MgmGetNextMfe

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

DWORD MgmGetNextMfe(
    MIB_IPMCAST_MFE* pimmStart,
    DWORD* pdwBufferSize,
    BYTE* pbBuffer,
    DWORD* pdwNumEntries
);

<DllImport("rtm.dll", ExactSpelling:=True)>
Public Shared Function MgmGetNextMfe(
    pimmStart As IntPtr,   ' MIB_IPMCAST_MFE* in/out
    ByRef pdwBufferSize As UInteger,   ' DWORD* in/out
    pbBuffer As IntPtr,   ' BYTE* in/out
    ByRef pdwNumEntries As UInteger   ' DWORD* in/out
) As UInteger
End Function

' pimmStart : MIB_IPMCAST_MFE* in/out
' pdwBufferSize : DWORD* in/out
' pbBuffer : BYTE* in/out
' pdwNumEntries : DWORD* in/out
Declare PtrSafe Function MgmGetNextMfe Lib "rtm" ( _
    ByVal pimmStart As LongPtr, _
    ByRef pdwBufferSize As Long, _
    ByVal pbBuffer As LongPtr, _
    ByRef pdwNumEntries 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

MgmGetNextMfe = ctypes.windll.rtm.MgmGetNextMfe
MgmGetNextMfe.restype = wintypes.DWORD
MgmGetNextMfe.argtypes = [
    ctypes.c_void_p,  # pimmStart : MIB_IPMCAST_MFE* in/out
    ctypes.POINTER(wintypes.DWORD),  # pdwBufferSize : DWORD* in/out
    ctypes.POINTER(ctypes.c_ubyte),  # pbBuffer : BYTE* in/out
    ctypes.POINTER(wintypes.DWORD),  # pdwNumEntries : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('rtm.dll')
MgmGetNextMfe = Fiddle::Function.new(
  lib['MgmGetNextMfe'],
  [
    Fiddle::TYPE_VOIDP,  # pimmStart : MIB_IPMCAST_MFE* in/out
    Fiddle::TYPE_VOIDP,  # pdwBufferSize : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # pbBuffer : BYTE* in/out
    Fiddle::TYPE_VOIDP,  # pdwNumEntries : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "rtm")]
extern "system" {
    fn MgmGetNextMfe(
        pimmStart: *mut MIB_IPMCAST_MFE,  // MIB_IPMCAST_MFE* in/out
        pdwBufferSize: *mut u32,  // DWORD* in/out
        pbBuffer: *mut u8,  // BYTE* in/out
        pdwNumEntries: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("rtm.dll")]
public static extern uint MgmGetNextMfe(IntPtr pimmStart, ref uint pdwBufferSize, IntPtr pbBuffer, ref uint pdwNumEntries);
"@
$api = Add-Type -MemberDefinition $sig -Name 'rtm_MgmGetNextMfe' -Namespace Win32 -PassThru
# $api::MgmGetNextMfe(pimmStart, pdwBufferSize, pbBuffer, pdwNumEntries)

#uselib "rtm.dll"
#func global MgmGetNextMfe "MgmGetNextMfe" sptr, sptr, sptr, sptr
; MgmGetNextMfe varptr(pimmStart), varptr(pdwBufferSize), varptr(pbBuffer), varptr(pdwNumEntries)   ; 戻り値は stat
; pimmStart : MIB_IPMCAST_MFE* in/out -> "sptr"
; pdwBufferSize : DWORD* in/out -> "sptr"
; pbBuffer : BYTE* in/out -> "sptr"
; pdwNumEntries : 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。

#uselib "rtm.dll"
#cfunc global MgmGetNextMfe "MgmGetNextMfe" var, var, var, var
; res = MgmGetNextMfe(pimmStart, pdwBufferSize, pbBuffer, pdwNumEntries)
; pimmStart : MIB_IPMCAST_MFE* in/out -> "var"
; pdwBufferSize : DWORD* in/out -> "var"
; pbBuffer : BYTE* in/out -> "var"
; pdwNumEntries : 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。

; DWORD MgmGetNextMfe(MIB_IPMCAST_MFE* pimmStart, DWORD* pdwBufferSize, BYTE* pbBuffer, DWORD* pdwNumEntries)
#uselib "rtm.dll"
#cfunc global MgmGetNextMfe "MgmGetNextMfe" var, var, var, var
; res = MgmGetNextMfe(pimmStart, pdwBufferSize, pbBuffer, pdwNumEntries)
; pimmStart : MIB_IPMCAST_MFE* in/out -> "var"
; pdwBufferSize : DWORD* in/out -> "var"
; pbBuffer : BYTE* in/out -> "var"
; pdwNumEntries : 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 (
	rtm = windows.NewLazySystemDLL("rtm.dll")
	procMgmGetNextMfe = rtm.NewProc("MgmGetNextMfe")
)

// pimmStart (MIB_IPMCAST_MFE* in/out), pdwBufferSize (DWORD* in/out), pbBuffer (BYTE* in/out), pdwNumEntries (DWORD* in/out)
r1, _, err := procMgmGetNextMfe.Call(
	uintptr(pimmStart),
	uintptr(pdwBufferSize),
	uintptr(pbBuffer),
	uintptr(pdwNumEntries),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MgmGetNextMfe(
  pimmStart: Pointer;   // MIB_IPMCAST_MFE* in/out
  pdwBufferSize: Pointer;   // DWORD* in/out
  pbBuffer: Pointer;   // BYTE* in/out
  pdwNumEntries: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'rtm.dll' name 'MgmGetNextMfe';

result := DllCall("rtm\MgmGetNextMfe"
    , "Ptr", pimmStart   ; MIB_IPMCAST_MFE* in/out
    , "Ptr", pdwBufferSize   ; DWORD* in/out
    , "Ptr", pbBuffer   ; BYTE* in/out
    , "Ptr", pdwNumEntries   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●MgmGetNextMfe(pimmStart, pdwBufferSize, pbBuffer, pdwNumEntries) = DLL("rtm.dll", "dword MgmGetNextMfe(void*, void*, void*, void*)")
# 呼び出し: MgmGetNextMfe(pimmStart, pdwBufferSize, pbBuffer, pdwNumEntries)
# pimmStart : MIB_IPMCAST_MFE* in/out -> "void*"
# pdwBufferSize : DWORD* in/out -> "void*"
# pbBuffer : BYTE* in/out -> "void*"
# pdwNumEntries : 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)。