FilterGetMessage

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

HRESULT FilterGetMessage(
    HANDLE hPort,
    FILTER_MESSAGE_HEADER* lpMessageBuffer,
    DWORD dwMessageBufferSize,
    OVERLAPPED* lpOverlapped   // optional
);

<DllImport("FLTLIB.dll", ExactSpelling:=True)>
Public Shared Function FilterGetMessage(
    hPort As IntPtr,   ' HANDLE
    lpMessageBuffer As IntPtr,   ' FILTER_MESSAGE_HEADER* out
    dwMessageBufferSize As UInteger,   ' DWORD
    lpOverlapped As IntPtr   ' OVERLAPPED* optional, in/out
) As Integer
End Function

' hPort : HANDLE
' lpMessageBuffer : FILTER_MESSAGE_HEADER* out
' dwMessageBufferSize : DWORD
' lpOverlapped : OVERLAPPED* optional, in/out
Declare PtrSafe Function FilterGetMessage Lib "fltlib" ( _
    ByVal hPort As LongPtr, _
    ByVal lpMessageBuffer As LongPtr, _
    ByVal dwMessageBufferSize As Long, _
    ByVal lpOverlapped 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

FilterGetMessage = ctypes.windll.fltlib.FilterGetMessage
FilterGetMessage.restype = ctypes.c_int
FilterGetMessage.argtypes = [
    wintypes.HANDLE,  # hPort : HANDLE
    ctypes.c_void_p,  # lpMessageBuffer : FILTER_MESSAGE_HEADER* out
    wintypes.DWORD,  # dwMessageBufferSize : DWORD
    ctypes.c_void_p,  # lpOverlapped : OVERLAPPED* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('FLTLIB.dll')
FilterGetMessage = Fiddle::Function.new(
  lib['FilterGetMessage'],
  [
    Fiddle::TYPE_VOIDP,  # hPort : HANDLE
    Fiddle::TYPE_VOIDP,  # lpMessageBuffer : FILTER_MESSAGE_HEADER* out
    -Fiddle::TYPE_INT,  # dwMessageBufferSize : DWORD
    Fiddle::TYPE_VOIDP,  # lpOverlapped : OVERLAPPED* optional, in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "fltlib")]
extern "system" {
    fn FilterGetMessage(
        hPort: *mut core::ffi::c_void,  // HANDLE
        lpMessageBuffer: *mut FILTER_MESSAGE_HEADER,  // FILTER_MESSAGE_HEADER* out
        dwMessageBufferSize: u32,  // DWORD
        lpOverlapped: *mut OVERLAPPED  // OVERLAPPED* optional, in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("FLTLIB.dll")]
public static extern int FilterGetMessage(IntPtr hPort, IntPtr lpMessageBuffer, uint dwMessageBufferSize, IntPtr lpOverlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'FLTLIB_FilterGetMessage' -Namespace Win32 -PassThru
# $api::FilterGetMessage(hPort, lpMessageBuffer, dwMessageBufferSize, lpOverlapped)

#uselib "FLTLIB.dll"
#func global FilterGetMessage "FilterGetMessage" sptr, sptr, sptr, sptr
; FilterGetMessage hPort, varptr(lpMessageBuffer), dwMessageBufferSize, varptr(lpOverlapped)   ; 戻り値は stat
; hPort : HANDLE -> "sptr"
; lpMessageBuffer : FILTER_MESSAGE_HEADER* out -> "sptr"
; dwMessageBufferSize : DWORD -> "sptr"
; lpOverlapped : OVERLAPPED* optional, 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 "FLTLIB.dll"
#cfunc global FilterGetMessage "FilterGetMessage" sptr, var, int, var
; res = FilterGetMessage(hPort, lpMessageBuffer, dwMessageBufferSize, lpOverlapped)
; hPort : HANDLE -> "sptr"
; lpMessageBuffer : FILTER_MESSAGE_HEADER* out -> "var"
; dwMessageBufferSize : DWORD -> "int"
; lpOverlapped : OVERLAPPED* optional, 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。

; HRESULT FilterGetMessage(HANDLE hPort, FILTER_MESSAGE_HEADER* lpMessageBuffer, DWORD dwMessageBufferSize, OVERLAPPED* lpOverlapped)
#uselib "FLTLIB.dll"
#cfunc global FilterGetMessage "FilterGetMessage" intptr, var, int, var
; res = FilterGetMessage(hPort, lpMessageBuffer, dwMessageBufferSize, lpOverlapped)
; hPort : HANDLE -> "intptr"
; lpMessageBuffer : FILTER_MESSAGE_HEADER* out -> "var"
; dwMessageBufferSize : DWORD -> "int"
; lpOverlapped : OVERLAPPED* optional, 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 (
	fltlib = windows.NewLazySystemDLL("FLTLIB.dll")
	procFilterGetMessage = fltlib.NewProc("FilterGetMessage")
)

// hPort (HANDLE), lpMessageBuffer (FILTER_MESSAGE_HEADER* out), dwMessageBufferSize (DWORD), lpOverlapped (OVERLAPPED* optional, in/out)
r1, _, err := procFilterGetMessage.Call(
	uintptr(hPort),
	uintptr(lpMessageBuffer),
	uintptr(dwMessageBufferSize),
	uintptr(lpOverlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function FilterGetMessage(
  hPort: THandle;   // HANDLE
  lpMessageBuffer: Pointer;   // FILTER_MESSAGE_HEADER* out
  dwMessageBufferSize: DWORD;   // DWORD
  lpOverlapped: Pointer   // OVERLAPPED* optional, in/out
): Integer; stdcall;
  external 'FLTLIB.dll' name 'FilterGetMessage';

result := DllCall("FLTLIB\FilterGetMessage"
    , "Ptr", hPort   ; HANDLE
    , "Ptr", lpMessageBuffer   ; FILTER_MESSAGE_HEADER* out
    , "UInt", dwMessageBufferSize   ; DWORD
    , "Ptr", lpOverlapped   ; OVERLAPPED* optional, in/out
    , "Int")   ; return: HRESULT

●FilterGetMessage(hPort, lpMessageBuffer, dwMessageBufferSize, lpOverlapped) = DLL("FLTLIB.dll", "int FilterGetMessage(void*, void*, dword, void*)")
# 呼び出し: FilterGetMessage(hPort, lpMessageBuffer, dwMessageBufferSize, lpOverlapped)
# hPort : HANDLE -> "void*"
# lpMessageBuffer : FILTER_MESSAGE_HEADER* out -> "void*"
# dwMessageBufferSize : DWORD -> "dword"
# lpOverlapped : OVERLAPPED* optional, 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)。