ホーム › Graphics.GdiPlus › GdipBitmapGetHistogram

GdipBitmapGetHistogram

関数

ビットマップの各チャンネルのヒストグラムデータを取得する。

DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipBitmapGetHistogram(
    GpBitmap* bitmap,
    HistogramFormat format,
    DWORD NumberOfEntries,
    DWORD* channel0,
    DWORD* channel1,
    DWORD* channel2,
    DWORD* channel3
);

パラメーター

名前	型	方向	説明
bitmap	GpBitmap*	inout	ヒストグラムを取得する対象のGpBitmapオブジェクトへのポインタ。
format	HistogramFormat	in	ヒストグラムのチャネル構成を示すHistogramFormat列挙値。
NumberOfEntries	DWORD	in	各チャネル配列の要素数。通常は256を指定する。
channel0	DWORD*	out	第1チャネルの度数を受け取るDWORD配列へのポインタ。
channel1	DWORD*	out	第2チャネルの度数を受け取るDWORD配列へのポインタ。未使用形式ではNULL可。
channel2	DWORD*	out	第3チャネルの度数を受け取るDWORD配列へのポインタ。未使用形式ではNULL可。
channel3	DWORD*	out	第4チャネル(アルファ等)の度数を受け取るDWORD配列へのポインタ。未使用ならNULL可。

戻り値の型: Status

各言語での呼び出し定義

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

Status GdipBitmapGetHistogram(
    GpBitmap* bitmap,
    HistogramFormat format,
    DWORD NumberOfEntries,
    DWORD* channel0,
    DWORD* channel1,
    DWORD* channel2,
    DWORD* channel3
);

[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipBitmapGetHistogram(
    IntPtr bitmap,   // GpBitmap* in/out
    int format,   // HistogramFormat
    uint NumberOfEntries,   // DWORD
    out uint channel0,   // DWORD* out
    out uint channel1,   // DWORD* out
    out uint channel2,   // DWORD* out
    out uint channel3   // DWORD* out
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipBitmapGetHistogram(
    bitmap As IntPtr,   ' GpBitmap* in/out
    format As Integer,   ' HistogramFormat
    NumberOfEntries As UInteger,   ' DWORD
    <Out> ByRef channel0 As UInteger,   ' DWORD* out
    <Out> ByRef channel1 As UInteger,   ' DWORD* out
    <Out> ByRef channel2 As UInteger,   ' DWORD* out
    <Out> ByRef channel3 As UInteger   ' DWORD* out
) As Integer
End Function

' bitmap : GpBitmap* in/out
' format : HistogramFormat
' NumberOfEntries : DWORD
' channel0 : DWORD* out
' channel1 : DWORD* out
' channel2 : DWORD* out
' channel3 : DWORD* out
Declare PtrSafe Function GdipBitmapGetHistogram Lib "gdiplus" ( _
    ByVal bitmap As LongPtr, _
    ByVal format As Long, _
    ByVal NumberOfEntries As Long, _
    ByRef channel0 As Long, _
    ByRef channel1 As Long, _
    ByRef channel2 As Long, _
    ByRef channel3 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

