JsConvertValueToNumber

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

JsErrorCode JsConvertValueToNumber(
    void* value,
    void** numberValue
);

<DllImport("chakra.dll", ExactSpelling:=True)>
Public Shared Function JsConvertValueToNumber(
    value As IntPtr,   ' void*
    numberValue As IntPtr   ' void** out
) As UInteger
End Function

' value : void*
' numberValue : void** out
Declare PtrSafe Function JsConvertValueToNumber Lib "chakra" ( _
    ByVal value As LongPtr, _
    ByVal numberValue 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

JsConvertValueToNumber = ctypes.windll.chakra.JsConvertValueToNumber
JsConvertValueToNumber.restype = wintypes.DWORD
JsConvertValueToNumber.argtypes = [
    ctypes.POINTER(None),  # value : void*
    ctypes.c_void_p,  # numberValue : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('chakra.dll')
JsConvertValueToNumber = Fiddle::Function.new(
  lib['JsConvertValueToNumber'],
  [
    Fiddle::TYPE_VOIDP,  # value : void*
    Fiddle::TYPE_VOIDP,  # numberValue : void** out
  ],
  -Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("chakra.dll")]
public static extern uint JsConvertValueToNumber(IntPtr value, IntPtr numberValue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'chakra_JsConvertValueToNumber' -Namespace Win32 -PassThru
# $api::JsConvertValueToNumber(value, numberValue)

#uselib "chakra.dll"
#func global JsConvertValueToNumber "JsConvertValueToNumber" sptr, sptr
; JsConvertValueToNumber value, numberValue   ; 戻り値は stat
; value : void* -> "sptr"
; numberValue : 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 JsConvertValueToNumber "JsConvertValueToNumber" sptr, sptr
; res = JsConvertValueToNumber(value, numberValue)
; value : void* -> "sptr"
; numberValue : void** out -> "sptr"

; JsErrorCode JsConvertValueToNumber(void* value, void** numberValue)
#uselib "chakra.dll"
#cfunc global JsConvertValueToNumber "JsConvertValueToNumber" intptr, intptr
; res = JsConvertValueToNumber(value, numberValue)
; value : void* -> "intptr"
; numberValue : void** out -> "intptr"

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

var (
	chakra = windows.NewLazySystemDLL("chakra.dll")
	procJsConvertValueToNumber = chakra.NewProc("JsConvertValueToNumber")
)

// value (void*), numberValue (void** out)
r1, _, err := procJsConvertValueToNumber.Call(
	uintptr(value),
	uintptr(numberValue),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // JsErrorCode

function JsConvertValueToNumber(
  value: Pointer;   // void*
  numberValue: Pointer   // void** out
): DWORD; stdcall;
  external 'chakra.dll' name 'JsConvertValueToNumber';

result := DllCall("chakra\JsConvertValueToNumber"
    , "Ptr", value   ; void*
    , "Ptr", numberValue   ; void** out
    , "UInt")   ; return: JsErrorCode

●JsConvertValueToNumber(value, numberValue) = DLL("chakra.dll", "dword JsConvertValueToNumber(void*, void*)")
# 呼び出し: JsConvertValueToNumber(value, numberValue)
# value : void* -> "void*"
# numberValue : 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)。