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GdipGetImageDimension

関数
イメージの幅と高さを浮動小数点値で取得する。
DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipGetImageDimension(
    GpImage* image,
    FLOAT* width,
    FLOAT* height
);

パラメーター

名前方向説明
imageGpImage*inout対象の画像オブジェクトへのポインタ。
widthFLOAT*inout画像の幅を受け取るFLOATポインタ。
heightFLOAT*inout画像の高さを受け取るFLOATポインタ。

戻り値の型: Status

各言語での呼び出し定義

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

Status GdipGetImageDimension(
    GpImage* image,
    FLOAT* width,
    FLOAT* height
);
[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipGetImageDimension(
    IntPtr image,   // GpImage* in/out
    ref float width,   // FLOAT* in/out
    ref float height   // FLOAT* in/out
);
<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipGetImageDimension(
    image As IntPtr,   ' GpImage* in/out
    ByRef width As Single,   ' FLOAT* in/out
    ByRef height As Single   ' FLOAT* in/out
) As Integer
End Function
' image : GpImage* in/out
' width : FLOAT* in/out
' height : FLOAT* in/out
Declare PtrSafe Function GdipGetImageDimension Lib "gdiplus" ( _
    ByVal image As LongPtr, _
    ByRef width As Single, _
    ByRef height As Single) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。
import ctypes
from ctypes import wintypes

GdipGetImageDimension = ctypes.windll.gdiplus.GdipGetImageDimension
GdipGetImageDimension.restype = ctypes.c_int
GdipGetImageDimension.argtypes = [
    ctypes.c_void_p,  # image : GpImage* in/out
    ctypes.POINTER(ctypes.c_float),  # width : FLOAT* in/out
    ctypes.POINTER(ctypes.c_float),  # height : FLOAT* in/out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipGetImageDimension = Fiddle::Function.new(
  lib['GdipGetImageDimension'],
  [
    Fiddle::TYPE_VOIDP,  # image : GpImage* in/out
    Fiddle::TYPE_VOIDP,  # width : FLOAT* in/out
    Fiddle::TYPE_VOIDP,  # height : FLOAT* in/out
  ],
  Fiddle::TYPE_INT)
#[link(name = "gdiplus")]
extern "system" {
    fn GdipGetImageDimension(
        image: *mut GpImage,  // GpImage* in/out
        width: *mut f32,  // FLOAT* in/out
        height: *mut f32  // FLOAT* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipGetImageDimension(IntPtr image, ref float width, ref float height);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipGetImageDimension' -Namespace Win32 -PassThru
# $api::GdipGetImageDimension(image, width, height)
#uselib "gdiplus.dll"
#func global GdipGetImageDimension "GdipGetImageDimension" sptr, sptr, sptr
; GdipGetImageDimension varptr(image), varptr(width), varptr(height)   ; 戻り値は stat
; image : GpImage* in/out -> "sptr"
; width : FLOAT* in/out -> "sptr"
; height : FLOAT* 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 GdipGetImageDimension "GdipGetImageDimension" var, var, var
; res = GdipGetImageDimension(image, width, height)
; image : GpImage* in/out -> "var"
; width : FLOAT* in/out -> "var"
; height : FLOAT* 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 GdipGetImageDimension(GpImage* image, FLOAT* width, FLOAT* height)
#uselib "gdiplus.dll"
#cfunc global GdipGetImageDimension "GdipGetImageDimension" var, var, var
; res = GdipGetImageDimension(image, width, height)
; image : GpImage* in/out -> "var"
; width : FLOAT* in/out -> "var"
; height : FLOAT* 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")
	procGdipGetImageDimension = gdiplus.NewProc("GdipGetImageDimension")
)

