WMCreateReader

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

HRESULT WMCreateReader(
    IUnknown* pUnkCert,
    DWORD dwRights,
    IWMReader** ppReader
);

<DllImport("WMVCore.dll", ExactSpelling:=True)>
Public Shared Function WMCreateReader(
    pUnkCert As IntPtr,   ' IUnknown*
    dwRights As UInteger,   ' DWORD
    ppReader As IntPtr   ' IWMReader** out
) As Integer
End Function

' pUnkCert : IUnknown*
' dwRights : DWORD
' ppReader : IWMReader** out
Declare PtrSafe Function WMCreateReader Lib "wmvcore" ( _
    ByVal pUnkCert As LongPtr, _
    ByVal dwRights As Long, _
    ByVal ppReader 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

WMCreateReader = ctypes.windll.wmvcore.WMCreateReader
WMCreateReader.restype = ctypes.c_int
WMCreateReader.argtypes = [
    ctypes.c_void_p,  # pUnkCert : IUnknown*
    wintypes.DWORD,  # dwRights : DWORD
    ctypes.c_void_p,  # ppReader : IWMReader** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WMVCore.dll')
WMCreateReader = Fiddle::Function.new(
  lib['WMCreateReader'],
  [
    Fiddle::TYPE_VOIDP,  # pUnkCert : IUnknown*
    -Fiddle::TYPE_INT,  # dwRights : DWORD
    Fiddle::TYPE_VOIDP,  # ppReader : IWMReader** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "wmvcore")]
extern "system" {
    fn WMCreateReader(
        pUnkCert: *mut core::ffi::c_void,  // IUnknown*
        dwRights: u32,  // DWORD
        ppReader: *mut *mut core::ffi::c_void  // IWMReader** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WMVCore.dll")]
public static extern int WMCreateReader(IntPtr pUnkCert, uint dwRights, IntPtr ppReader);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WMVCore_WMCreateReader' -Namespace Win32 -PassThru
# $api::WMCreateReader(pUnkCert, dwRights, ppReader)

#uselib "WMVCore.dll"
#func global WMCreateReader "WMCreateReader" sptr, sptr, sptr
; WMCreateReader pUnkCert, dwRights, ppReader   ; 戻り値は stat
; pUnkCert : IUnknown* -> "sptr"
; dwRights : DWORD -> "sptr"
; ppReader : IWMReader** 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 "WMVCore.dll"
#cfunc global WMCreateReader "WMCreateReader" sptr, int, sptr
; res = WMCreateReader(pUnkCert, dwRights, ppReader)
; pUnkCert : IUnknown* -> "sptr"
; dwRights : DWORD -> "int"
; ppReader : IWMReader** out -> "sptr"

; HRESULT WMCreateReader(IUnknown* pUnkCert, DWORD dwRights, IWMReader** ppReader)
#uselib "WMVCore.dll"
#cfunc global WMCreateReader "WMCreateReader" intptr, int, intptr
; res = WMCreateReader(pUnkCert, dwRights, ppReader)
; pUnkCert : IUnknown* -> "intptr"
; dwRights : DWORD -> "int"
; ppReader : IWMReader** out -> "intptr"

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

var (
	wmvcore = windows.NewLazySystemDLL("WMVCore.dll")
	procWMCreateReader = wmvcore.NewProc("WMCreateReader")
)

// pUnkCert (IUnknown*), dwRights (DWORD), ppReader (IWMReader** out)
r1, _, err := procWMCreateReader.Call(
	uintptr(pUnkCert),
	uintptr(dwRights),
	uintptr(ppReader),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WMCreateReader(
  pUnkCert: Pointer;   // IUnknown*
  dwRights: DWORD;   // DWORD
  ppReader: Pointer   // IWMReader** out
): Integer; stdcall;
  external 'WMVCore.dll' name 'WMCreateReader';

result := DllCall("WMVCore\WMCreateReader"
    , "Ptr", pUnkCert   ; IUnknown*
    , "UInt", dwRights   ; DWORD
    , "Ptr", ppReader   ; IWMReader** out
    , "Int")   ; return: HRESULT

●WMCreateReader(pUnkCert, dwRights, ppReader) = DLL("WMVCore.dll", "int WMCreateReader(void*, dword, void*)")
# 呼び出し: WMCreateReader(pUnkCert, dwRights, ppReader)
# pUnkCert : IUnknown* -> "void*"
# dwRights : DWORD -> "dword"
# ppReader : IWMReader** 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)。