NetMessageBufferSend

// NETAPI32.dll
#include <windows.h>

DWORD NetMessageBufferSend(
    LPCWSTR servername,   // optional
    LPCWSTR msgname,
    LPCWSTR fromname,
    BYTE* buf,
    DWORD buflen
);

<DllImport("NETAPI32.dll", ExactSpelling:=True)>
Public Shared Function NetMessageBufferSend(
    <MarshalAs(UnmanagedType.LPWStr)> servername As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> msgname As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> fromname As String,   ' LPCWSTR
    buf As IntPtr,   ' BYTE*
    buflen As UInteger   ' DWORD
) As UInteger
End Function

' servername : LPCWSTR optional
' msgname : LPCWSTR
' fromname : LPCWSTR
' buf : BYTE*
' buflen : DWORD
Declare PtrSafe Function NetMessageBufferSend Lib "netapi32" ( _
    ByVal servername As LongPtr, _
    ByVal msgname As LongPtr, _
    ByVal fromname As LongPtr, _
    ByVal buf As LongPtr, _
    ByVal buflen 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

NetMessageBufferSend = ctypes.windll.netapi32.NetMessageBufferSend
NetMessageBufferSend.restype = wintypes.DWORD
NetMessageBufferSend.argtypes = [
    wintypes.LPCWSTR,  # servername : LPCWSTR optional
    wintypes.LPCWSTR,  # msgname : LPCWSTR
    wintypes.LPCWSTR,  # fromname : LPCWSTR
    ctypes.POINTER(ctypes.c_ubyte),  # buf : BYTE*
    wintypes.DWORD,  # buflen : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('NETAPI32.dll')
NetMessageBufferSend = Fiddle::Function.new(
  lib['NetMessageBufferSend'],
  [
    Fiddle::TYPE_VOIDP,  # servername : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # msgname : LPCWSTR
    Fiddle::TYPE_VOIDP,  # fromname : LPCWSTR
    Fiddle::TYPE_VOIDP,  # buf : BYTE*
    -Fiddle::TYPE_INT,  # buflen : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "netapi32")]
extern "system" {
    fn NetMessageBufferSend(
        servername: *const u16,  // LPCWSTR optional
        msgname: *const u16,  // LPCWSTR
        fromname: *const u16,  // LPCWSTR
        buf: *mut u8,  // BYTE*
        buflen: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("NETAPI32.dll")]
public static extern uint NetMessageBufferSend([MarshalAs(UnmanagedType.LPWStr)] string servername, [MarshalAs(UnmanagedType.LPWStr)] string msgname, [MarshalAs(UnmanagedType.LPWStr)] string fromname, IntPtr buf, uint buflen);
"@
$api = Add-Type -MemberDefinition $sig -Name 'NETAPI32_NetMessageBufferSend' -Namespace Win32 -PassThru
# $api::NetMessageBufferSend(servername, msgname, fromname, buf, buflen)

#uselib "NETAPI32.dll"
#func global NetMessageBufferSend "NetMessageBufferSend" sptr, sptr, sptr, sptr, sptr
; NetMessageBufferSend servername, msgname, fromname, varptr(buf), buflen   ; 戻り値は stat
; servername : LPCWSTR optional -> "sptr"
; msgname : LPCWSTR -> "sptr"
; fromname : LPCWSTR -> "sptr"
; buf : BYTE* -> "sptr"
; buflen : DWORD -> "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 "NETAPI32.dll"
#cfunc global NetMessageBufferSend "NetMessageBufferSend" wstr, wstr, wstr, var, int
; res = NetMessageBufferSend(servername, msgname, fromname, buf, buflen)
; servername : LPCWSTR optional -> "wstr"
; msgname : LPCWSTR -> "wstr"
; fromname : LPCWSTR -> "wstr"
; buf : BYTE* -> "var"
; buflen : DWORD -> "int"
; ※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 NetMessageBufferSend(LPCWSTR servername, LPCWSTR msgname, LPCWSTR fromname, BYTE* buf, DWORD buflen)
#uselib "NETAPI32.dll"
#cfunc global NetMessageBufferSend "NetMessageBufferSend" wstr, wstr, wstr, var, int
; res = NetMessageBufferSend(servername, msgname, fromname, buf, buflen)
; servername : LPCWSTR optional -> "wstr"
; msgname : LPCWSTR -> "wstr"
; fromname : LPCWSTR -> "wstr"
; buf : BYTE* -> "var"
; buflen : DWORD -> "int"
; ※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 (
	netapi32 = windows.NewLazySystemDLL("NETAPI32.dll")
	procNetMessageBufferSend = netapi32.NewProc("NetMessageBufferSend")
)

// servername (LPCWSTR optional), msgname (LPCWSTR), fromname (LPCWSTR), buf (BYTE*), buflen (DWORD)
r1, _, err := procNetMessageBufferSend.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(servername))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(msgname))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(fromname))),
	uintptr(buf),
	uintptr(buflen),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function NetMessageBufferSend(
  servername: PWideChar;   // LPCWSTR optional
  msgname: PWideChar;   // LPCWSTR
  fromname: PWideChar;   // LPCWSTR
  buf: Pointer;   // BYTE*
  buflen: DWORD   // DWORD
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'NetMessageBufferSend';

result := DllCall("NETAPI32\NetMessageBufferSend"
    , "WStr", servername   ; LPCWSTR optional
    , "WStr", msgname   ; LPCWSTR
    , "WStr", fromname   ; LPCWSTR
    , "Ptr", buf   ; BYTE*
    , "UInt", buflen   ; DWORD
    , "UInt")   ; return: DWORD

●NetMessageBufferSend(servername, msgname, fromname, buf, buflen) = DLL("NETAPI32.dll", "dword NetMessageBufferSend(char*, char*, char*, void*, dword)")
# 呼び出し: NetMessageBufferSend(servername, msgname, fromname, buf, buflen)
# servername : LPCWSTR optional -> "char*"
# msgname : LPCWSTR -> "char*"
# fromname : LPCWSTR -> "char*"
# buf : BYTE* -> "void*"
# buflen : DWORD -> "dword"
# 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)。