SCardEstablishContext

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

INT SCardEstablishContext(
    SCARD_SCOPE dwScope,
    const void* pvReserved1,   // optional
    const void* pvReserved2,   // optional
    UINT_PTR* phContext
);

<DllImport("WinSCard.dll", ExactSpelling:=True)>
Public Shared Function SCardEstablishContext(
    dwScope As UInteger,   ' SCARD_SCOPE
    pvReserved1 As IntPtr,   ' void* optional
    pvReserved2 As IntPtr,   ' void* optional
    <Out> ByRef phContext As UIntPtr   ' UINT_PTR* out
) As Integer
End Function

' dwScope : SCARD_SCOPE
' pvReserved1 : void* optional
' pvReserved2 : void* optional
' phContext : UINT_PTR* out
Declare PtrSafe Function SCardEstablishContext Lib "winscard" ( _
    ByVal dwScope As Long, _
    ByVal pvReserved1 As LongPtr, _
    ByVal pvReserved2 As LongPtr, _
    ByRef phContext 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

SCardEstablishContext = ctypes.windll.winscard.SCardEstablishContext
SCardEstablishContext.restype = ctypes.c_int
SCardEstablishContext.argtypes = [
    wintypes.DWORD,  # dwScope : SCARD_SCOPE
    ctypes.POINTER(None),  # pvReserved1 : void* optional
    ctypes.POINTER(None),  # pvReserved2 : void* optional
    ctypes.POINTER(ctypes.c_size_t),  # phContext : UINT_PTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WinSCard.dll')
SCardEstablishContext = Fiddle::Function.new(
  lib['SCardEstablishContext'],
  [
    -Fiddle::TYPE_INT,  # dwScope : SCARD_SCOPE
    Fiddle::TYPE_VOIDP,  # pvReserved1 : void* optional
    Fiddle::TYPE_VOIDP,  # pvReserved2 : void* optional
    Fiddle::TYPE_VOIDP,  # phContext : UINT_PTR* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "winscard")]
extern "system" {
    fn SCardEstablishContext(
        dwScope: u32,  // SCARD_SCOPE
        pvReserved1: *const (),  // void* optional
        pvReserved2: *const (),  // void* optional
        phContext: *mut usize  // UINT_PTR* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WinSCard.dll")]
public static extern int SCardEstablishContext(uint dwScope, IntPtr pvReserved1, IntPtr pvReserved2, out UIntPtr phContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WinSCard_SCardEstablishContext' -Namespace Win32 -PassThru
# $api::SCardEstablishContext(dwScope, pvReserved1, pvReserved2, phContext)

#uselib "WinSCard.dll"
#func global SCardEstablishContext "SCardEstablishContext" sptr, sptr, sptr, sptr
; SCardEstablishContext dwScope, pvReserved1, pvReserved2, varptr(phContext)   ; 戻り値は stat
; dwScope : SCARD_SCOPE -> "sptr"
; pvReserved1 : void* optional -> "sptr"
; pvReserved2 : void* optional -> "sptr"
; phContext : UINT_PTR* 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 "WinSCard.dll"
#cfunc global SCardEstablishContext "SCardEstablishContext" int, sptr, sptr, var
; res = SCardEstablishContext(dwScope, pvReserved1, pvReserved2, phContext)
; dwScope : SCARD_SCOPE -> "int"
; pvReserved1 : void* optional -> "sptr"
; pvReserved2 : void* optional -> "sptr"
; phContext : UINT_PTR* 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。

; INT SCardEstablishContext(SCARD_SCOPE dwScope, void* pvReserved1, void* pvReserved2, UINT_PTR* phContext)
#uselib "WinSCard.dll"
#cfunc global SCardEstablishContext "SCardEstablishContext" int, intptr, intptr, var
; res = SCardEstablishContext(dwScope, pvReserved1, pvReserved2, phContext)
; dwScope : SCARD_SCOPE -> "int"
; pvReserved1 : void* optional -> "intptr"
; pvReserved2 : void* optional -> "intptr"
; phContext : UINT_PTR* 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 (
	winscard = windows.NewLazySystemDLL("WinSCard.dll")
	procSCardEstablishContext = winscard.NewProc("SCardEstablishContext")
)

// dwScope (SCARD_SCOPE), pvReserved1 (void* optional), pvReserved2 (void* optional), phContext (UINT_PTR* out)
r1, _, err := procSCardEstablishContext.Call(
	uintptr(dwScope),
	uintptr(pvReserved1),
	uintptr(pvReserved2),
	uintptr(phContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SCardEstablishContext(
  dwScope: DWORD;   // SCARD_SCOPE
  pvReserved1: Pointer;   // void* optional
  pvReserved2: Pointer;   // void* optional
  phContext: Pointer   // UINT_PTR* out
): Integer; stdcall;
  external 'WinSCard.dll' name 'SCardEstablishContext';

result := DllCall("WinSCard\SCardEstablishContext"
    , "UInt", dwScope   ; SCARD_SCOPE
    , "Ptr", pvReserved1   ; void* optional
    , "Ptr", pvReserved2   ; void* optional
    , "Ptr", phContext   ; UINT_PTR* out
    , "Int")   ; return: INT

●SCardEstablishContext(dwScope, pvReserved1, pvReserved2, phContext) = DLL("WinSCard.dll", "int SCardEstablishContext(dword, void*, void*, void*)")
# 呼び出し: SCardEstablishContext(dwScope, pvReserved1, pvReserved2, phContext)
# dwScope : SCARD_SCOPE -> "dword"
# pvReserved1 : void* optional -> "void*"
# pvReserved2 : void* optional -> "void*"
# phContext : UINT_PTR* 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)。