JsGetOwnPropertyDescriptor
関数オブジェクト自身のプロパティ記述子を取得する。
シグネチャ
// chakra.dll
#include <windows.h>
JsErrorCode JsGetOwnPropertyDescriptor(
void* object,
void* propertyId,
void** propertyDescriptor
);パラメーター
| 名前 | 型 | 方向 |
|---|---|---|
| object | void* | in |
| propertyId | void* | in |
| propertyDescriptor | void** | out |
戻り値の型: JsErrorCode
各言語での呼び出し定義
// chakra.dll
#include <windows.h>
JsErrorCode JsGetOwnPropertyDescriptor(
void* object,
void* propertyId,
void** propertyDescriptor
);[DllImport("chakra.dll", ExactSpelling = true)]
static extern uint JsGetOwnPropertyDescriptor(
IntPtr object, // void*
IntPtr propertyId, // void*
IntPtr propertyDescriptor // void** out
);<DllImport("chakra.dll", ExactSpelling:=True)>
Public Shared Function JsGetOwnPropertyDescriptor(
[object] As IntPtr, ' void*
propertyId As IntPtr, ' void*
propertyDescriptor As IntPtr ' void** out
) As UInteger
End Function' object : void*
' propertyId : void*
' propertyDescriptor : void** out
Declare PtrSafe Function JsGetOwnPropertyDescriptor Lib "chakra" ( _
ByVal object As LongPtr, _
ByVal propertyId As LongPtr, _
ByVal propertyDescriptor 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
JsGetOwnPropertyDescriptor = ctypes.windll.chakra.JsGetOwnPropertyDescriptor
JsGetOwnPropertyDescriptor.restype = wintypes.DWORD
JsGetOwnPropertyDescriptor.argtypes = [
ctypes.POINTER(None), # object : void*
ctypes.POINTER(None), # propertyId : void*
ctypes.c_void_p, # propertyDescriptor : void** out
]require 'fiddle'
require 'fiddle/import'
lib = Fiddle.dlopen('chakra.dll')
JsGetOwnPropertyDescriptor = Fiddle::Function.new(
lib['JsGetOwnPropertyDescriptor'],
[
Fiddle::TYPE_VOIDP, # object : void*
Fiddle::TYPE_VOIDP, # propertyId : void*
Fiddle::TYPE_VOIDP, # propertyDescriptor : void** out
],
-Fiddle::TYPE_INT)#[link(name = "chakra")]
extern "system" {
fn JsGetOwnPropertyDescriptor(
object: *mut (), // void*
propertyId: *mut (), // void*
propertyDescriptor: *mut *mut () // void** out
) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.$sig = @"
[DllImport("chakra.dll")]
public static extern uint JsGetOwnPropertyDescriptor(IntPtr object, IntPtr propertyId, IntPtr propertyDescriptor);
"@
$api = Add-Type -MemberDefinition $sig -Name 'chakra_JsGetOwnPropertyDescriptor' -Namespace Win32 -PassThru
# $api::JsGetOwnPropertyDescriptor(object, propertyId, propertyDescriptor)#uselib "chakra.dll"
#func global JsGetOwnPropertyDescriptor "JsGetOwnPropertyDescriptor" sptr, sptr, sptr
; JsGetOwnPropertyDescriptor object, propertyId, propertyDescriptor ; 戻り値は stat
; object : void* -> "sptr"
; propertyId : void* -> "sptr"
; propertyDescriptor : 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 JsGetOwnPropertyDescriptor "JsGetOwnPropertyDescriptor" sptr, sptr, sptr
; res = JsGetOwnPropertyDescriptor(object, propertyId, propertyDescriptor)
; object : void* -> "sptr"
; propertyId : void* -> "sptr"
; propertyDescriptor : void** out -> "sptr"; JsErrorCode JsGetOwnPropertyDescriptor(void* object, void* propertyId, void** propertyDescriptor)
#uselib "chakra.dll"
#cfunc global JsGetOwnPropertyDescriptor "JsGetOwnPropertyDescriptor" intptr, intptr, intptr
; res = JsGetOwnPropertyDescriptor(object, propertyId, propertyDescriptor)
; object : void* -> "intptr"
; propertyId : void* -> "intptr"
; propertyDescriptor : void** out -> "intptr"import (
"golang.org/x/sys/windows"
"unsafe"
)
var (
chakra = windows.NewLazySystemDLL("chakra.dll")
procJsGetOwnPropertyDescriptor = chakra.NewProc("JsGetOwnPropertyDescriptor")
)
// object (void*), propertyId (void*), propertyDescriptor (void** out)
r1, _, err := procJsGetOwnPropertyDescriptor.Call(
uintptr(object),
uintptr(propertyId),
uintptr(propertyDescriptor),
)
_ = err // syscall.Errno (valid when the call sets last-error)
_ = r1 // JsErrorCodefunction JsGetOwnPropertyDescriptor(
object: Pointer; // void*
propertyId: Pointer; // void*
propertyDescriptor: Pointer // void** out
): DWORD; stdcall;
external 'chakra.dll' name 'JsGetOwnPropertyDescriptor';result := DllCall("chakra\JsGetOwnPropertyDescriptor"
, "Ptr", object ; void*
, "Ptr", propertyId ; void*
, "Ptr", propertyDescriptor ; void** out
, "UInt") ; return: JsErrorCode●JsGetOwnPropertyDescriptor(object, propertyId, propertyDescriptor) = DLL("chakra.dll", "dword JsGetOwnPropertyDescriptor(void*, void*, void*)")
# 呼び出し: JsGetOwnPropertyDescriptor(object, propertyId, propertyDescriptor)
# object : void* -> "void*"
# propertyId : void* -> "void*"
# propertyDescriptor : 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)。