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RasGetProjectionInfoEx

関数
RAS接続の拡張プロトコル投影情報を取得する。
DLLRASAPI32.dll呼出規約winapi対応OSWindows 7 以降
📘 Microsoft Learn (日本語) · English

シグネチャ

// RASAPI32.dll
#include <windows.h>

DWORD RasGetProjectionInfoEx(
    HRASCONN hrasconn,
    RAS_PROJECTION_INFO* pRasProjection,   // optional
    DWORD* lpdwSize
);

パラメーター

名前型方向説明
hrasconnHRASCONNinプロジェクション情報を取得する対象のRAS接続ハンドル。
pRasProjectionRAS_PROJECTION_INFO*inoutoptionalPPP等のプロジェクション情報を受け取るRAS_PROJECTION_INFO構造体へのポインタ。NULL指定でサイズ問い合わせを行える。
lpdwSizeDWORD*inoutpRasProjectionバッファのサイズ(バイト)を保持する入出力変数へのポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

// RASAPI32.dll
#include <windows.h>

DWORD RasGetProjectionInfoEx(
    HRASCONN hrasconn,
    RAS_PROJECTION_INFO* pRasProjection,   // optional
    DWORD* lpdwSize
);
[DllImport("RASAPI32.dll", ExactSpelling = true)]
static extern uint RasGetProjectionInfoEx(
    IntPtr hrasconn,   // HRASCONN
    IntPtr pRasProjection,   // RAS_PROJECTION_INFO* optional, in/out
    ref uint lpdwSize   // DWORD* in/out
);
<DllImport("RASAPI32.dll", ExactSpelling:=True)>
Public Shared Function RasGetProjectionInfoEx(
    hrasconn As IntPtr,   ' HRASCONN
    pRasProjection As IntPtr,   ' RAS_PROJECTION_INFO* optional, in/out
    ByRef lpdwSize As UInteger   ' DWORD* in/out
) As UInteger
End Function
' hrasconn : HRASCONN
' pRasProjection : RAS_PROJECTION_INFO* optional, in/out
' lpdwSize : DWORD* in/out
Declare PtrSafe Function RasGetProjectionInfoEx Lib "rasapi32" ( _
    ByVal hrasconn As LongPtr, _
    ByVal pRasProjection As LongPtr, _
    ByRef lpdwSize As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。
import ctypes
from ctypes import wintypes

RasGetProjectionInfoEx = ctypes.windll.rasapi32.RasGetProjectionInfoEx
RasGetProjectionInfoEx.restype = wintypes.DWORD
RasGetProjectionInfoEx.argtypes = [
    wintypes.HANDLE,  # hrasconn : HRASCONN
    ctypes.c_void_p,  # pRasProjection : RAS_PROJECTION_INFO* optional, in/out
    ctypes.POINTER(wintypes.DWORD),  # lpdwSize : DWORD* in/out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RASAPI32.dll')
RasGetProjectionInfoEx = Fiddle::Function.new(
  lib['RasGetProjectionInfoEx'],
  [
    Fiddle::TYPE_VOIDP,  # hrasconn : HRASCONN
    Fiddle::TYPE_VOIDP,  # pRasProjection : RAS_PROJECTION_INFO* optional, in/out
    Fiddle::TYPE_VOIDP,  # lpdwSize : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)
#[link(name = "rasapi32")]
extern "system" {
    fn RasGetProjectionInfoEx(
        hrasconn: *mut core::ffi::c_void,  // HRASCONN
        pRasProjection: *mut RAS_PROJECTION_INFO,  // RAS_PROJECTION_INFO* optional, in/out
        lpdwSize: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("RASAPI32.dll")]
public static extern uint RasGetProjectionInfoEx(IntPtr hrasconn, IntPtr pRasProjection, ref uint lpdwSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RASAPI32_RasGetProjectionInfoEx' -Namespace Win32 -PassThru
# $api::RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize)
#uselib "RASAPI32.dll"
#func global RasGetProjectionInfoEx "RasGetProjectionInfoEx" sptr, sptr, sptr
; RasGetProjectionInfoEx hrasconn, varptr(pRasProjection), varptr(lpdwSize)   ; 戻り値は stat
; hrasconn : HRASCONN -> "sptr"
; pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> "sptr"
; lpdwSize : DWORD* in/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。
出力引数: 
#uselib "RASAPI32.dll"
#cfunc global RasGetProjectionInfoEx "RasGetProjectionInfoEx" sptr, var, var
; res = RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize)
; hrasconn : HRASCONN -> "sptr"
; pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> "var"
; lpdwSize : DWORD* in/out -> "var"
; ※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。
出力引数: 
; DWORD RasGetProjectionInfoEx(HRASCONN hrasconn, RAS_PROJECTION_INFO* pRasProjection, DWORD* lpdwSize)
#uselib "RASAPI32.dll"
#cfunc global RasGetProjectionInfoEx "RasGetProjectionInfoEx" intptr, var, var
; res = RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize)
; hrasconn : HRASCONN -> "intptr"
; pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> "var"
; lpdwSize : DWORD* in/out -> "var"
; ※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。
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	rasapi32 = windows.NewLazySystemDLL("RASAPI32.dll")
	procRasGetProjectionInfoEx = rasapi32.NewProc("RasGetProjectionInfoEx")
)