GdipBitmapGetHistogram = ctypes.windll.gdiplus.GdipBitmapGetHistogram
GdipBitmapGetHistogram.restype = ctypes.c_int
GdipBitmapGetHistogram.argtypes = [
    ctypes.c_void_p,  # bitmap : GpBitmap* in/out
    ctypes.c_int,  # format : HistogramFormat
    wintypes.DWORD,  # NumberOfEntries : DWORD
    ctypes.POINTER(wintypes.DWORD),  # channel0 : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # channel1 : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # channel2 : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # channel3 : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipBitmapGetHistogram = Fiddle::Function.new(
  lib['GdipBitmapGetHistogram'],
  [
    Fiddle::TYPE_VOIDP,  # bitmap : GpBitmap* in/out
    Fiddle::TYPE_INT,  # format : HistogramFormat
    -Fiddle::TYPE_INT,  # NumberOfEntries : DWORD
    Fiddle::TYPE_VOIDP,  # channel0 : DWORD* out
    Fiddle::TYPE_VOIDP,  # channel1 : DWORD* out
    Fiddle::TYPE_VOIDP,  # channel2 : DWORD* out
    Fiddle::TYPE_VOIDP,  # channel3 : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipBitmapGetHistogram(
        bitmap: *mut GpBitmap,  // GpBitmap* in/out
        format: i32,  // HistogramFormat
        NumberOfEntries: u32,  // DWORD
        channel0: *mut u32,  // DWORD* out
        channel1: *mut u32,  // DWORD* out
        channel2: *mut u32,  // DWORD* out
        channel3: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipBitmapGetHistogram(IntPtr bitmap, int format, uint NumberOfEntries, out uint channel0, out uint channel1, out uint channel2, out uint channel3);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipBitmapGetHistogram' -Namespace Win32 -PassThru
# $api::GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)

#uselib "gdiplus.dll"
#func global GdipBitmapGetHistogram "GdipBitmapGetHistogram" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; GdipBitmapGetHistogram varptr(bitmap), format, NumberOfEntries, varptr(channel0), varptr(channel1), varptr(channel2), varptr(channel3)   ; 戻り値は stat
; bitmap : GpBitmap* in/out -> "sptr"
; format : HistogramFormat -> "sptr"
; NumberOfEntries : DWORD -> "sptr"
; channel0 : DWORD* out -> "sptr"
; channel1 : DWORD* out -> "sptr"
; channel2 : DWORD* out -> "sptr"
; channel3 : DWORD* 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 GdipBitmapGetHistogram "GdipBitmapGetHistogram" var, int, int, var, var, var, var
; res = GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
; bitmap : GpBitmap* in/out -> "var"
; format : HistogramFormat -> "int"
; NumberOfEntries : DWORD -> "int"
; channel0 : DWORD* out -> "var"
; channel1 : DWORD* out -> "var"
; channel2 : DWORD* out -> "var"
; channel3 : DWORD* 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 GdipBitmapGetHistogram "GdipBitmapGetHistogram" sptr, int, int, sptr, sptr, sptr, sptr
; res = GdipBitmapGetHistogram(varptr(bitmap), format, NumberOfEntries, varptr(channel0), varptr(channel1), varptr(channel2), varptr(channel3))
; bitmap : GpBitmap* in/out -> "sptr"
; format : HistogramFormat -> "int"
; NumberOfEntries : DWORD -> "int"
; channel0 : DWORD* out -> "sptr"
; channel1 : DWORD* out -> "sptr"
; channel2 : DWORD* out -> "sptr"
; channel3 : DWORD* 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 GdipBitmapGetHistogram(GpBitmap* bitmap, HistogramFormat format, DWORD NumberOfEntries, DWORD* channel0, DWORD* channel1, DWORD* channel2, DWORD* channel3)
#uselib "gdiplus.dll"
#cfunc global GdipBitmapGetHistogram "GdipBitmapGetHistogram" var, int, int, var, var, var, var
; res = GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
; bitmap : GpBitmap* in/out -> "var"
; format : HistogramFormat -> "int"
; NumberOfEntries : DWORD -> "int"
; channel0 : DWORD* out -> "var"
; channel1 : DWORD* out -> "var"
; channel2 : DWORD* out -> "var"
; channel3 : DWORD* 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 GdipBitmapGetHistogram(GpBitmap* bitmap, HistogramFormat format, DWORD NumberOfEntries, DWORD* channel0, DWORD* channel1, DWORD* channel2, DWORD* channel3)
#uselib "gdiplus.dll"
#cfunc global GdipBitmapGetHistogram "GdipBitmapGetHistogram" intptr, int, int, intptr, intptr, intptr, intptr
; res = GdipBitmapGetHistogram(varptr(bitmap), format, NumberOfEntries, varptr(channel0), varptr(channel1), varptr(channel2), varptr(channel3))
; bitmap : GpBitmap* in/out -> "intptr"
; format : HistogramFormat -> "int"
; NumberOfEntries : DWORD -> "int"
; channel0 : DWORD* out -> "intptr"
; channel1 : DWORD* out -> "intptr"
; channel2 : DWORD* out -> "intptr"
; channel3 : DWORD* 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")
	procGdipBitmapGetHistogram = gdiplus.NewProc("GdipBitmapGetHistogram")
)

