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GdipCreateLineBrush

関数
2点間の線形グラデーションブラシを作成する。
DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipCreateLineBrush(
    const PointF* point1,
    const PointF* point2,
    DWORD color1,
    DWORD color2,
    WrapMode wrapMode,
    GpLineGradient** lineGradient
);

パラメーター

名前型方向説明
point1PointF*inグラデーション開始点(浮動小数)へのポインタ。
point2PointF*inグラデーション終了点(浮動小数)へのポインタ。
color1DWORDin開始点の色をARGB形式で指定する32ビット値。
color2DWORDin終了点の色をARGB形式で指定する32ビット値。
wrapModeWrapModeinブラシ範囲外での繰り返し方法を指定する列挙値。
lineGradientGpLineGradient**inout生成された線形グラデーションブラシを受け取るポインタのアドレス。

戻り値の型: Status

各言語での呼び出し定義

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

Status GdipCreateLineBrush(
    const PointF* point1,
    const PointF* point2,
    DWORD color1,
    DWORD color2,
    WrapMode wrapMode,
    GpLineGradient** lineGradient
);
[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipCreateLineBrush(
    IntPtr point1,   // PointF*
    IntPtr point2,   // PointF*
    uint color1,   // DWORD
    uint color2,   // DWORD
    int wrapMode,   // WrapMode
    IntPtr lineGradient   // GpLineGradient** in/out
);
<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipCreateLineBrush(
    point1 As IntPtr,   ' PointF*
    point2 As IntPtr,   ' PointF*
    color1 As UInteger,   ' DWORD
    color2 As UInteger,   ' DWORD
    wrapMode As Integer,   ' WrapMode
    lineGradient As IntPtr   ' GpLineGradient** in/out
) As Integer
End Function
' point1 : PointF*
' point2 : PointF*
' color1 : DWORD
' color2 : DWORD
' wrapMode : WrapMode
' lineGradient : GpLineGradient** in/out
Declare PtrSafe Function GdipCreateLineBrush Lib "gdiplus" ( _
    ByVal point1 As LongPtr, _
    ByVal point2 As LongPtr, _
    ByVal color1 As Long, _
    ByVal color2 As Long, _
    ByVal wrapMode As Long, _
    ByVal lineGradient 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

GdipCreateLineBrush = ctypes.windll.gdiplus.GdipCreateLineBrush
GdipCreateLineBrush.restype = ctypes.c_int
GdipCreateLineBrush.argtypes = [
    ctypes.c_void_p,  # point1 : PointF*
    ctypes.c_void_p,  # point2 : PointF*
    wintypes.DWORD,  # color1 : DWORD
    wintypes.DWORD,  # color2 : DWORD
    ctypes.c_int,  # wrapMode : WrapMode
    ctypes.c_void_p,  # lineGradient : GpLineGradient** in/out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipCreateLineBrush = Fiddle::Function.new(
  lib['GdipCreateLineBrush'],
  [
    Fiddle::TYPE_VOIDP,  # point1 : PointF*
    Fiddle::TYPE_VOIDP,  # point2 : PointF*
    -Fiddle::TYPE_INT,  # color1 : DWORD
    -Fiddle::TYPE_INT,  # color2 : DWORD
    Fiddle::TYPE_INT,  # wrapMode : WrapMode
    Fiddle::TYPE_VOIDP,  # lineGradient : GpLineGradient** in/out
  ],
  Fiddle::TYPE_INT)
#[link(name = "gdiplus")]
extern "system" {
    fn GdipCreateLineBrush(
        point1: *const PointF,  // PointF*
        point2: *const PointF,  // PointF*
        color1: u32,  // DWORD
        color2: u32,  // DWORD
        wrapMode: i32,  // WrapMode
        lineGradient: *mut *mut GpLineGradient  // GpLineGradient** in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipCreateLineBrush(IntPtr point1, IntPtr point2, uint color1, uint color2, int wrapMode, IntPtr lineGradient);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipCreateLineBrush' -Namespace Win32 -PassThru
# $api::GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient)
#uselib "gdiplus.dll"
#func global GdipCreateLineBrush "GdipCreateLineBrush" sptr, sptr, sptr, sptr, sptr, sptr
; GdipCreateLineBrush varptr(point1), varptr(point2), color1, color2, wrapMode, varptr(lineGradient)   ; 戻り値は stat
; point1 : PointF* -> "sptr"
; point2 : PointF* -> "sptr"
; color1 : DWORD -> "sptr"
; color2 : DWORD -> "sptr"
; wrapMode : WrapMode -> "sptr"
; lineGradient : GpLineGradient** 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 GdipCreateLineBrush "GdipCreateLineBrush" var, var, int, int, int, var
; res = GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient)
; point1 : PointF* -> "var"
; point2 : PointF* -> "var"
; color1 : DWORD -> "int"
; color2 : DWORD -> "int"
; wrapMode : WrapMode -> "int"
; lineGradient : GpLineGradient** 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 GdipCreateLineBrush(PointF* point1, PointF* point2, DWORD color1, DWORD color2, WrapMode wrapMode, GpLineGradient** lineGradient)
#uselib "gdiplus.dll"
#cfunc global GdipCreateLineBrush "GdipCreateLineBrush" var, var, int, int, int, var
; res = GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient)
; point1 : PointF* -> "var"
; point2 : PointF* -> "var"
; color1 : DWORD -> "int"
; color2 : DWORD -> "int"
; wrapMode : WrapMode -> "int"
; lineGradient : GpLineGradient** 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")
	procGdipCreateLineBrush = gdiplus.NewProc("GdipCreateLineBrush")
)