// hrasconn (HRASCONN), pRasProjection (RAS_PROJECTION_INFO* optional, in/out), lpdwSize (DWORD* in/out)
r1, _, err := procRasGetProjectionInfoEx.Call(
	uintptr(hrasconn),
	uintptr(pRasProjection),
	uintptr(lpdwSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD
function RasGetProjectionInfoEx(
  hrasconn: THandle;   // HRASCONN
  pRasProjection: Pointer;   // RAS_PROJECTION_INFO* optional, in/out
  lpdwSize: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'RASAPI32.dll' name 'RasGetProjectionInfoEx';
result := DllCall("RASAPI32\RasGetProjectionInfoEx"
    , "Ptr", hrasconn   ; HRASCONN
    , "Ptr", pRasProjection   ; RAS_PROJECTION_INFO* optional, in/out
    , "Ptr", lpdwSize   ; DWORD* in/out
    , "UInt")   ; return: DWORD
●RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize) = DLL("RASAPI32.dll", "dword RasGetProjectionInfoEx(void*, void*, void*)")
# 呼び出し: RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize)
# hrasconn : HRASCONN -> "void*"
# pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> "void*"
# lpdwSize : DWORD* in/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)。
const std = @import("std");

extern "rasapi32" fn RasGetProjectionInfoEx(
    hrasconn: ?*anyopaque, // HRASCONN
    pRasProjection: [*c]RAS_PROJECTION_INFO, // RAS_PROJECTION_INFO* optional, in/out
    lpdwSize: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) u32;
proc RasGetProjectionInfoEx(
    hrasconn: pointer,  # HRASCONN
    pRasProjection: ptr RAS_PROJECTION_INFO,  # RAS_PROJECTION_INFO* optional, in/out
    lpdwSize: ptr uint32  # DWORD* in/out
): uint32 {.importc: "RasGetProjectionInfoEx", stdcall, dynlib: "RASAPI32.dll".}
pragma(lib, "rasapi32");
extern(Windows)
uint RasGetProjectionInfoEx(
    void* hrasconn,   // HRASCONN
    RAS_PROJECTION_INFO* pRasProjection,   // RAS_PROJECTION_INFO* optional, in/out
    uint* lpdwSize   // DWORD* in/out
);
ccall((:RasGetProjectionInfoEx, "RASAPI32.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, Ptr{RAS_PROJECTION_INFO}, Ptr{UInt32}),
      hrasconn, pRasProjection, lpdwSize)
# hrasconn : HRASCONN -> Ptr{Cvoid}
# pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> Ptr{RAS_PROJECTION_INFO}
# lpdwSize : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
uint32_t RasGetProjectionInfoEx(
    void* hrasconn,
    void* pRasProjection,
    uint32_t* lpdwSize);
]]
local rasapi32 = ffi.load("rasapi32")
-- rasapi32.RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize)
-- hrasconn : HRASCONN
-- pRasProjection : RAS_PROJECTION_INFO* optional, in/out
-- lpdwSize : DWORD* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
const koffi = require('koffi');
const lib = koffi.load('RASAPI32.dll');
const RasGetProjectionInfoEx = lib.func('__stdcall', 'RasGetProjectionInfoEx', 'uint32_t', ['void *', 'void *', 'uint32_t *']);
// RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize)
// hrasconn : HRASCONN -> 'void *'
// pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> 'void *'
// lpdwSize : DWORD* in/out -> 'uint32_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
const lib = Deno.dlopen("RASAPI32.dll", {
  RasGetProjectionInfoEx: { parameters: ["pointer", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize)
// hrasconn : HRASCONN -> "pointer"
// pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> "pointer"
// lpdwSize : DWORD* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