// bitmap (GpBitmap* in/out), format (HistogramFormat), NumberOfEntries (DWORD), channel0 (DWORD* out), channel1 (DWORD* out), channel2 (DWORD* out), channel3 (DWORD* out)
r1, _, err := procGdipBitmapGetHistogram.Call(
	uintptr(bitmap),
	uintptr(format),
	uintptr(NumberOfEntries),
	uintptr(channel0),
	uintptr(channel1),
	uintptr(channel2),
	uintptr(channel3),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipBitmapGetHistogram(
  bitmap: Pointer;   // GpBitmap* in/out
  format: Integer;   // HistogramFormat
  NumberOfEntries: DWORD;   // DWORD
  channel0: Pointer;   // DWORD* out
  channel1: Pointer;   // DWORD* out
  channel2: Pointer;   // DWORD* out
  channel3: Pointer   // DWORD* out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipBitmapGetHistogram';

result := DllCall("gdiplus\GdipBitmapGetHistogram"
    , "Ptr", bitmap   ; GpBitmap* in/out
    , "Int", format   ; HistogramFormat
    , "UInt", NumberOfEntries   ; DWORD
    , "Ptr", channel0   ; DWORD* out
    , "Ptr", channel1   ; DWORD* out
    , "Ptr", channel2   ; DWORD* out
    , "Ptr", channel3   ; DWORD* out
    , "Int")   ; return: Status

●GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3) = DLL("gdiplus.dll", "int GdipBitmapGetHistogram(void*, int, dword, void*, void*, void*, void*)")
# 呼び出し: GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
# bitmap : GpBitmap* in/out -> "void*"
# format : HistogramFormat -> "int"
# NumberOfEntries : DWORD -> "dword"
# channel0 : DWORD* out -> "void*"
# channel1 : DWORD* out -> "void*"
# channel2 : DWORD* out -> "void*"
# channel3 : DWORD* 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 GdipBitmapGetHistogram(
    bitmap: [*c]GpBitmap, // GpBitmap* in/out
    format: i32, // HistogramFormat
    NumberOfEntries: u32, // DWORD
    channel0: [*c]u32, // DWORD* out
    channel1: [*c]u32, // DWORD* out
    channel2: [*c]u32, // DWORD* out
    channel3: [*c]u32 // DWORD* out
) callconv(std.os.windows.WINAPI) i32;

proc GdipBitmapGetHistogram(
    bitmap: ptr GpBitmap,  # GpBitmap* in/out
    format: int32,  # HistogramFormat
    NumberOfEntries: uint32,  # DWORD
    channel0: ptr uint32,  # DWORD* out
    channel1: ptr uint32,  # DWORD* out
    channel2: ptr uint32,  # DWORD* out
    channel3: ptr uint32  # DWORD* out
): int32 {.importc: "GdipBitmapGetHistogram", stdcall, dynlib: "gdiplus.dll".}

pragma(lib, "gdiplus");
extern(Windows)
int GdipBitmapGetHistogram(
    GpBitmap* bitmap,   // GpBitmap* in/out
    int format,   // HistogramFormat
    uint NumberOfEntries,   // DWORD
    uint* channel0,   // DWORD* out
    uint* channel1,   // DWORD* out
    uint* channel2,   // DWORD* out
    uint* channel3   // DWORD* out
);

