JsPointerToString

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

JsErrorCode JsPointerToString(
    LPCWSTR stringValue,
    UINT_PTR stringLength,
    void** value
);

<DllImport("chakra.dll", ExactSpelling:=True)>
Public Shared Function JsPointerToString(
    <MarshalAs(UnmanagedType.LPWStr)> stringValue As String,   ' LPCWSTR
    stringLength As UIntPtr,   ' UINT_PTR
    value As IntPtr   ' void** out
) As UInteger
End Function

' stringValue : LPCWSTR
' stringLength : UINT_PTR
' value : void** out
Declare PtrSafe Function JsPointerToString Lib "chakra" ( _
    ByVal stringValue As LongPtr, _
    ByVal stringLength As LongPtr, _
    ByVal value 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

JsPointerToString = ctypes.windll.chakra.JsPointerToString
JsPointerToString.restype = wintypes.DWORD
JsPointerToString.argtypes = [
    wintypes.LPCWSTR,  # stringValue : LPCWSTR
    ctypes.c_size_t,  # stringLength : UINT_PTR
    ctypes.c_void_p,  # value : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('chakra.dll')
JsPointerToString = Fiddle::Function.new(
  lib['JsPointerToString'],
  [
    Fiddle::TYPE_VOIDP,  # stringValue : LPCWSTR
    Fiddle::TYPE_UINTPTR_T,  # stringLength : UINT_PTR
    Fiddle::TYPE_VOIDP,  # value : void** out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "chakra")]
extern "system" {
    fn JsPointerToString(
        stringValue: *const u16,  // LPCWSTR
        stringLength: usize,  // UINT_PTR
        value: *mut *mut ()  // void** out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("chakra.dll")]
public static extern uint JsPointerToString([MarshalAs(UnmanagedType.LPWStr)] string stringValue, UIntPtr stringLength, IntPtr value);
"@
$api = Add-Type -MemberDefinition $sig -Name 'chakra_JsPointerToString' -Namespace Win32 -PassThru
# $api::JsPointerToString(stringValue, stringLength, value)

#uselib "chakra.dll"
#func global JsPointerToString "JsPointerToString" sptr, sptr, sptr
; JsPointerToString stringValue, stringLength, value   ; 戻り値は stat
; stringValue : LPCWSTR -> "sptr"
; stringLength : UINT_PTR -> "sptr"
; value : 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 JsPointerToString "JsPointerToString" wstr, sptr, sptr
; res = JsPointerToString(stringValue, stringLength, value)
; stringValue : LPCWSTR -> "wstr"
; stringLength : UINT_PTR -> "sptr"
; value : void** out -> "sptr"

; JsErrorCode JsPointerToString(LPCWSTR stringValue, UINT_PTR stringLength, void** value)
#uselib "chakra.dll"
#cfunc global JsPointerToString "JsPointerToString" wstr, intptr, intptr
; res = JsPointerToString(stringValue, stringLength, value)
; stringValue : LPCWSTR -> "wstr"
; stringLength : UINT_PTR -> "intptr"
; value : void** out -> "intptr"

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

var (
	chakra = windows.NewLazySystemDLL("chakra.dll")
	procJsPointerToString = chakra.NewProc("JsPointerToString")
)

// stringValue (LPCWSTR), stringLength (UINT_PTR), value (void** out)
r1, _, err := procJsPointerToString.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(stringValue))),
	uintptr(stringLength),
	uintptr(value),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // JsErrorCode

function JsPointerToString(
  stringValue: PWideChar;   // LPCWSTR
  stringLength: NativeUInt;   // UINT_PTR
  value: Pointer   // void** out
): DWORD; stdcall;
  external 'chakra.dll' name 'JsPointerToString';

result := DllCall("chakra\JsPointerToString"
    , "WStr", stringValue   ; LPCWSTR
    , "UPtr", stringLength   ; UINT_PTR
    , "Ptr", value   ; void** out
    , "UInt")   ; return: JsErrorCode

●JsPointerToString(stringValue, stringLength, value) = DLL("chakra.dll", "dword JsPointerToString(char*, int, void*)")
# 呼び出し: JsPointerToString(stringValue, stringLength, value)
# stringValue : LPCWSTR -> "char*"
# stringLength : UINT_PTR -> "int"
# value : 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)。