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。

#uselib "websocket.dll"
#cfunc global WebSocketSend "WebSocketSend" sptr, int, var, sptr
; res = WebSocketSend(hWebSocket, BufferType, pBuffer, Context)
; hWebSocket : WEB_SOCKET_HANDLE -> "sptr"
; BufferType : WEB_SOCKET_BUFFER_TYPE -> "int"
; pBuffer : WEB_SOCKET_BUFFER* optional -> "var"
; Context : void* optional -> "sptr"
; ※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 WebSocketSend(WEB_SOCKET_HANDLE hWebSocket, WEB_SOCKET_BUFFER_TYPE BufferType, WEB_SOCKET_BUFFER* pBuffer, void* Context)
#uselib "websocket.dll"
#cfunc global WebSocketSend "WebSocketSend" intptr, int, var, intptr
; res = WebSocketSend(hWebSocket, BufferType, pBuffer, Context)
; hWebSocket : WEB_SOCKET_HANDLE -> "intptr"
; BufferType : WEB_SOCKET_BUFFER_TYPE -> "int"
; pBuffer : WEB_SOCKET_BUFFER* optional -> "var"
; Context : void* optional -> "intptr"
; ※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 (
	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)。