ccall((:GdipBitmapGetHistogram, "gdiplus.dll"), stdcall, Int32,
      (Ptr{GpBitmap}, Int32, UInt32, Ptr{UInt32}, Ptr{UInt32}, Ptr{UInt32}, Ptr{UInt32}),
      bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
# bitmap : GpBitmap* in/out -> Ptr{GpBitmap}
# format : HistogramFormat -> Int32
# NumberOfEntries : DWORD -> UInt32
# channel0 : DWORD* out -> Ptr{UInt32}
# channel1 : DWORD* out -> Ptr{UInt32}
# channel2 : DWORD* out -> Ptr{UInt32}
# channel3 : DWORD* out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GdipBitmapGetHistogram(
    void* bitmap,
    int32_t format,
    uint32_t NumberOfEntries,
    uint32_t* channel0,
    uint32_t* channel1,
    uint32_t* channel2,
    uint32_t* channel3);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
-- bitmap : GpBitmap* in/out
-- format : HistogramFormat
-- NumberOfEntries : DWORD
-- channel0 : DWORD* out
-- channel1 : DWORD* out
-- channel2 : DWORD* out
-- channel3 : DWORD* 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 GdipBitmapGetHistogram = lib.func('__stdcall', 'GdipBitmapGetHistogram', 'int32_t', ['void *', 'int32_t', 'uint32_t', 'uint32_t *', 'uint32_t *', 'uint32_t *', 'uint32_t *']);
// GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
// bitmap : GpBitmap* in/out -> 'void *'
// format : HistogramFormat -> 'int32_t'
// NumberOfEntries : DWORD -> 'uint32_t'
// channel0 : DWORD* out -> 'uint32_t *'
// channel1 : DWORD* out -> 'uint32_t *'
// channel2 : DWORD* out -> 'uint32_t *'
// channel3 : DWORD* out -> '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("gdiplus.dll", {
  GdipBitmapGetHistogram: { parameters: ["pointer", "i32", "u32", "pointer", "pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
// bitmap : GpBitmap* in/out -> "pointer"
// format : HistogramFormat -> "i32"
// NumberOfEntries : DWORD -> "u32"
// channel0 : DWORD* out -> "pointer"
// channel1 : DWORD* out -> "pointer"
// channel2 : DWORD* out -> "pointer"
// channel3 : DWORD* 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 GdipBitmapGetHistogram(
    void* bitmap,
    int32_t format,
    uint32_t NumberOfEntries,
    uint32_t* channel0,
    uint32_t* channel1,
    uint32_t* channel2,
    uint32_t* channel3);
C, "gdiplus.dll");
// $ffi->GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3);
// bitmap : GpBitmap* in/out
// format : HistogramFormat
// NumberOfEntries : DWORD
// channel0 : DWORD* out
// channel1 : DWORD* out
// channel2 : DWORD* out
// channel3 : DWORD* 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 GdipBitmapGetHistogram(
        Pointer bitmap,   // GpBitmap* in/out
        int format,   // HistogramFormat
        int NumberOfEntries,   // DWORD
        IntByReference channel0,   // DWORD* out
        IntByReference channel1,   // DWORD* out
        IntByReference channel2,   // DWORD* out
        IntByReference channel3   // DWORD* out
    );
}

