WebSocketSend

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

HRESULT WebSocketSend(
    WEB_SOCKET_HANDLE hWebSocket,
    WEB_SOCKET_BUFFER_TYPE BufferType,
    WEB_SOCKET_BUFFER* pBuffer,   // optional
    void* Context   // optional
);

<DllImport("websocket.dll", ExactSpelling:=True)>
Public Shared Function WebSocketSend(
    hWebSocket As IntPtr,   ' WEB_SOCKET_HANDLE
    BufferType As Integer,   ' WEB_SOCKET_BUFFER_TYPE
    pBuffer As IntPtr,   ' WEB_SOCKET_BUFFER* optional
    Context As IntPtr   ' void* optional
) As Integer
End Function

' hWebSocket : WEB_SOCKET_HANDLE
' BufferType : WEB_SOCKET_BUFFER_TYPE
' pBuffer : WEB_SOCKET_BUFFER* optional
' Context : void* optional
Declare PtrSafe Function WebSocketSend Lib "websocket" ( _
    ByVal hWebSocket As LongPtr, _
    ByVal BufferType As Long, _
    ByVal pBuffer As LongPtr, _
    ByVal Context 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

WebSocketSend = ctypes.windll.websocket.WebSocketSend
WebSocketSend.restype = ctypes.c_int
WebSocketSend.argtypes = [
    wintypes.HANDLE,  # hWebSocket : WEB_SOCKET_HANDLE
    ctypes.c_int,  # BufferType : WEB_SOCKET_BUFFER_TYPE
    ctypes.c_void_p,  # pBuffer : WEB_SOCKET_BUFFER* optional
    ctypes.POINTER(None),  # Context : void* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('websocket.dll')
WebSocketSend = Fiddle::Function.new(
  lib['WebSocketSend'],
  [
    Fiddle::TYPE_VOIDP,  # hWebSocket : WEB_SOCKET_HANDLE
    Fiddle::TYPE_INT,  # BufferType : WEB_SOCKET_BUFFER_TYPE
    Fiddle::TYPE_VOIDP,  # pBuffer : WEB_SOCKET_BUFFER* optional
    Fiddle::TYPE_VOIDP,  # Context : void* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "websocket")]
extern "system" {
    fn WebSocketSend(
        hWebSocket: *mut core::ffi::c_void,  // WEB_SOCKET_HANDLE
        BufferType: i32,  // WEB_SOCKET_BUFFER_TYPE
        pBuffer: *mut WEB_SOCKET_BUFFER,  // WEB_SOCKET_BUFFER* optional
        Context: *mut ()  // void* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("websocket.dll")]
public static extern int WebSocketSend(IntPtr hWebSocket, int BufferType, IntPtr pBuffer, IntPtr Context);
"@
$api = Add-Type -MemberDefinition $sig -Name 'websocket_WebSocketSend' -Namespace Win32 -PassThru
# $api::WebSocketSend(hWebSocket, BufferType, pBuffer, Context)

#uselib "websocket.dll"
#func global WebSocketSend "WebSocketSend" sptr, sptr, sptr, sptr
; WebSocketSend hWebSocket, BufferType, varptr(pBuffer), Context   ; 戻り値は stat
; hWebSocket : WEB_SOCKET_HANDLE -> "sptr"
; BufferType : WEB_SOCKET_BUFFER_TYPE -> "sptr"
; pBuffer : WEB_SOCKET_BUFFER* optional -> "sptr"
; Context : void* optional -> "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。

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

var (
	websocket = windows.NewLazySystemDLL("websocket.dll")
	procWebSocketSend = websocket.NewProc("WebSocketSend")
)

// hWebSocket (WEB_SOCKET_HANDLE), BufferType (WEB_SOCKET_BUFFER_TYPE), pBuffer (WEB_SOCKET_BUFFER* optional), Context (void* optional)
r1, _, err := procWebSocketSend.Call(
	uintptr(hWebSocket),
	uintptr(BufferType),
	uintptr(pBuffer),
	uintptr(Context),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WebSocketSend(
  hWebSocket: THandle;   // WEB_SOCKET_HANDLE
  BufferType: Integer;   // WEB_SOCKET_BUFFER_TYPE
  pBuffer: Pointer;   // WEB_SOCKET_BUFFER* optional
  Context: Pointer   // void* optional
): Integer; stdcall;
  external 'websocket.dll' name 'WebSocketSend';

result := DllCall("websocket\WebSocketSend"
    , "Ptr", hWebSocket   ; WEB_SOCKET_HANDLE
    , "Int", BufferType   ; WEB_SOCKET_BUFFER_TYPE
    , "Ptr", pBuffer   ; WEB_SOCKET_BUFFER* optional
    , "Ptr", Context   ; void* optional
    , "Int")   ; return: HRESULT

