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GdipCreateStreamOnFile
関数指定したファイル上にIStreamストリームを作成する。
シグネチャ
// gdiplus.dll
#include <windows.h>
Status GdipCreateStreamOnFile(
LPCWSTR filename,
DWORD access,
IStream** stream
);パラメーター
| 名前 | 型 | 方向 | 説明 |
|---|---|---|---|
| filename | LPCWSTR | in | 対象ファイルのパスを示すワイド文字列(LPWSTR)。 |
| access | DWORD | in | ファイルアクセスモードを示すフラグ。読み取り/書き込みを指定する。 |
| stream | IStream** | out | 生成したIStreamを受け取るポインタのポインタ(出力)。不要時はReleaseする。 |
戻り値の型: Status
各言語での呼び出し定義
// gdiplus.dll
#include <windows.h>
Status GdipCreateStreamOnFile(
LPCWSTR filename,
DWORD access,
IStream** stream
);[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipCreateStreamOnFile(
[MarshalAs(UnmanagedType.LPWStr)] string filename, // LPCWSTR
uint access, // DWORD
IntPtr stream // IStream** out
);<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipCreateStreamOnFile(
<MarshalAs(UnmanagedType.LPWStr)> filename As String, ' LPCWSTR
access As UInteger, ' DWORD
stream As IntPtr ' IStream** out
) As Integer
End Function' filename : LPCWSTR
' access : DWORD
' stream : IStream** out
Declare PtrSafe Function GdipCreateStreamOnFile Lib "gdiplus" ( _
ByVal filename As LongPtr, _
ByVal access As Long, _
ByVal stream 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
GdipCreateStreamOnFile = ctypes.windll.gdiplus.GdipCreateStreamOnFile
GdipCreateStreamOnFile.restype = ctypes.c_int
GdipCreateStreamOnFile.argtypes = [
wintypes.LPCWSTR, # filename : LPCWSTR
wintypes.DWORD, # access : DWORD
ctypes.c_void_p, # stream : IStream** out
]require 'fiddle'
require 'fiddle/import'
lib = Fiddle.dlopen('gdiplus.dll')
GdipCreateStreamOnFile = Fiddle::Function.new(
lib['GdipCreateStreamOnFile'],
[
Fiddle::TYPE_VOIDP, # filename : LPCWSTR
-Fiddle::TYPE_INT, # access : DWORD
Fiddle::TYPE_VOIDP, # stream : IStream** out
],
Fiddle::TYPE_INT)#[link(name = "gdiplus")]
extern "system" {
fn GdipCreateStreamOnFile(
filename: *const u16, // LPCWSTR
access: u32, // DWORD
stream: *mut *mut core::ffi::c_void // IStream** out
) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipCreateStreamOnFile([MarshalAs(UnmanagedType.LPWStr)] string filename, uint access, IntPtr stream);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipCreateStreamOnFile' -Namespace Win32 -PassThru
# $api::GdipCreateStreamOnFile(filename, access, stream)#uselib "gdiplus.dll"
#func global GdipCreateStreamOnFile "GdipCreateStreamOnFile" sptr, sptr, sptr
; GdipCreateStreamOnFile filename, access, stream ; 戻り値は stat
; filename : LPCWSTR -> "sptr"
; access : DWORD -> "sptr"
; stream : IStream** 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。#uselib "gdiplus.dll"
#cfunc global GdipCreateStreamOnFile "GdipCreateStreamOnFile" wstr, int, sptr
; res = GdipCreateStreamOnFile(filename, access, stream)
; filename : LPCWSTR -> "wstr"
; access : DWORD -> "int"
; stream : IStream** out -> "sptr"; Status GdipCreateStreamOnFile(LPCWSTR filename, DWORD access, IStream** stream)
#uselib "gdiplus.dll"
#cfunc global GdipCreateStreamOnFile "GdipCreateStreamOnFile" wstr, int, intptr
; res = GdipCreateStreamOnFile(filename, access, stream)
; filename : LPCWSTR -> "wstr"
; access : DWORD -> "int"
; stream : IStream** out -> "intptr"import (
"golang.org/x/sys/windows"
"unsafe"
)
var (
gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
procGdipCreateStreamOnFile = gdiplus.NewProc("GdipCreateStreamOnFile")
)
// filename (LPCWSTR), access (DWORD), stream (IStream** out)
r1, _, err := procGdipCreateStreamOnFile.Call(
uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(filename))),
uintptr(access),
uintptr(stream),
)
_ = err // syscall.Errno (valid when the call sets last-error)
_ = r1 // Statusfunction GdipCreateStreamOnFile(
filename: PWideChar; // LPCWSTR
access: DWORD; // DWORD
stream: Pointer // IStream** out
): Integer; stdcall;
external 'gdiplus.dll' name 'GdipCreateStreamOnFile';result := DllCall("gdiplus\GdipCreateStreamOnFile"
, "WStr", filename ; LPCWSTR
, "UInt", access ; DWORD
, "Ptr", stream ; IStream** out
, "Int") ; return: Status●GdipCreateStreamOnFile(filename, access, stream) = DLL("gdiplus.dll", "int GdipCreateStreamOnFile(char*, dword, void*)")
# 呼び出し: GdipCreateStreamOnFile(filename, access, stream)
# filename : LPCWSTR -> "char*"
# access : DWORD -> "dword"
# stream : IStream** 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 "gdiplus" fn GdipCreateStreamOnFile(
filename: [*c]const u16, // LPCWSTR
