ScCountNotifications

// MAPI32.dll
#include <windows.h>

INT ScCountNotifications(
    INT cNotifications,
    NOTIFICATION* lpNotifications,
    DWORD* lpcb
);

<DllImport("MAPI32.dll", ExactSpelling:=True)>
Public Shared Function ScCountNotifications(
    cNotifications As Integer,   ' INT
    lpNotifications As IntPtr,   ' NOTIFICATION* in/out
    ByRef lpcb As UInteger   ' DWORD* in/out
) As Integer
End Function

' cNotifications : INT
' lpNotifications : NOTIFICATION* in/out
' lpcb : DWORD* in/out
Declare PtrSafe Function ScCountNotifications Lib "mapi32" ( _
    ByVal cNotifications As Long, _
    ByVal lpNotifications As LongPtr, _
    ByRef lpcb 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

ScCountNotifications = ctypes.windll.mapi32.ScCountNotifications
ScCountNotifications.restype = ctypes.c_int
ScCountNotifications.argtypes = [
    ctypes.c_int,  # cNotifications : INT
    ctypes.c_void_p,  # lpNotifications : NOTIFICATION* in/out
    ctypes.POINTER(wintypes.DWORD),  # lpcb : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MAPI32.dll')
ScCountNotifications = Fiddle::Function.new(
  lib['ScCountNotifications'],
  [
    Fiddle::TYPE_INT,  # cNotifications : INT
    Fiddle::TYPE_VOIDP,  # lpNotifications : NOTIFICATION* in/out
    Fiddle::TYPE_VOIDP,  # lpcb : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mapi32")]
extern "system" {
    fn ScCountNotifications(
        cNotifications: i32,  // INT
        lpNotifications: *mut NOTIFICATION,  // NOTIFICATION* in/out
        lpcb: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MAPI32.dll")]
public static extern int ScCountNotifications(int cNotifications, IntPtr lpNotifications, ref uint lpcb);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MAPI32_ScCountNotifications' -Namespace Win32 -PassThru
# $api::ScCountNotifications(cNotifications, lpNotifications, lpcb)

#uselib "MAPI32.dll"
#func global ScCountNotifications "ScCountNotifications" sptr, sptr, sptr
; ScCountNotifications cNotifications, varptr(lpNotifications), varptr(lpcb)   ; 戻り値は stat
; cNotifications : INT -> "sptr"
; lpNotifications : NOTIFICATION* in/out -> "sptr"
; lpcb : 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。

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

var (
	mapi32 = windows.NewLazySystemDLL("MAPI32.dll")
	procScCountNotifications = mapi32.NewProc("ScCountNotifications")
)

// cNotifications (INT), lpNotifications (NOTIFICATION* in/out), lpcb (DWORD* in/out)
r1, _, err := procScCountNotifications.Call(
	uintptr(cNotifications),
	uintptr(lpNotifications),
	uintptr(lpcb),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function ScCountNotifications(
  cNotifications: Integer;   // INT
  lpNotifications: Pointer;   // NOTIFICATION* in/out
  lpcb: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'MAPI32.dll' name 'ScCountNotifications';

result := DllCall("MAPI32\ScCountNotifications"
    , "Int", cNotifications   ; INT
    , "Ptr", lpNotifications   ; NOTIFICATION* in/out
    , "Ptr", lpcb   ; DWORD* in/out
    , "Int")   ; return: INT

●ScCountNotifications(cNotifications, lpNotifications, lpcb) = DLL("MAPI32.dll", "int ScCountNotifications(int, void*, void*)")
# 呼び出し: ScCountNotifications(cNotifications, lpNotifications, lpcb)
# cNotifications : INT -> "int"
# lpNotifications : NOTIFICATION* in/out -> "void*"
# lpcb : 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)。

const std = @import("std");

extern "mapi32" fn ScCountNotifications(
    cNotifications: i32, // INT
    lpNotifications: [*c]NOTIFICATION, // NOTIFICATION* in/out
    lpcb: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) i32;

proc ScCountNotifications(
    cNotifications: int32,  # INT
    lpNotifications: ptr NOTIFICATION,  # NOTIFICATION* in/out
    lpcb: ptr uint32  # DWORD* in/out
): int32 {.importc: "ScCountNotifications", stdcall, dynlib: "MAPI32.dll".}

pragma(lib, "mapi32");
extern(Windows)
int ScCountNotifications(
    int cNotifications,   // INT
    NOTIFICATION* lpNotifications,   // NOTIFICATION* in/out
    uint* lpcb   // DWORD* in/out
);