●WebSocketSend(hWebSocket, BufferType, pBuffer, Context) = DLL("websocket.dll", "int WebSocketSend(void*, int, void*, void*)")
# 呼び出し: WebSocketSend(hWebSocket, BufferType, pBuffer, Context)
# hWebSocket : WEB_SOCKET_HANDLE -> "void*"
# BufferType : WEB_SOCKET_BUFFER_TYPE -> "int"
# pBuffer : WEB_SOCKET_BUFFER* optional -> "void*"
# Context : void* optional -> "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 "websocket" fn WebSocketSend(
    hWebSocket: ?*anyopaque, // WEB_SOCKET_HANDLE
    BufferType: i32, // WEB_SOCKET_BUFFER_TYPE
    pBuffer: [*c]WEB_SOCKET_BUFFER, // WEB_SOCKET_BUFFER* optional
    Context: ?*anyopaque // void* optional
) callconv(std.os.windows.WINAPI) i32;

proc WebSocketSend(
    hWebSocket: pointer,  # WEB_SOCKET_HANDLE
    BufferType: int32,  # WEB_SOCKET_BUFFER_TYPE
    pBuffer: ptr WEB_SOCKET_BUFFER,  # WEB_SOCKET_BUFFER* optional
    Context: pointer  # void* optional
): int32 {.importc: "WebSocketSend", stdcall, dynlib: "websocket.dll".}

pragma(lib, "websocket");
extern(Windows)
int WebSocketSend(
    void* hWebSocket,   // WEB_SOCKET_HANDLE
    int BufferType,   // WEB_SOCKET_BUFFER_TYPE
    WEB_SOCKET_BUFFER* pBuffer,   // WEB_SOCKET_BUFFER* optional
    void* Context   // void* optional
);

ccall((:WebSocketSend, "websocket.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Int32, Ptr{WEB_SOCKET_BUFFER}, Ptr{Cvoid}),
      hWebSocket, BufferType, pBuffer, Context)
# hWebSocket : WEB_SOCKET_HANDLE -> Ptr{Cvoid}
# BufferType : WEB_SOCKET_BUFFER_TYPE -> Int32
# pBuffer : WEB_SOCKET_BUFFER* optional -> Ptr{WEB_SOCKET_BUFFER}
# Context : void* optional -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t WebSocketSend(
    void* hWebSocket,
    int32_t BufferType,
    void* pBuffer,
    void* Context);
]]
local websocket = ffi.load("websocket")
-- websocket.WebSocketSend(hWebSocket, BufferType, pBuffer, Context)
-- hWebSocket : WEB_SOCKET_HANDLE
-- BufferType : WEB_SOCKET_BUFFER_TYPE
-- pBuffer : WEB_SOCKET_BUFFER* optional
-- Context : void* optional
-- 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('websocket.dll');
const WebSocketSend = lib.func('__stdcall', 'WebSocketSend', 'int32_t', ['void *', 'int32_t', 'void *', 'void *']);
// WebSocketSend(hWebSocket, BufferType, pBuffer, Context)
// hWebSocket : WEB_SOCKET_HANDLE -> 'void *'
// BufferType : WEB_SOCKET_BUFFER_TYPE -> 'int32_t'
// pBuffer : WEB_SOCKET_BUFFER* optional -> 'void *'
// Context : void* optional -> 'void *'
// 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("websocket.dll", {
  WebSocketSend: { parameters: ["pointer", "i32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.WebSocketSend(hWebSocket, BufferType, pBuffer, Context)
// hWebSocket : WEB_SOCKET_HANDLE -> "pointer"
// BufferType : WEB_SOCKET_BUFFER_TYPE -> "i32"
// pBuffer : WEB_SOCKET_BUFFER* optional -> "pointer"
// Context : void* optional -> "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
int32_t WebSocketSend(
    void* hWebSocket,
    int32_t BufferType,
    void* pBuffer,
    void* Context);
C, "websocket.dll");
// $ffi->WebSocketSend(hWebSocket, BufferType, pBuffer, Context);
// hWebSocket : WEB_SOCKET_HANDLE
// BufferType : WEB_SOCKET_BUFFER_TYPE
// pBuffer : WEB_SOCKET_BUFFER* optional
// Context : void* optional
// 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 Websocket extends StdCallLibrary {
    Websocket INSTANCE = Native.load("websocket", Websocket.class);
    int WebSocketSend(
        Pointer hWebSocket,   // WEB_SOCKET_HANDLE
        int BufferType,   // WEB_SOCKET_BUFFER_TYPE
        Pointer pBuffer,   // WEB_SOCKET_BUFFER* optional
        Pointer Context   // void* optional
    );
}