access: u32, // DWORD
stream: ?*anyopaque // IStream** out
) callconv(std.os.windows.WINAPI) i32;proc GdipCreateStreamOnFile(
filename: WideCString, # LPCWSTR
access: uint32, # DWORD
stream: pointer # IStream** out
): int32 {.importc: "GdipCreateStreamOnFile", stdcall, dynlib: "gdiplus.dll".}pragma(lib, "gdiplus");
extern(Windows)
int GdipCreateStreamOnFile(
const(wchar)* filename, // LPCWSTR
uint access, // DWORD
void* stream // IStream** out
);ccall((:GdipCreateStreamOnFile, "gdiplus.dll"), stdcall, Int32,
(Cwstring, UInt32, Ptr{Cvoid}),
filename, access, stream)
# filename : LPCWSTR -> Cwstring
# access : DWORD -> UInt32
# stream : IStream** out -> 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 GdipCreateStreamOnFile(
const uint16_t* filename,
uint32_t access,
void* stream);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipCreateStreamOnFile(filename, access, stream)
-- filename : LPCWSTR
-- access : DWORD
-- stream : IStream** 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('gdiplus.dll');
const GdipCreateStreamOnFile = lib.func('__stdcall', 'GdipCreateStreamOnFile', 'int32_t', ['str16', 'uint32_t', 'void *']);
// GdipCreateStreamOnFile(filename, access, stream)
// filename : LPCWSTR -> 'str16'
// access : DWORD -> 'uint32_t'
// stream : IStream** out -> '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("gdiplus.dll", {
GdipCreateStreamOnFile: { parameters: ["buffer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.GdipCreateStreamOnFile(filename, access, stream)
// filename : LPCWSTR -> "buffer"
// access : DWORD -> "u32"
// stream : IStream** 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 GdipCreateStreamOnFile(
const uint16_t* filename,
uint32_t access,
void* stream);
C, "gdiplus.dll");
// $ffi->GdipCreateStreamOnFile(filename, access, stream);
// filename : LPCWSTR
// access : DWORD
// stream : IStream** out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;
public interface Gdiplus extends StdCallLibrary {
Gdiplus INSTANCE = Native.load("gdiplus", Gdiplus.class);
int GdipCreateStreamOnFile(
WString filename, // LPCWSTR
int access, // DWORD
Pointer stream // IStream** out
);
}@[Link("gdiplus")]
lib Libgdiplus
fun GdipCreateStreamOnFile = GdipCreateStreamOnFile(
filename : UInt16*, # LPCWSTR
access : UInt32, # DWORD
stream : Void* # IStream** out
) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。import 'dart:ffi';
import 'package:ffi/ffi.dart';
typedef GdipCreateStreamOnFileNative = Int32 Function(Pointer<Utf16>, Uint32, Pointer<Void>);
typedef GdipCreateStreamOnFileDart = int Function(Pointer<Utf16>, int, Pointer<Void>);
final GdipCreateStreamOnFile = DynamicLibrary.open('gdiplus.dll')
.lookupFunction<GdipCreateStreamOnFileNative, GdipCreateStreamOnFileDart>('GdipCreateStreamOnFile');
// filename : LPCWSTR -> Pointer<Utf16>
// access : DWORD -> Uint32
// stream : IStream** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。{$mode objfpc}{$H+}
function GdipCreateStreamOnFile(
filename: PWideChar; // LPCWSTR
access: DWORD; // DWORD
stream: Pointer // IStream** out
): Integer; stdcall;
external 'gdiplus.dll' name 'GdipCreateStreamOnFile';import Foreign
import Foreign.C.Types
import Foreign.C.String
foreign import stdcall safe "GdipCreateStreamOnFile"
c_GdipCreateStreamOnFile :: CWString -> Word32 -> Ptr () -> IO Int32
-- filename : LPCWSTR -> CWString
-- access : DWORD -> Word32
-- stream : IStream** out -> 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 gdipcreatestreamonfile =
foreign "GdipCreateStreamOnFile"
((ptr uint16_t) @-> uint32_t @-> (ptr void) @-> returning int32_t)
(* filename : LPCWSTR -> (ptr uint16_t) *)
(* access : DWORD -> uint32_t *)
(* stream : IStream** out -> (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 gdiplus (t "gdiplus.dll"))
(cffi:use-foreign-library gdiplus)
(cffi:defcfun ("GdipCreateStreamOnFile" gdip-create-stream-on-file :convention :stdcall) :int32
(filename (:string :encoding :utf-16le)) ; LPCWSTR
(access :uint32) ; DWORD
(stream :pointer)) ; IStream** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。use Win32::API;
my $GdipCreateStreamOnFile = Win32::API::More->new('gdiplus',
'int GdipCreateStreamOnFile(LPCWSTR filename, DWORD access, LPVOID stream)');
# my $ret = $GdipCreateStreamOnFile->Call($filename, $access, $stream);
# filename : LPCWSTR -> LPCWSTR
# access : DWORD -> DWORD
# stream : IStream** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。