ccall((:ScCountNotifications, "MAPI32.dll"), stdcall, Int32,
      (Int32, Ptr{NOTIFICATION}, Ptr{UInt32}),
      cNotifications, lpNotifications, lpcb)
# cNotifications : INT -> Int32
# lpNotifications : NOTIFICATION* in/out -> Ptr{NOTIFICATION}
# lpcb : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t ScCountNotifications(
    int32_t cNotifications,
    void* lpNotifications,
    uint32_t* lpcb);
]]
local mapi32 = ffi.load("mapi32")
-- mapi32.ScCountNotifications(cNotifications, lpNotifications, lpcb)
-- cNotifications : INT
-- lpNotifications : NOTIFICATION* in/out
-- lpcb : DWORD* in/out
-- 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('MAPI32.dll');
const ScCountNotifications = lib.func('__stdcall', 'ScCountNotifications', 'int32_t', ['int32_t', 'void *', 'uint32_t *']);
// ScCountNotifications(cNotifications, lpNotifications, lpcb)
// cNotifications : INT -> 'int32_t'
// lpNotifications : NOTIFICATION* in/out -> 'void *'
// lpcb : DWORD* in/out -> 'uint32_t *'
// 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("MAPI32.dll", {
  ScCountNotifications: { parameters: ["i32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.ScCountNotifications(cNotifications, lpNotifications, lpcb)
// cNotifications : INT -> "i32"
// lpNotifications : NOTIFICATION* in/out -> "pointer"
// lpcb : DWORD* in/out -> "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 ScCountNotifications(
    int32_t cNotifications,
    void* lpNotifications,
    uint32_t* lpcb);
C, "MAPI32.dll");
// $ffi->ScCountNotifications(cNotifications, lpNotifications, lpcb);
// cNotifications : INT
// lpNotifications : NOTIFICATION* in/out
// lpcb : DWORD* in/out
// 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 Mapi32 extends StdCallLibrary {
    Mapi32 INSTANCE = Native.load("mapi32", Mapi32.class);
    int ScCountNotifications(
        int cNotifications,   // INT
        Pointer lpNotifications,   // NOTIFICATION* in/out
        IntByReference lpcb   // DWORD* in/out
    );
}

@[Link("mapi32")]
lib LibMAPI32
  fun ScCountNotifications = ScCountNotifications(
    cNotifications : Int32,   # INT
    lpNotifications : NOTIFICATION*,   # NOTIFICATION* in/out
    lpcb : UInt32*   # DWORD* in/out
  ) : 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 ScCountNotificationsNative = Int32 Function(Int32, Pointer<Void>, Pointer<Uint32>);
typedef ScCountNotificationsDart = int Function(int, Pointer<Void>, Pointer<Uint32>);
final ScCountNotifications = DynamicLibrary.open('MAPI32.dll')
    .lookupFunction<ScCountNotificationsNative, ScCountNotificationsDart>('ScCountNotifications');
// cNotifications : INT -> Int32
// lpNotifications : NOTIFICATION* in/out -> Pointer<Void>
// lpcb : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function ScCountNotifications(
  cNotifications: Integer;   // INT
  lpNotifications: Pointer;   // NOTIFICATION* in/out
  lpcb: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'MAPI32.dll' name 'ScCountNotifications';

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

foreign import stdcall safe "ScCountNotifications"
  c_ScCountNotifications :: Int32 -> Ptr () -> Ptr Word32 -> IO Int32
-- cNotifications : INT -> Int32
-- lpNotifications : NOTIFICATION* in/out -> Ptr ()
-- lpcb : DWORD* in/out -> Ptr Word32
-- 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 sccountnotifications =
  foreign "ScCountNotifications"
    (int32_t @-> (ptr void) @-> (ptr uint32_t) @-> returning int32_t)
(* cNotifications : INT -> int32_t *)
(* lpNotifications : NOTIFICATION* in/out -> (ptr void) *)
(* lpcb : DWORD* in/out -> (ptr uint32_t) *)
(* 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 mapi32 (t "MAPI32.dll"))
(cffi:use-foreign-library mapi32)

(cffi:defcfun ("ScCountNotifications" sc-count-notifications :convention :stdcall) :int32
  (c-notifications :int32)   ; INT
  (lp-notifications :pointer)   ; NOTIFICATION* in/out
  (lpcb :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $ScCountNotifications = Win32::API::More->new('MAPI32',
    'int ScCountNotifications(int cNotifications, LPVOID lpNotifications, LPVOID lpcb)');
# my $ret = $ScCountNotifications->Call($cNotifications, $lpNotifications, $lpcb);
# cNotifications : INT -> int
# lpNotifications : NOTIFICATION* in/out -> LPVOID
# lpcb : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。