@[Link("websocket")]
lib Libwebsocket
  fun WebSocketSend = WebSocketSend(
    hWebSocket : Void*,   # WEB_SOCKET_HANDLE
    BufferType : Int32,   # WEB_SOCKET_BUFFER_TYPE
    pBuffer : WEB_SOCKET_BUFFER*,   # WEB_SOCKET_BUFFER* optional
    Context : Void*   # void* optional
  ) : Int32
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 WebSocketSendNative = Int32 Function(Pointer<Void>, Int32, Pointer<Void>, Pointer<Void>);
typedef WebSocketSendDart = int Function(Pointer<Void>, int, Pointer<Void>, Pointer<Void>);
final WebSocketSend = DynamicLibrary.open('websocket.dll')
    .lookupFunction<WebSocketSendNative, WebSocketSendDart>('WebSocketSend');
// hWebSocket : WEB_SOCKET_HANDLE -> Pointer<Void>
// BufferType : WEB_SOCKET_BUFFER_TYPE -> Int32
// pBuffer : WEB_SOCKET_BUFFER* optional -> Pointer<Void>
// Context : void* optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WebSocketSend(
  hWebSocket: THandle;   // WEB_SOCKET_HANDLE
  BufferType: Integer;   // WEB_SOCKET_BUFFER_TYPE
  pBuffer: Pointer;   // WEB_SOCKET_BUFFER* optional
  Context: Pointer   // void* optional
): Integer; stdcall;
  external 'websocket.dll' name 'WebSocketSend';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "WebSocketSend"
  c_WebSocketSend :: Ptr () -> Int32 -> Ptr () -> Ptr () -> IO Int32
-- hWebSocket : WEB_SOCKET_HANDLE -> Ptr ()
-- BufferType : WEB_SOCKET_BUFFER_TYPE -> Int32
-- pBuffer : WEB_SOCKET_BUFFER* optional -> Ptr ()
-- Context : void* optional -> Ptr ()
-- 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 websocketsend =
  foreign "WebSocketSend"
    ((ptr void) @-> int32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* hWebSocket : WEB_SOCKET_HANDLE -> (ptr void) *)
(* BufferType : WEB_SOCKET_BUFFER_TYPE -> int32_t *)
(* pBuffer : WEB_SOCKET_BUFFER* optional -> (ptr void) *)
(* Context : void* optional -> (ptr void) *)
(* 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 websocket (t "websocket.dll"))
(cffi:use-foreign-library websocket)

(cffi:defcfun ("WebSocketSend" web-socket-send :convention :stdcall) :int32
  (h-web-socket :pointer)   ; WEB_SOCKET_HANDLE
  (buffer-type :int32)   ; WEB_SOCKET_BUFFER_TYPE
  (p-buffer :pointer)   ; WEB_SOCKET_BUFFER* optional
  (context :pointer))   ; void* optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WebSocketSend = Win32::API::More->new('websocket',
    'int WebSocketSend(HANDLE hWebSocket, int BufferType, LPVOID pBuffer, LPVOID Context)');
# my $ret = $WebSocketSend->Call($hWebSocket, $BufferType, $pBuffer, $Context);
# hWebSocket : WEB_SOCKET_HANDLE -> HANDLE
# BufferType : WEB_SOCKET_BUFFER_TYPE -> int
# pBuffer : WEB_SOCKET_BUFFER* optional -> LPVOID
# Context : void* optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。