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GdipCreateMetafileFromStream

関数
ストリームからメタファイルオブジェクトを作成する。
DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipCreateMetafileFromStream(
    IStream* stream,
    GpMetafile** metafile
);

パラメーター

名前方向説明
streamIStream*inメタファイルデータを保持するIStreamへのポインタ。
metafileGpMetafile**inout生成したメタファイルオブジェクトを受け取るポインタのポインタ(出力)。

戻り値の型: Status

各言語での呼び出し定義

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

Status GdipCreateMetafileFromStream(
    IStream* stream,
    GpMetafile** metafile
);
[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipCreateMetafileFromStream(
    IntPtr stream,   // IStream*
    IntPtr metafile   // GpMetafile** in/out
);
<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipCreateMetafileFromStream(
    stream As IntPtr,   ' IStream*
    metafile As IntPtr   ' GpMetafile** in/out
) As Integer
End Function
' stream : IStream*
' metafile : GpMetafile** in/out
Declare PtrSafe Function GdipCreateMetafileFromStream Lib "gdiplus" ( _
    ByVal stream As LongPtr, _
    ByVal metafile 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

GdipCreateMetafileFromStream = ctypes.windll.gdiplus.GdipCreateMetafileFromStream
GdipCreateMetafileFromStream.restype = ctypes.c_int
GdipCreateMetafileFromStream.argtypes = [
    ctypes.c_void_p,  # stream : IStream*
    ctypes.c_void_p,  # metafile : GpMetafile** in/out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipCreateMetafileFromStream = Fiddle::Function.new(
  lib['GdipCreateMetafileFromStream'],
  [
    Fiddle::TYPE_VOIDP,  # stream : IStream*
    Fiddle::TYPE_VOIDP,  # metafile : GpMetafile** in/out
  ],
  Fiddle::TYPE_INT)
#[link(name = "gdiplus")]
extern "system" {
    fn GdipCreateMetafileFromStream(
        stream: *mut core::ffi::c_void,  // IStream*
        metafile: *mut *mut GpMetafile  // GpMetafile** in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipCreateMetafileFromStream(IntPtr stream, IntPtr metafile);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipCreateMetafileFromStream' -Namespace Win32 -PassThru
# $api::GdipCreateMetafileFromStream(stream, metafile)
#uselib "gdiplus.dll"
#func global GdipCreateMetafileFromStream "GdipCreateMetafileFromStream" sptr, sptr
; GdipCreateMetafileFromStream stream, varptr(metafile)   ; 戻り値は stat
; stream : IStream* -> "sptr"
; metafile : GpMetafile** 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。
出力引数:
#uselib "gdiplus.dll"
#cfunc global GdipCreateMetafileFromStream "GdipCreateMetafileFromStream" sptr, var
; res = GdipCreateMetafileFromStream(stream, metafile)
; stream : IStream* -> "sptr"
; metafile : GpMetafile** in/out -> "var"
; ※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。
出力引数:
; Status GdipCreateMetafileFromStream(IStream* stream, GpMetafile** metafile)
#uselib "gdiplus.dll"
#cfunc global GdipCreateMetafileFromStream "GdipCreateMetafileFromStream" intptr, var
; res = GdipCreateMetafileFromStream(stream, metafile)
; stream : IStream* -> "intptr"
; metafile : GpMetafile** in/out -> "var"
; ※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 (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipCreateMetafileFromStream = gdiplus.NewProc("GdipCreateMetafileFromStream")
)

