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MIB_IPMCAST_IF_TABLE

構造体
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サイズx64: 28 バイト / x86: 28 バイト

サイズ=各フィールドのバイト数(x64/x86 で異なる場合は x64/x86 と併記)。x64/x86 列=フィールドのバイトオフセット(HSPで dupptr / lpoke / wpoke 等に使用)。

フィールド

フィールド型サイズx64x86説明
dwNumEntriesDWORD4+0+0table配列に格納されたマルチキャストインターフェース行数を示す。
tableMIB_IPMCAST_IF_ENTRY24+4+4MIB_IPMCAST_IF_ENTRY要素を格納する可変長配列の先頭。

各言語での定義

#include <windows.h>

// MIB_IPMCAST_IF_ENTRY  (x64 24 / x86 24 バイト)
typedef struct MIB_IPMCAST_IF_ENTRY {
    DWORD dwIfIndex;
    DWORD dwTtl;
    DWORD dwProtocol;
    DWORD dwRateLimit;
    DWORD ulInMcastOctets;
    DWORD ulOutMcastOctets;
} MIB_IPMCAST_IF_ENTRY;

// MIB_IPMCAST_IF_TABLE  (x64 28 / x86 28 バイト)
typedef struct MIB_IPMCAST_IF_TABLE {
    DWORD dwNumEntries;
    MIB_IPMCAST_IF_ENTRY table[1];
} MIB_IPMCAST_IF_TABLE;
using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct MIB_IPMCAST_IF_ENTRY
{
    public uint dwIfIndex;
    public uint dwTtl;
    public uint dwProtocol;
    public uint dwRateLimit;
    public uint ulInMcastOctets;
    public uint ulOutMcastOctets;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct MIB_IPMCAST_IF_TABLE
{
    public uint dwNumEntries;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)] public MIB_IPMCAST_IF_ENTRY[] table;
}
Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure MIB_IPMCAST_IF_ENTRY
    Public dwIfIndex As UInteger
    Public dwTtl As UInteger
    Public dwProtocol As UInteger
    Public dwRateLimit As UInteger
    Public ulInMcastOctets As UInteger
    Public ulOutMcastOctets As UInteger
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure MIB_IPMCAST_IF_TABLE
    Public dwNumEntries As UInteger
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=1)> Public table() As MIB_IPMCAST_IF_ENTRY
End Structure
import ctypes
from ctypes import wintypes

class MIB_IPMCAST_IF_ENTRY(ctypes.Structure):
    _fields_ = [
        ("dwIfIndex", wintypes.DWORD),
        ("dwTtl", wintypes.DWORD),
        ("dwProtocol", wintypes.DWORD),
        ("dwRateLimit", wintypes.DWORD),
        ("ulInMcastOctets", wintypes.DWORD),
        ("ulOutMcastOctets", wintypes.DWORD),
    ]

class MIB_IPMCAST_IF_TABLE(ctypes.Structure):
    _fields_ = [
        ("dwNumEntries", wintypes.DWORD),
        ("table", MIB_IPMCAST_IF_ENTRY * 1),
    ]
#[repr(C)]
pub struct MIB_IPMCAST_IF_ENTRY {
    pub dwIfIndex: u32,
    pub dwTtl: u32,
    pub dwProtocol: u32,
    pub dwRateLimit: u32,
    pub ulInMcastOctets: u32,
    pub ulOutMcastOctets: u32,
}

#[repr(C)]
pub struct MIB_IPMCAST_IF_TABLE {
    pub dwNumEntries: u32,
    pub table: [MIB_IPMCAST_IF_ENTRY; 1],
}
import "golang.org/x/sys/windows"

type MIB_IPMCAST_IF_ENTRY struct {
	dwIfIndex uint32
	dwTtl uint32
	dwProtocol uint32
	dwRateLimit uint32
	ulInMcastOctets uint32
	ulOutMcastOctets uint32
}

type MIB_IPMCAST_IF_TABLE struct {
	dwNumEntries uint32
	table [1]MIB_IPMCAST_IF_ENTRY
}
type
  MIB_IPMCAST_IF_ENTRY = record
    dwIfIndex: DWORD;
    dwTtl: DWORD;
    dwProtocol: DWORD;
    dwRateLimit: DWORD;
    ulInMcastOctets: DWORD;
    ulOutMcastOctets: DWORD;
  end;

  MIB_IPMCAST_IF_TABLE = record
    dwNumEntries: DWORD;
    table: array[0..0] of MIB_IPMCAST_IF_ENTRY;
  end;
const MIB_IPMCAST_IF_ENTRY = extern struct {
    dwIfIndex: u32,
    dwTtl: u32,
    dwProtocol: u32,
    dwRateLimit: u32,
    ulInMcastOctets: u32,
    ulOutMcastOctets: u32,
};

const MIB_IPMCAST_IF_TABLE = extern struct {
    dwNumEntries: u32,
    table: [1]MIB_IPMCAST_IF_ENTRY,
};
type
  MIB_IPMCAST_IF_ENTRY {.bycopy.} = object
    dwIfIndex: uint32
    dwTtl: uint32
    dwProtocol: uint32
    dwRateLimit: uint32
    ulInMcastOctets: uint32
    ulOutMcastOctets: uint32

  MIB_IPMCAST_IF_TABLE {.bycopy.} = object
    dwNumEntries: uint32
    table: array[1, MIB_IPMCAST_IF_ENTRY]
struct MIB_IPMCAST_IF_ENTRY
{
    uint dwIfIndex;
    uint dwTtl;
    uint dwProtocol;
    uint dwRateLimit;
    uint ulInMcastOctets;
    uint ulOutMcastOctets;
}

struct MIB_IPMCAST_IF_TABLE
{
    uint dwNumEntries;
    MIB_IPMCAST_IF_ENTRY[1] table;
}

HSP用 定義

HSP3.7/3.8 は構造体機能が無いため4byte整数配列(dim)+peek/poke で操作(32/64bitでサイズ・位置が異なる場合はタブで分割)。IronHSP は NSTRUCT(#defstruct/stdim/->)で32/64bit共通。

; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x64 レイアウト)
; MIB_IPMCAST_IF_TABLE サイズ: 28 バイト(x64)
dim st, 7    ; 4byte整数×7(構造体サイズ 28 / 4 切り上げ)
; dwNumEntries : DWORD (+0, 4byte)  st.0 = 値  /  値 = st.0   (lpoke/lpeek も可)
; table : MIB_IPMCAST_IF_ENTRY (+4, 24byte)  varptr(st)+4 を基点に操作(24byte:入れ子/配列)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。
; IronHSP は NSTRUCT(構造体)をサポート。32bit/64bit どちらでも同じコードで動作します。
; ※GUID・入れ子構造体はデフォルト型でないため、依存する #defstruct を先に定義(下記に同梱)。
#defstruct global MIB_IPMCAST_IF_ENTRY
    #field int dwIfIndex
    #field int dwTtl
    #field int dwProtocol
    #field int dwRateLimit
    #field int ulInMcastOctets
    #field int ulOutMcastOctets
#endstruct

#defstruct global MIB_IPMCAST_IF_TABLE
    #field int dwNumEntries
    #field MIB_IPMCAST_IF_ENTRY table 1
#endstruct

stdim st, MIB_IPMCAST_IF_TABLE        ; NSTRUCT 変数を確保
st->dwNumEntries = 100
mes "dwNumEntries=" + st->dwNumEntries