@[Link("gdiplus")]
lib Libgdiplus
  fun GdipBitmapGetHistogram = GdipBitmapGetHistogram(
    bitmap : GpBitmap*,   # GpBitmap* in/out
    format : Int32,   # HistogramFormat
    NumberOfEntries : UInt32,   # DWORD
    channel0 : UInt32*,   # DWORD* out
    channel1 : UInt32*,   # DWORD* out
    channel2 : UInt32*,   # DWORD* out
    channel3 : UInt32*   # DWORD* 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 GdipBitmapGetHistogramNative = Int32 Function(Pointer<Void>, Int32, Uint32, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint32>);
typedef GdipBitmapGetHistogramDart = int Function(Pointer<Void>, int, int, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint32>);
final GdipBitmapGetHistogram = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipBitmapGetHistogramNative, GdipBitmapGetHistogramDart>('GdipBitmapGetHistogram');
// bitmap : GpBitmap* in/out -> Pointer<Void>
// format : HistogramFormat -> Int32
// NumberOfEntries : DWORD -> Uint32
// channel0 : DWORD* out -> Pointer<Uint32>
// channel1 : DWORD* out -> Pointer<Uint32>
// channel2 : DWORD* out -> Pointer<Uint32>
// channel3 : DWORD* out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GdipBitmapGetHistogram(
  bitmap: Pointer;   // GpBitmap* in/out
  format: Integer;   // HistogramFormat
  NumberOfEntries: DWORD;   // DWORD
  channel0: Pointer;   // DWORD* out
  channel1: Pointer;   // DWORD* out
  channel2: Pointer;   // DWORD* out
  channel3: Pointer   // DWORD* out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipBitmapGetHistogram';

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

foreign import stdcall safe "GdipBitmapGetHistogram"
  c_GdipBitmapGetHistogram :: Ptr () -> Int32 -> Word32 -> Ptr Word32 -> Ptr Word32 -> Ptr Word32 -> Ptr Word32 -> IO Int32
-- bitmap : GpBitmap* in/out -> Ptr ()
-- format : HistogramFormat -> Int32
-- NumberOfEntries : DWORD -> Word32
-- channel0 : DWORD* out -> Ptr Word32
-- channel1 : DWORD* out -> Ptr Word32
-- channel2 : DWORD* out -> Ptr Word32
-- channel3 : DWORD* out -> Ptr 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 gdipbitmapgethistogram =
  foreign "GdipBitmapGetHistogram"
    ((ptr void) @-> int32_t @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint32_t) @-> (ptr uint32_t) @-> (ptr uint32_t) @-> returning int32_t)
(* bitmap : GpBitmap* in/out -> (ptr void) *)
(* format : HistogramFormat -> int32_t *)
(* NumberOfEntries : DWORD -> uint32_t *)
(* channel0 : DWORD* out -> (ptr uint32_t) *)
(* channel1 : DWORD* out -> (ptr uint32_t) *)
(* channel2 : DWORD* out -> (ptr uint32_t) *)
(* channel3 : DWORD* out -> (ptr 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 gdiplus (t "gdiplus.dll"))
(cffi:use-foreign-library gdiplus)

(cffi:defcfun ("GdipBitmapGetHistogram" gdip-bitmap-get-histogram :convention :stdcall) :int32
  (bitmap :pointer)   ; GpBitmap* in/out
  (format :int32)   ; HistogramFormat
  (number-of-entries :uint32)   ; DWORD
  (channel0 :pointer)   ; DWORD* out
  (channel1 :pointer)   ; DWORD* out
  (channel2 :pointer)   ; DWORD* out
  (channel3 :pointer))   ; DWORD* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GdipBitmapGetHistogram = Win32::API::More->new('gdiplus',
    'int GdipBitmapGetHistogram(LPVOID bitmap, int format, DWORD NumberOfEntries, LPVOID channel0, LPVOID channel1, LPVOID channel2, LPVOID channel3)');
# my $ret = $GdipBitmapGetHistogram->Call($bitmap, $format, $NumberOfEntries, $channel0, $channel1, $channel2, $channel3);
# bitmap : GpBitmap* in/out -> LPVOID
# format : HistogramFormat -> int
# NumberOfEntries : DWORD -> DWORD
# channel0 : DWORD* out -> LPVOID
# channel1 : DWORD* out -> LPVOID
# channel2 : DWORD* out -> LPVOID
# channel3 : DWORD* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

GdipBitmapGetHistogram

シグネチャ

パラメーター

各言語での呼び出し定義

関連項目