NdrAllocate

関数

NDRスタブメッセージ用にメモリを割り当てる。

DLLRPCRT4.dll呼出規約winapi

シグネチャ

// RPCRT4.dll
#include <windows.h>

void* NdrAllocate(
    MIDL_STUB_MESSAGE* pStubMsg,
    UINT_PTR Len
);

パラメーター

名前	型	方向
pStubMsg	MIDL_STUB_MESSAGE*	inout
Len	UINT_PTR	in

戻り値の型: void*

各言語での呼び出し定義

// RPCRT4.dll
#include <windows.h>

void* NdrAllocate(
    MIDL_STUB_MESSAGE* pStubMsg,
    UINT_PTR Len
);

[DllImport("RPCRT4.dll", ExactSpelling = true)]
static extern IntPtr NdrAllocate(
    IntPtr pStubMsg,   // MIDL_STUB_MESSAGE* in/out
    UIntPtr Len   // UINT_PTR
);

<DllImport("RPCRT4.dll", ExactSpelling:=True)>
Public Shared Function NdrAllocate(
    pStubMsg As IntPtr,   ' MIDL_STUB_MESSAGE* in/out
    Len As UIntPtr   ' UINT_PTR
) As IntPtr
End Function

' pStubMsg : MIDL_STUB_MESSAGE* in/out
' Len : UINT_PTR
Declare PtrSafe Function NdrAllocate Lib "rpcrt4" ( _
    ByVal pStubMsg As LongPtr, _
    ByVal Len As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

NdrAllocate = ctypes.windll.rpcrt4.NdrAllocate
NdrAllocate.restype = ctypes.c_void_p
NdrAllocate.argtypes = [
    ctypes.c_void_p,  # pStubMsg : MIDL_STUB_MESSAGE* in/out
    ctypes.c_size_t,  # Len : UINT_PTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RPCRT4.dll')
NdrAllocate = Fiddle::Function.new(
  lib['NdrAllocate'],
  [
    Fiddle::TYPE_VOIDP,  # pStubMsg : MIDL_STUB_MESSAGE* in/out
    Fiddle::TYPE_UINTPTR_T,  # Len : UINT_PTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "rpcrt4")]
extern "system" {
    fn NdrAllocate(
        pStubMsg: *mut MIDL_STUB_MESSAGE,  // MIDL_STUB_MESSAGE* in/out
        Len: usize  // UINT_PTR
    ) -> *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("RPCRT4.dll")]
public static extern IntPtr NdrAllocate(IntPtr pStubMsg, UIntPtr Len);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RPCRT4_NdrAllocate' -Namespace Win32 -PassThru
# $api::NdrAllocate(pStubMsg, Len)

#uselib "RPCRT4.dll"
#func global NdrAllocate "NdrAllocate" sptr, sptr
; NdrAllocate varptr(pStubMsg), Len   ; 戻り値は stat
; pStubMsg : MIDL_STUB_MESSAGE* in/out -> "sptr"
; Len : UINT_PTR -> "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。

出力引数:

#uselib "RPCRT4.dll"
#cfunc global NdrAllocate "NdrAllocate" var, sptr
; res = NdrAllocate(pStubMsg, Len)
; pStubMsg : MIDL_STUB_MESSAGE* in/out -> "var"
; Len : UINT_PTR -> "sptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。#uselib "RPCRT4.dll"
#cfunc global NdrAllocate "NdrAllocate" sptr, sptr
; res = NdrAllocate(varptr(pStubMsg), Len)
; pStubMsg : MIDL_STUB_MESSAGE* in/out -> "sptr"
; Len : UINT_PTR -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; void* NdrAllocate(MIDL_STUB_MESSAGE* pStubMsg, UINT_PTR Len)
#uselib "RPCRT4.dll"
#cfunc global NdrAllocate "NdrAllocate" var, intptr
; res = NdrAllocate(pStubMsg, Len)
; pStubMsg : MIDL_STUB_MESSAGE* in/out -> "var"
; Len : UINT_PTR -> "intptr"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; void* NdrAllocate(MIDL_STUB_MESSAGE* pStubMsg, UINT_PTR Len)
#uselib "RPCRT4.dll"
#cfunc global NdrAllocate "NdrAllocate" intptr, intptr
; res = NdrAllocate(varptr(pStubMsg), Len)
; pStubMsg : MIDL_STUB_MESSAGE* in/out -> "intptr"
; Len : UINT_PTR -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	rpcrt4 = windows.NewLazySystemDLL("RPCRT4.dll")
	procNdrAllocate = rpcrt4.NewProc("NdrAllocate")
)

// pStubMsg (MIDL_STUB_MESSAGE* in/out), Len (UINT_PTR)
r1, _, err := procNdrAllocate.Call(
	uintptr(pStubMsg),
	uintptr(Len),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void*

function NdrAllocate(
  pStubMsg: Pointer;   // MIDL_STUB_MESSAGE* in/out
  Len: NativeUInt   // UINT_PTR
): Pointer; stdcall;
  external 'RPCRT4.dll' name 'NdrAllocate';

result := DllCall("RPCRT4\NdrAllocate"
    , "Ptr", pStubMsg   ; MIDL_STUB_MESSAGE* in/out
    , "UPtr", Len   ; UINT_PTR
    , "Ptr")   ; return: void*

●NdrAllocate(pStubMsg, Len) = DLL("RPCRT4.dll", "void* NdrAllocate(void*, int)")
# 呼び出し: NdrAllocate(pStubMsg, Len)
# pStubMsg : MIDL_STUB_MESSAGE* in/out -> "void*"
# Len : UINT_PTR -> "int"
# 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)。