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GdipGetMetafileHeaderFromFile

関数

ファイルからメタファイルヘッダー情報を取得する。

DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipGetMetafileHeaderFromFile(
    LPCWSTR filename,
    MetafileHeader* header
);

パラメーター

名前	型	方向
filename	LPCWSTR	in
header	MetafileHeader*	inout

戻り値の型: Status

各言語での呼び出し定義

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

Status GdipGetMetafileHeaderFromFile(
    LPCWSTR filename,
    MetafileHeader* header
);

[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipGetMetafileHeaderFromFile(
    [MarshalAs(UnmanagedType.LPWStr)] string filename,   // LPCWSTR
    IntPtr header   // MetafileHeader* in/out
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipGetMetafileHeaderFromFile(
    <MarshalAs(UnmanagedType.LPWStr)> filename As String,   ' LPCWSTR
    header As IntPtr   ' MetafileHeader* in/out
) As Integer
End Function

' filename : LPCWSTR
' header : MetafileHeader* in/out
Declare PtrSafe Function GdipGetMetafileHeaderFromFile Lib "gdiplus" ( _
    ByVal filename As LongPtr, _
    ByVal header 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

GdipGetMetafileHeaderFromFile = ctypes.windll.gdiplus.GdipGetMetafileHeaderFromFile
GdipGetMetafileHeaderFromFile.restype = ctypes.c_int
GdipGetMetafileHeaderFromFile.argtypes = [
    wintypes.LPCWSTR,  # filename : LPCWSTR
    ctypes.c_void_p,  # header : MetafileHeader* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipGetMetafileHeaderFromFile = Fiddle::Function.new(
  lib['GdipGetMetafileHeaderFromFile'],
  [
    Fiddle::TYPE_VOIDP,  # filename : LPCWSTR
    Fiddle::TYPE_VOIDP,  # header : MetafileHeader* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipGetMetafileHeaderFromFile(
        filename: *const u16,  // LPCWSTR
        header: *mut MetafileHeader  // MetafileHeader* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipGetMetafileHeaderFromFile([MarshalAs(UnmanagedType.LPWStr)] string filename, IntPtr header);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipGetMetafileHeaderFromFile' -Namespace Win32 -PassThru
# $api::GdipGetMetafileHeaderFromFile(filename, header)

#uselib "gdiplus.dll"
#func global GdipGetMetafileHeaderFromFile "GdipGetMetafileHeaderFromFile" sptr, sptr
; GdipGetMetafileHeaderFromFile filename, varptr(header)   ; 戻り値は stat
; filename : LPCWSTR -> "sptr"
; header : MetafileHeader* 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 GdipGetMetafileHeaderFromFile "GdipGetMetafileHeaderFromFile" wstr, var
; res = GdipGetMetafileHeaderFromFile(filename, header)
; filename : LPCWSTR -> "wstr"
; header : MetafileHeader* 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。#uselib "gdiplus.dll"
#cfunc global GdipGetMetafileHeaderFromFile "GdipGetMetafileHeaderFromFile" wstr, sptr
; res = GdipGetMetafileHeaderFromFile(filename, varptr(header))
; filename : LPCWSTR -> "wstr"
; header : MetafileHeader* in/out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; Status GdipGetMetafileHeaderFromFile(LPCWSTR filename, MetafileHeader* header)
#uselib "gdiplus.dll"
#cfunc global GdipGetMetafileHeaderFromFile "GdipGetMetafileHeaderFromFile" wstr, var
; res = GdipGetMetafileHeaderFromFile(filename, header)
; filename : LPCWSTR -> "wstr"
; header : MetafileHeader* 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。; Status GdipGetMetafileHeaderFromFile(LPCWSTR filename, MetafileHeader* header)
#uselib "gdiplus.dll"
#cfunc global GdipGetMetafileHeaderFromFile "GdipGetMetafileHeaderFromFile" wstr, intptr
; res = GdipGetMetafileHeaderFromFile(filename, varptr(header))
; filename : LPCWSTR -> "wstr"
; header : MetafileHeader* in/out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipGetMetafileHeaderFromFile = gdiplus.NewProc("GdipGetMetafileHeaderFromFile")
)

// filename (LPCWSTR), header (MetafileHeader* in/out)
r1, _, err := procGdipGetMetafileHeaderFromFile.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(filename))),
	uintptr(header),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipGetMetafileHeaderFromFile(
  filename: PWideChar;   // LPCWSTR
  header: Pointer   // MetafileHeader* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetMetafileHeaderFromFile';

result := DllCall("gdiplus\GdipGetMetafileHeaderFromFile"
    , "WStr", filename   ; LPCWSTR
    , "Ptr", header   ; MetafileHeader* in/out
    , "Int")   ; return: Status

●GdipGetMetafileHeaderFromFile(filename, header) = DLL("gdiplus.dll", "int GdipGetMetafileHeaderFromFile(char*, void*)")
# 呼び出し: GdipGetMetafileHeaderFromFile(filename, header)
# filename : LPCWSTR -> "char*"
# header : MetafileHeader* 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)。