IStream_Read

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

HRESULT IStream_Read(
    IStream* pstm,
    void* pv,
    DWORD cb
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function IStream_Read(
    pstm As IntPtr,   ' IStream*
    pv As IntPtr,   ' void* out
    cb As UInteger   ' DWORD
) As Integer
End Function

' pstm : IStream*
' pv : void* out
' cb : DWORD
Declare PtrSafe Function IStream_Read Lib "shlwapi" ( _
    ByVal pstm As LongPtr, _
    ByVal pv As LongPtr, _
    ByVal cb 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

IStream_Read = ctypes.windll.shlwapi.IStream_Read
IStream_Read.restype = ctypes.c_int
IStream_Read.argtypes = [
    ctypes.c_void_p,  # pstm : IStream*
    ctypes.POINTER(None),  # pv : void* out
    wintypes.DWORD,  # cb : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
IStream_Read = Fiddle::Function.new(
  lib['IStream_Read'],
  [
    Fiddle::TYPE_VOIDP,  # pstm : IStream*
    Fiddle::TYPE_VOIDP,  # pv : void* out
    -Fiddle::TYPE_INT,  # cb : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn IStream_Read(
        pstm: *mut core::ffi::c_void,  // IStream*
        pv: *mut (),  // void* out
        cb: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int IStream_Read(IntPtr pstm, IntPtr pv, uint cb);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_IStream_Read' -Namespace Win32 -PassThru
# $api::IStream_Read(pstm, pv, cb)

#uselib "SHLWAPI.dll"
#func global IStream_Read "IStream_Read" sptr, sptr, sptr
; IStream_Read pstm, pv, cb   ; 戻り値は stat
; pstm : IStream* -> "sptr"
; pv : void* out -> "sptr"
; cb : 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 "SHLWAPI.dll"
#cfunc global IStream_Read "IStream_Read" sptr, sptr, int
; res = IStream_Read(pstm, pv, cb)
; pstm : IStream* -> "sptr"
; pv : void* out -> "sptr"
; cb : DWORD -> "int"

; HRESULT IStream_Read(IStream* pstm, void* pv, DWORD cb)
#uselib "SHLWAPI.dll"
#cfunc global IStream_Read "IStream_Read" intptr, intptr, int
; res = IStream_Read(pstm, pv, cb)
; pstm : IStream* -> "intptr"
; pv : void* out -> "intptr"
; cb : DWORD -> "int"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procIStream_Read = shlwapi.NewProc("IStream_Read")
)

// pstm (IStream*), pv (void* out), cb (DWORD)
r1, _, err := procIStream_Read.Call(
	uintptr(pstm),
	uintptr(pv),
	uintptr(cb),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function IStream_Read(
  pstm: Pointer;   // IStream*
  pv: Pointer;   // void* out
  cb: DWORD   // DWORD
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'IStream_Read';

result := DllCall("SHLWAPI\IStream_Read"
    , "Ptr", pstm   ; IStream*
    , "Ptr", pv   ; void* out
    , "UInt", cb   ; DWORD
    , "Int")   ; return: HRESULT

●IStream_Read(pstm, pv, cb) = DLL("SHLWAPI.dll", "int IStream_Read(void*, void*, dword)")
# 呼び出し: IStream_Read(pstm, pv, cb)
# pstm : IStream* -> "void*"
# pv : void* out -> "void*"
# cb : 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)。

const std = @import("std");

extern "shlwapi" fn IStream_Read(
    pstm: ?*anyopaque, // IStream*
    pv: ?*anyopaque, // void* out
    cb: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc IStream_Read(
    pstm: pointer,  # IStream*
    pv: pointer,  # void* out
    cb: uint32  # DWORD
): int32 {.importc: "IStream_Read", stdcall, dynlib: "SHLWAPI.dll".}

pragma(lib, "shlwapi");
extern(Windows)
int IStream_Read(
    void* pstm,   // IStream*
    void* pv,   // void* out
    uint cb   // DWORD
);

ccall((:IStream_Read, "SHLWAPI.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{Cvoid}, UInt32),
      pstm, pv, cb)
# pstm : IStream* -> Ptr{Cvoid}
# pv : void* out -> Ptr{Cvoid}
# cb : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t IStream_Read(
    void* pstm,
    void* pv,
    uint32_t cb);
]]
local shlwapi = ffi.load("shlwapi")
-- shlwapi.IStream_Read(pstm, pv, cb)
-- pstm : IStream*
-- pv : void* out
-- cb : DWORD
-- 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('SHLWAPI.dll');
const IStream_Read = lib.func('__stdcall', 'IStream_Read', 'int32_t', ['void *', 'void *', 'uint32_t']);
// IStream_Read(pstm, pv, cb)
// pstm : IStream* -> 'void *'
// pv : void* out -> 'void *'
// cb : DWORD -> '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("SHLWAPI.dll", {
  IStream_Read: { parameters: ["pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.IStream_Read(pstm, pv, cb)
// pstm : IStream* -> "pointer"
// pv : void* out -> "pointer"
// cb : DWORD -> "u32"
// 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 IStream_Read(
    void* pstm,
    void* pv,
    uint32_t cb);
C, "SHLWAPI.dll");
// $ffi->IStream_Read(pstm, pv, cb);
// pstm : IStream*
// pv : void* out
// cb : DWORD
// 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 Shlwapi extends StdCallLibrary {
    Shlwapi INSTANCE = Native.load("shlwapi", Shlwapi.class);
    int IStream_Read(
        Pointer pstm,   // IStream*
        Pointer pv,   // void* out
        int cb   // DWORD
    );
}

@[Link("shlwapi")]
lib LibSHLWAPI
  fun IStream_Read = IStream_Read(
    pstm : Void*,   # IStream*
    pv : Void*,   # void* out
    cb : UInt32   # DWORD
  ) : 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 IStream_ReadNative = Int32 Function(Pointer<Void>, Pointer<Void>, Uint32);
typedef IStream_ReadDart = int Function(Pointer<Void>, Pointer<Void>, int);
final IStream_Read = DynamicLibrary.open('SHLWAPI.dll')
    .lookupFunction<IStream_ReadNative, IStream_ReadDart>('IStream_Read');
// pstm : IStream* -> Pointer<Void>
// pv : void* out -> Pointer<Void>
// cb : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function IStream_Read(
  pstm: Pointer;   // IStream*
  pv: Pointer;   // void* out
  cb: DWORD   // DWORD
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'IStream_Read';

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

foreign import stdcall safe "IStream_Read"
  c_IStream_Read :: Ptr () -> Ptr () -> Word32 -> IO Int32
-- pstm : IStream* -> Ptr ()
-- pv : void* out -> Ptr ()
-- cb : DWORD -> 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 istream_read =
  foreign "IStream_Read"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* pstm : IStream* -> (ptr void) *)
(* pv : void* out -> (ptr void) *)
(* cb : DWORD -> 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 shlwapi (t "SHLWAPI.dll"))
(cffi:use-foreign-library shlwapi)

(cffi:defcfun ("IStream_Read" istream-read :convention :stdcall) :int32
  (pstm :pointer)   ; IStream*
  (pv :pointer)   ; void* out
  (cb :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $IStream_Read = Win32::API::More->new('SHLWAPI',
    'int IStream_Read(LPVOID pstm, LPVOID pv, DWORD cb)');
# my $ret = $IStream_Read->Call($pstm, $pv, $cb);
# pstm : IStream* -> LPVOID
# pv : void* out -> LPVOID
# cb : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。