JsGetIndexedProperty

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

JsErrorCode JsGetIndexedProperty(
    void* object,
    void* index,
    void** result
);

<DllImport("chakra.dll", ExactSpelling:=True)>
Public Shared Function JsGetIndexedProperty(
    [object] As IntPtr,   ' void*
    index As IntPtr,   ' void*
    result As IntPtr   ' void** out
) As UInteger
End Function

' object : void*
' index : void*
' result : void** out
Declare PtrSafe Function JsGetIndexedProperty Lib "chakra" ( _
    ByVal object As LongPtr, _
    ByVal index As LongPtr, _
    ByVal result 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

JsGetIndexedProperty = ctypes.windll.chakra.JsGetIndexedProperty
JsGetIndexedProperty.restype = wintypes.DWORD
JsGetIndexedProperty.argtypes = [
    ctypes.POINTER(None),  # object : void*
    ctypes.POINTER(None),  # index : void*
    ctypes.c_void_p,  # result : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('chakra.dll')
JsGetIndexedProperty = Fiddle::Function.new(
  lib['JsGetIndexedProperty'],
  [
    Fiddle::TYPE_VOIDP,  # object : void*
    Fiddle::TYPE_VOIDP,  # index : void*
    Fiddle::TYPE_VOIDP,  # result : void** out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "chakra")]
extern "system" {
    fn JsGetIndexedProperty(
        object: *mut (),  // void*
        index: *mut (),  // void*
        result: *mut *mut ()  // void** out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("chakra.dll")]
public static extern uint JsGetIndexedProperty(IntPtr object, IntPtr index, IntPtr result);
"@
$api = Add-Type -MemberDefinition $sig -Name 'chakra_JsGetIndexedProperty' -Namespace Win32 -PassThru
# $api::JsGetIndexedProperty(object, index, result)

#uselib "chakra.dll"
#func global JsGetIndexedProperty "JsGetIndexedProperty" sptr, sptr, sptr
; JsGetIndexedProperty object, index, result   ; 戻り値は stat
; object : void* -> "sptr"
; index : void* -> "sptr"
; result : void** 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 "chakra.dll"
#cfunc global JsGetIndexedProperty "JsGetIndexedProperty" sptr, sptr, sptr
; res = JsGetIndexedProperty(object, index, result)
; object : void* -> "sptr"
; index : void* -> "sptr"
; result : void** out -> "sptr"

; JsErrorCode JsGetIndexedProperty(void* object, void* index, void** result)
#uselib "chakra.dll"
#cfunc global JsGetIndexedProperty "JsGetIndexedProperty" intptr, intptr, intptr
; res = JsGetIndexedProperty(object, index, result)
; object : void* -> "intptr"
; index : void* -> "intptr"
; result : void** out -> "intptr"

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

var (
	chakra = windows.NewLazySystemDLL("chakra.dll")
	procJsGetIndexedProperty = chakra.NewProc("JsGetIndexedProperty")
)

// object (void*), index (void*), result (void** out)
r1, _, err := procJsGetIndexedProperty.Call(
	uintptr(object),
	uintptr(index),
	uintptr(result),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // JsErrorCode

function JsGetIndexedProperty(
  object: Pointer;   // void*
  index: Pointer;   // void*
  result: Pointer   // void** out
): DWORD; stdcall;
  external 'chakra.dll' name 'JsGetIndexedProperty';

result := DllCall("chakra\JsGetIndexedProperty"
    , "Ptr", object   ; void*
    , "Ptr", index   ; void*
    , "Ptr", result   ; void** out
    , "UInt")   ; return: JsErrorCode

●JsGetIndexedProperty(object, index, result) = DLL("chakra.dll", "dword JsGetIndexedProperty(void*, void*, void*)")
# 呼び出し: JsGetIndexedProperty(object, index, result)
# object : void* -> "void*"
# index : void* -> "void*"
# result : void** 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)。