CryptGetAsyncParam

// CRYPT32.dll
#include <windows.h>

BOOL CryptGetAsyncParam(
    HCRYPTASYNC hAsync,
    LPSTR pszParamOid,
    void** ppvParam,   // optional
    PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* ppfnFree   // optional
);

<DllImport("CRYPT32.dll", ExactSpelling:=True)>
Public Shared Function CryptGetAsyncParam(
    hAsync As IntPtr,   ' HCRYPTASYNC
    <MarshalAs(UnmanagedType.LPStr)> pszParamOid As String,   ' LPSTR
    ppvParam As IntPtr,   ' void** optional, out
    ppfnFree As IntPtr   ' PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out
) As Boolean
End Function

' hAsync : HCRYPTASYNC
' pszParamOid : LPSTR
' ppvParam : void** optional, out
' ppfnFree : PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out
Declare PtrSafe Function CryptGetAsyncParam Lib "crypt32" ( _
    ByVal hAsync As LongPtr, _
    ByVal pszParamOid As String, _
    ByVal ppvParam As LongPtr, _
    ByVal ppfnFree 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

CryptGetAsyncParam = ctypes.windll.crypt32.CryptGetAsyncParam
CryptGetAsyncParam.restype = wintypes.BOOL
CryptGetAsyncParam.argtypes = [
    ctypes.c_ssize_t,  # hAsync : HCRYPTASYNC
    wintypes.LPCSTR,  # pszParamOid : LPSTR
    ctypes.c_void_p,  # ppvParam : void** optional, out
    ctypes.c_void_p,  # ppfnFree : PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CryptGetAsyncParam = Fiddle::Function.new(
  lib['CryptGetAsyncParam'],
  [
    Fiddle::TYPE_INTPTR_T,  # hAsync : HCRYPTASYNC
    Fiddle::TYPE_VOIDP,  # pszParamOid : LPSTR
    Fiddle::TYPE_VOIDP,  # ppvParam : void** optional, out
    Fiddle::TYPE_VOIDP,  # ppfnFree : PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CryptGetAsyncParam(
        hAsync: isize,  // HCRYPTASYNC
        pszParamOid: *mut u8,  // LPSTR
        ppvParam: *mut *mut (),  // void** optional, out
        ppfnFree: *mut *const core::ffi::c_void  // PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll")]
public static extern bool CryptGetAsyncParam(IntPtr hAsync, [MarshalAs(UnmanagedType.LPStr)] string pszParamOid, IntPtr ppvParam, IntPtr ppfnFree);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CryptGetAsyncParam' -Namespace Win32 -PassThru
# $api::CryptGetAsyncParam(hAsync, pszParamOid, ppvParam, ppfnFree)

#uselib "CRYPT32.dll"
#func global CryptGetAsyncParam "CryptGetAsyncParam" sptr, sptr, sptr, sptr
; CryptGetAsyncParam hAsync, pszParamOid, ppvParam, ppfnFree   ; 戻り値は stat
; hAsync : HCRYPTASYNC -> "sptr"
; pszParamOid : LPSTR -> "sptr"
; ppvParam : void** optional, out -> "sptr"
; ppfnFree : PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, 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 "CRYPT32.dll"
#cfunc global CryptGetAsyncParam "CryptGetAsyncParam" sptr, str, sptr, sptr
; res = CryptGetAsyncParam(hAsync, pszParamOid, ppvParam, ppfnFree)
; hAsync : HCRYPTASYNC -> "sptr"
; pszParamOid : LPSTR -> "str"
; ppvParam : void** optional, out -> "sptr"
; ppfnFree : PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out -> "sptr"

; BOOL CryptGetAsyncParam(HCRYPTASYNC hAsync, LPSTR pszParamOid, void** ppvParam, PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* ppfnFree)
#uselib "CRYPT32.dll"
#cfunc global CryptGetAsyncParam "CryptGetAsyncParam" intptr, str, intptr, intptr
; res = CryptGetAsyncParam(hAsync, pszParamOid, ppvParam, ppfnFree)
; hAsync : HCRYPTASYNC -> "intptr"
; pszParamOid : LPSTR -> "str"
; ppvParam : void** optional, out -> "intptr"
; ppfnFree : PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out -> "intptr"

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

var (
	crypt32 = windows.NewLazySystemDLL("CRYPT32.dll")
	procCryptGetAsyncParam = crypt32.NewProc("CryptGetAsyncParam")
)

// hAsync (HCRYPTASYNC), pszParamOid (LPSTR), ppvParam (void** optional, out), ppfnFree (PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out)
r1, _, err := procCryptGetAsyncParam.Call(
	uintptr(hAsync),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszParamOid))),
	uintptr(ppvParam),
	uintptr(ppfnFree),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptGetAsyncParam(
  hAsync: NativeInt;   // HCRYPTASYNC
  pszParamOid: PAnsiChar;   // LPSTR
  ppvParam: Pointer;   // void** optional, out
  ppfnFree: Pointer   // PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CryptGetAsyncParam';

result := DllCall("CRYPT32\CryptGetAsyncParam"
    , "Ptr", hAsync   ; HCRYPTASYNC
    , "AStr", pszParamOid   ; LPSTR
    , "Ptr", ppvParam   ; void** optional, out
    , "Ptr", ppfnFree   ; PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, out
    , "Int")   ; return: BOOL

●CryptGetAsyncParam(hAsync, pszParamOid, ppvParam, ppfnFree) = DLL("CRYPT32.dll", "bool CryptGetAsyncParam(int, char*, void*, void*)")
# 呼び出し: CryptGetAsyncParam(hAsync, pszParamOid, ppvParam, ppfnFree)
# hAsync : HCRYPTASYNC -> "int"
# pszParamOid : LPSTR -> "char*"
# ppvParam : void** optional, out -> "void*"
# ppfnFree : PFN_CRYPT_ASYNC_PARAM_FREE_FUNC* optional, 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)。