uint32_t RasGetProjectionInfoEx(
    void* hrasconn,
    void* pRasProjection,
    uint32_t* lpdwSize);
C, "RASAPI32.dll");
// $ffi->RasGetProjectionInfoEx(hrasconn, pRasProjection, lpdwSize);
// hrasconn : HRASCONN
// pRasProjection : RAS_PROJECTION_INFO* optional, in/out
// lpdwSize : DWORD* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。
import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Rasapi32 extends StdCallLibrary {
    Rasapi32 INSTANCE = Native.load("rasapi32", Rasapi32.class);
    int RasGetProjectionInfoEx(
        Pointer hrasconn,   // HRASCONN
        Pointer pRasProjection,   // RAS_PROJECTION_INFO* optional, in/out
        IntByReference lpdwSize   // DWORD* in/out
    );
}
@[Link("rasapi32")]
lib LibRASAPI32
  fun RasGetProjectionInfoEx = RasGetProjectionInfoEx(
    hrasconn : Void*,   # HRASCONN
    pRasProjection : RAS_PROJECTION_INFO*,   # RAS_PROJECTION_INFO* optional, in/out
    lpdwSize : UInt32*   # DWORD* in/out
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。
import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef RasGetProjectionInfoExNative = Uint32 Function(Pointer<Void>, Pointer<Void>, Pointer<Uint32>);
typedef RasGetProjectionInfoExDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Uint32>);
final RasGetProjectionInfoEx = DynamicLibrary.open('RASAPI32.dll')
    .lookupFunction<RasGetProjectionInfoExNative, RasGetProjectionInfoExDart>('RasGetProjectionInfoEx');
// hrasconn : HRASCONN -> Pointer<Void>
// pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> Pointer<Void>
// lpdwSize : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function RasGetProjectionInfoEx(
  hrasconn: THandle;   // HRASCONN
  pRasProjection: Pointer;   // RAS_PROJECTION_INFO* optional, in/out
  lpdwSize: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'RASAPI32.dll' name 'RasGetProjectionInfoEx';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "RasGetProjectionInfoEx"
  c_RasGetProjectionInfoEx :: Ptr () -> Ptr () -> Ptr Word32 -> IO Word32
-- hrasconn : HRASCONN -> Ptr ()
-- pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> Ptr ()
-- lpdwSize : DWORD* in/out -> Ptr Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。
open Ctypes
open Foreign

let rasgetprojectioninfoex =
  foreign "RasGetProjectionInfoEx"
    ((ptr void) @-> (ptr void) @-> (ptr uint32_t) @-> returning uint32_t)
(* hrasconn : HRASCONN -> (ptr void) *)
(* pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> (ptr void) *)
(* lpdwSize : DWORD* in/out -> (ptr uint32_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)
(cffi:define-foreign-library rasapi32 (t "RASAPI32.dll"))
(cffi:use-foreign-library rasapi32)

(cffi:defcfun ("RasGetProjectionInfoEx" ras-get-projection-info-ex :convention :stdcall) :uint32
  (hrasconn :pointer)   ; HRASCONN
  (p-ras-projection :pointer)   ; RAS_PROJECTION_INFO* optional, in/out
  (lpdw-size :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $RasGetProjectionInfoEx = Win32::API::More->new('RASAPI32',
    'DWORD RasGetProjectionInfoEx(HANDLE hrasconn, LPVOID pRasProjection, LPVOID lpdwSize)');
# my $ret = $RasGetProjectionInfoEx->Call($hrasconn, $pRasProjection, $lpdwSize);
# hrasconn : HRASCONN -> HANDLE
# pRasProjection : RAS_PROJECTION_INFO* optional, in/out -> LPVOID
# lpdwSize : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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