JsGetCurrentContext

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

JsErrorCode JsGetCurrentContext(
    void** currentContext
);

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

' currentContext : void** out
Declare PtrSafe Function JsGetCurrentContext Lib "chakra" ( _
    ByVal currentContext 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

JsGetCurrentContext = ctypes.windll.chakra.JsGetCurrentContext
JsGetCurrentContext.restype = wintypes.DWORD
JsGetCurrentContext.argtypes = [
    ctypes.c_void_p,  # currentContext : void** out
]

require 'fiddle'
require 'fiddle/import'

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

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

$sig = @"
[DllImport("chakra.dll")]
public static extern uint JsGetCurrentContext(IntPtr currentContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'chakra_JsGetCurrentContext' -Namespace Win32 -PassThru
# $api::JsGetCurrentContext(currentContext)

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

; JsErrorCode JsGetCurrentContext(void** currentContext)
#uselib "chakra.dll"
#cfunc global JsGetCurrentContext "JsGetCurrentContext" intptr
; res = JsGetCurrentContext(currentContext)
; currentContext : void** out -> "intptr"

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

var (
	chakra = windows.NewLazySystemDLL("chakra.dll")
	procJsGetCurrentContext = chakra.NewProc("JsGetCurrentContext")
)

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

function JsGetCurrentContext(
  currentContext: Pointer   // void** out
): DWORD; stdcall;
  external 'chakra.dll' name 'JsGetCurrentContext';

result := DllCall("chakra\JsGetCurrentContext"
    , "Ptr", currentContext   ; void** out
    , "UInt")   ; return: JsErrorCode

●JsGetCurrentContext(currentContext) = DLL("chakra.dll", "dword JsGetCurrentContext(void*)")
# 呼び出し: JsGetCurrentContext(currentContext)
# currentContext : 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)。