// image (GpImage* in/out), width (FLOAT* in/out), height (FLOAT* in/out)
r1, _, err := procGdipGetImageDimension.Call(
	uintptr(image),
	uintptr(width),
	uintptr(height),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status
function GdipGetImageDimension(
  image: Pointer;   // GpImage* in/out
  width: Pointer;   // FLOAT* in/out
  height: Pointer   // FLOAT* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetImageDimension';
result := DllCall("gdiplus\GdipGetImageDimension"
    , "Ptr", image   ; GpImage* in/out
    , "Ptr", width   ; FLOAT* in/out
    , "Ptr", height   ; FLOAT* in/out
    , "Int")   ; return: Status
●GdipGetImageDimension(image, width, height) = DLL("gdiplus.dll", "int GdipGetImageDimension(void*, void*, void*)")
# 呼び出し: GdipGetImageDimension(image, width, height)
# image : GpImage* in/out -> "void*"
# width : FLOAT* in/out -> "void*"
# height : FLOAT* 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 GdipGetImageDimension(
    image: [*c]GpImage, // GpImage* in/out
    width: [*c]f32, // FLOAT* in/out
    height: [*c]f32 // FLOAT* in/out
) callconv(std.os.windows.WINAPI) i32;
proc GdipGetImageDimension(
    image: ptr GpImage,  # GpImage* in/out
    width: ptr float32,  # FLOAT* in/out
    height: ptr float32  # FLOAT* in/out
): int32 {.importc: "GdipGetImageDimension", stdcall, dynlib: "gdiplus.dll".}
pragma(lib, "gdiplus");
extern(Windows)
int GdipGetImageDimension(
    GpImage* image,   // GpImage* in/out
    float* width,   // FLOAT* in/out
    float* height   // FLOAT* in/out
);
ccall((:GdipGetImageDimension, "gdiplus.dll"), stdcall, Int32,
      (Ptr{GpImage}, Ptr{Float32}, Ptr{Float32}),
      image, width, height)
# image : GpImage* in/out -> Ptr{GpImage}
# width : FLOAT* in/out -> Ptr{Float32}
# height : FLOAT* in/out -> Ptr{Float32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t GdipGetImageDimension(
    void* image,
    float* width,
    float* height);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipGetImageDimension(image, width, height)
-- image : GpImage* in/out
-- width : FLOAT* in/out
-- height : FLOAT* 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 GdipGetImageDimension = lib.func('__stdcall', 'GdipGetImageDimension', 'int32_t', ['void *', 'float *', 'float *']);
// GdipGetImageDimension(image, width, height)
// image : GpImage* in/out -> 'void *'
// width : FLOAT* in/out -> 'float *'
// height : FLOAT* in/out -> 'float *'
// 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", {
  GdipGetImageDimension: { parameters: ["pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.GdipGetImageDimension(image, width, height)
// image : GpImage* in/out -> "pointer"
// width : FLOAT* in/out -> "pointer"
// height : FLOAT* 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 GdipGetImageDimension(
    void* image,
    float* width,
    float* height);
C, "gdiplus.dll");
// $ffi->GdipGetImageDimension(image, width, height);
// image : GpImage* in/out
// width : FLOAT* in/out
// height : FLOAT* 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 GdipGetImageDimension(
        Pointer image,   // GpImage* in/out
        FloatByReference width,   // FLOAT* in/out
        FloatByReference height   // FLOAT* in/out
    );
}
@[Link("gdiplus")]
lib Libgdiplus
  fun GdipGetImageDimension = GdipGetImageDimension(
    image : GpImage*,   # GpImage* in/out
    width : Float32*,   # FLOAT* in/out
    height : Float32*   # FLOAT* 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 GdipGetImageDimensionNative = Int32 Function(Pointer<Void>, Pointer<Float>, Pointer<Float>);
typedef GdipGetImageDimensionDart = int Function(Pointer<Void>, Pointer<Float>, Pointer<Float>);
final GdipGetImageDimension = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipGetImageDimensionNative, GdipGetImageDimensionDart>('GdipGetImageDimension');
// image : GpImage* in/out -> Pointer<Void>
// width : FLOAT* in/out -> Pointer<Float>
// height : FLOAT* in/out -> Pointer<Float>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function GdipGetImageDimension(
  image: Pointer;   // GpImage* in/out
  width: Pointer;   // FLOAT* in/out
  height: Pointer   // FLOAT* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetImageDimension';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GdipGetImageDimension"
  c_GdipGetImageDimension :: Ptr () -> Ptr CFloat -> Ptr CFloat -> IO Int32
-- image : GpImage* in/out -> Ptr ()
-- width : FLOAT* in/out -> Ptr CFloat
-- height : FLOAT* in/out -> Ptr CFloat
-- 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 gdipgetimagedimension =
  foreign "GdipGetImageDimension"
    ((ptr void) @-> (ptr float) @-> (ptr float) @-> returning int32_t)
(* image : GpImage* in/out -> (ptr void) *)
(* width : FLOAT* in/out -> (ptr float) *)
(* height : FLOAT* in/out -> (ptr float) *)
(* 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 ("GdipGetImageDimension" gdip-get-image-dimension :convention :stdcall) :int32
  (image :pointer)   ; GpImage* in/out
  (width :pointer)   ; FLOAT* in/out
  (height :pointer))   ; FLOAT* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $GdipGetImageDimension = Win32::API::More->new('gdiplus',
    'int GdipGetImageDimension(LPVOID image, LPVOID width, LPVOID height)');
# my $ret = $GdipGetImageDimension->Call($image, $width, $height);
# image : GpImage* in/out -> LPVOID
# width : FLOAT* in/out -> LPVOID
# height : FLOAT* 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。

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