SCardIsValidContext

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

INT SCardIsValidContext(
    UINT_PTR hContext
);

<DllImport("WinSCard.dll", ExactSpelling:=True)>
Public Shared Function SCardIsValidContext(
    hContext As UIntPtr   ' UINT_PTR
) As Integer
End Function

' hContext : UINT_PTR
Declare PtrSafe Function SCardIsValidContext Lib "winscard" ( _
    ByVal hContext 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

SCardIsValidContext = ctypes.windll.winscard.SCardIsValidContext
SCardIsValidContext.restype = ctypes.c_int
SCardIsValidContext.argtypes = [
    ctypes.c_size_t,  # hContext : UINT_PTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WinSCard.dll')
SCardIsValidContext = Fiddle::Function.new(
  lib['SCardIsValidContext'],
  [
    Fiddle::TYPE_UINTPTR_T,  # hContext : UINT_PTR
  ],
  Fiddle::TYPE_INT)

#[link(name = "winscard")]
extern "system" {
    fn SCardIsValidContext(
        hContext: usize  // UINT_PTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WinSCard.dll")]
public static extern int SCardIsValidContext(UIntPtr hContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WinSCard_SCardIsValidContext' -Namespace Win32 -PassThru
# $api::SCardIsValidContext(hContext)

#uselib "WinSCard.dll"
#func global SCardIsValidContext "SCardIsValidContext" sptr
; SCardIsValidContext hContext   ; 戻り値は stat
; hContext : UINT_PTR -> "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 SCardIsValidContext "SCardIsValidContext" sptr
; res = SCardIsValidContext(hContext)
; hContext : UINT_PTR -> "sptr"

; INT SCardIsValidContext(UINT_PTR hContext)
#uselib "WinSCard.dll"
#cfunc global SCardIsValidContext "SCardIsValidContext" intptr
; res = SCardIsValidContext(hContext)
; hContext : UINT_PTR -> "intptr"

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

var (
	winscard = windows.NewLazySystemDLL("WinSCard.dll")
	procSCardIsValidContext = winscard.NewProc("SCardIsValidContext")
)

// hContext (UINT_PTR)
r1, _, err := procSCardIsValidContext.Call(
	uintptr(hContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SCardIsValidContext(
  hContext: NativeUInt   // UINT_PTR
): Integer; stdcall;
  external 'WinSCard.dll' name 'SCardIsValidContext';

result := DllCall("WinSCard\SCardIsValidContext"
    , "UPtr", hContext   ; UINT_PTR
    , "Int")   ; return: INT

●SCardIsValidContext(hContext) = DLL("WinSCard.dll", "int SCardIsValidContext(int)")
# 呼び出し: SCardIsValidContext(hContext)
# hContext : UINT_PTR -> "int"
# 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)。