// stream (IStream*), metafile (GpMetafile** in/out)
r1, _, err := procGdipCreateMetafileFromStream.Call(
	uintptr(stream),
	uintptr(metafile),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status
function GdipCreateMetafileFromStream(
  stream: Pointer;   // IStream*
  metafile: Pointer   // GpMetafile** in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreateMetafileFromStream';
result := DllCall("gdiplus\GdipCreateMetafileFromStream"
    , "Ptr", stream   ; IStream*
    , "Ptr", metafile   ; GpMetafile** in/out
    , "Int")   ; return: Status
●GdipCreateMetafileFromStream(stream, metafile) = DLL("gdiplus.dll", "int GdipCreateMetafileFromStream(void*, void*)")
# 呼び出し: GdipCreateMetafileFromStream(stream, metafile)
# stream : IStream* -> "void*"
# metafile : GpMetafile** 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 "gdiplus" fn GdipCreateMetafileFromStream(
    stream: ?*anyopaque, // IStream*
    metafile: [*c][*c]GpMetafile // GpMetafile** in/out
) callconv(std.os.windows.WINAPI) i32;
proc GdipCreateMetafileFromStream(
    stream: pointer,  # IStream*
    metafile: ptr GpMetafile  # GpMetafile** in/out
): int32 {.importc: "GdipCreateMetafileFromStream", stdcall, dynlib: "gdiplus.dll".}
pragma(lib, "gdiplus");
extern(Windows)
int GdipCreateMetafileFromStream(
    void* stream,   // IStream*
    GpMetafile** metafile   // GpMetafile** in/out
);
ccall((:GdipCreateMetafileFromStream, "gdiplus.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{GpMetafile}),
      stream, metafile)
# stream : IStream* -> Ptr{Cvoid}
# metafile : GpMetafile** in/out -> Ptr{GpMetafile}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t GdipCreateMetafileFromStream(
    void* stream,
    void* metafile);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipCreateMetafileFromStream(stream, metafile)
-- stream : IStream*
-- metafile : GpMetafile** 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('gdiplus.dll');
const GdipCreateMetafileFromStream = lib.func('__stdcall', 'GdipCreateMetafileFromStream', 'int32_t', ['void *', 'void *']);
// GdipCreateMetafileFromStream(stream, metafile)
// stream : IStream* -> 'void *'
// metafile : GpMetafile** in/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", {
  GdipCreateMetafileFromStream: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.GdipCreateMetafileFromStream(stream, metafile)
// stream : IStream* -> "pointer"
// metafile : GpMetafile** 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 GdipCreateMetafileFromStream(
    void* stream,
    void* metafile);
C, "gdiplus.dll");
// $ffi->GdipCreateMetafileFromStream(stream, metafile);
// stream : IStream*
// metafile : GpMetafile** 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 Gdiplus extends StdCallLibrary {
    Gdiplus INSTANCE = Native.load("gdiplus", Gdiplus.class);
    int GdipCreateMetafileFromStream(
        Pointer stream,   // IStream*
        Pointer metafile   // GpMetafile** in/out
    );
}
@[Link("gdiplus")]
lib Libgdiplus
  fun GdipCreateMetafileFromStream = GdipCreateMetafileFromStream(
    stream : Void*,   # IStream*
    metafile : GpMetafile**   # GpMetafile** 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 GdipCreateMetafileFromStreamNative = Int32 Function(Pointer<Void>, Pointer<Void>);
typedef GdipCreateMetafileFromStreamDart = int Function(Pointer<Void>, Pointer<Void>);
final GdipCreateMetafileFromStream = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipCreateMetafileFromStreamNative, GdipCreateMetafileFromStreamDart>('GdipCreateMetafileFromStream');
// stream : IStream* -> Pointer<Void>
// metafile : GpMetafile** in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function GdipCreateMetafileFromStream(
  stream: Pointer;   // IStream*
  metafile: Pointer   // GpMetafile** in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreateMetafileFromStream';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GdipCreateMetafileFromStream"
  c_GdipCreateMetafileFromStream :: Ptr () -> Ptr () -> IO Int32
-- stream : IStream* -> Ptr ()
-- metafile : GpMetafile** in/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 gdipcreatemetafilefromstream =
  foreign "GdipCreateMetafileFromStream"
    ((ptr void) @-> (ptr void) @-> returning int32_t)
(* stream : IStream* -> (ptr void) *)
(* metafile : GpMetafile** in/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 ("GdipCreateMetafileFromStream" gdip-create-metafile-from-stream :convention :stdcall) :int32
  (stream :pointer)   ; IStream*
  (metafile :pointer))   ; GpMetafile** in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $GdipCreateMetafileFromStream = Win32::API::More->new('gdiplus',
    'int GdipCreateMetafileFromStream(LPVOID stream, LPVOID metafile)');
# my $ret = $GdipCreateMetafileFromStream->Call($stream, $metafile);
# stream : IStream* -> LPVOID
# metafile : GpMetafile** 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。

関連項目

使用する型