 呼び出し: AVIFileReadData(pfile, ckid, lpData, lpcbData)
# pfile : IAVIFile* -> "void*"
# ckid : DWORD -> "dword"
# lpData : void* out -> "void*"
# lpcbData : INT* in/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)。