// point1 (PointF*), point2 (PointF*), color1 (DWORD), color2 (DWORD), wrapMode (WrapMode), lineGradient (GpLineGradient** in/out)
r1, _, err := procGdipCreateLineBrush.Call(
	uintptr(point1),
	uintptr(point2),
	uintptr(color1),
	uintptr(color2),
	uintptr(wrapMode),
	uintptr(lineGradient),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status
function GdipCreateLineBrush(
  point1: Pointer;   // PointF*
  point2: Pointer;   // PointF*
  color1: DWORD;   // DWORD
  color2: DWORD;   // DWORD
  wrapMode: Integer;   // WrapMode
  lineGradient: Pointer   // GpLineGradient** in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreateLineBrush';
result := DllCall("gdiplus\GdipCreateLineBrush"
    , "Ptr", point1   ; PointF*
    , "Ptr", point2   ; PointF*
    , "UInt", color1   ; DWORD
    , "UInt", color2   ; DWORD
    , "Int", wrapMode   ; WrapMode
    , "Ptr", lineGradient   ; GpLineGradient** in/out
    , "Int")   ; return: Status
●GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient) = DLL("gdiplus.dll", "int GdipCreateLineBrush(void*, void*, dword, dword, int, void*)")
# 呼び出し: GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient)
# point1 : PointF* -> "void*"
# point2 : PointF* -> "void*"
# color1 : DWORD -> "dword"
# color2 : DWORD -> "dword"
# wrapMode : WrapMode -> "int"
# lineGradient : GpLineGradient** 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 GdipCreateLineBrush(
    point1: [*c]PointF, // PointF*
    point2: [*c]PointF, // PointF*
    color1: u32, // DWORD
    color2: u32, // DWORD
    wrapMode: i32, // WrapMode
    lineGradient: [*c][*c]GpLineGradient // GpLineGradient** in/out
) callconv(std.os.windows.WINAPI) i32;
proc GdipCreateLineBrush(
    point1: ptr PointF,  # PointF*
    point2: ptr PointF,  # PointF*
    color1: uint32,  # DWORD
    color2: uint32,  # DWORD
    wrapMode: int32,  # WrapMode
    lineGradient: ptr GpLineGradient  # GpLineGradient** in/out
): int32 {.importc: "GdipCreateLineBrush", stdcall, dynlib: "gdiplus.dll".}
pragma(lib, "gdiplus");
extern(Windows)
int GdipCreateLineBrush(
    PointF* point1,   // PointF*
    PointF* point2,   // PointF*
    uint color1,   // DWORD
    uint color2,   // DWORD
    int wrapMode,   // WrapMode
    GpLineGradient** lineGradient   // GpLineGradient** in/out
);
ccall((:GdipCreateLineBrush, "gdiplus.dll"), stdcall, Int32,
      (Ptr{PointF}, Ptr{PointF}, UInt32, UInt32, Int32, Ptr{GpLineGradient}),
      point1, point2, color1, color2, wrapMode, lineGradient)
# point1 : PointF* -> Ptr{PointF}
# point2 : PointF* -> Ptr{PointF}
# color1 : DWORD -> UInt32
# color2 : DWORD -> UInt32
# wrapMode : WrapMode -> Int32
# lineGradient : GpLineGradient** in/out -> Ptr{GpLineGradient}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t GdipCreateLineBrush(
    void* point1,
    void* point2,
    uint32_t color1,
    uint32_t color2,
    int32_t wrapMode,
    void* lineGradient);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient)
-- point1 : PointF*
-- point2 : PointF*
-- color1 : DWORD
-- color2 : DWORD
-- wrapMode : WrapMode
-- lineGradient : GpLineGradient** 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 GdipCreateLineBrush = lib.func('__stdcall', 'GdipCreateLineBrush', 'int32_t', ['void *', 'void *', 'uint32_t', 'uint32_t', 'int32_t', 'void *']);
// GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient)
// point1 : PointF* -> 'void *'
// point2 : PointF* -> 'void *'
// color1 : DWORD -> 'uint32_t'
// color2 : DWORD -> 'uint32_t'
// wrapMode : WrapMode -> 'int32_t'
// lineGradient : GpLineGradient** 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", {
  GdipCreateLineBrush: { parameters: ["pointer", "pointer", "u32", "u32", "i32", "pointer"], result: "i32" },
});
// lib.symbols.GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient)
// point1 : PointF* -> "pointer"
// point2 : PointF* -> "pointer"
// color1 : DWORD -> "u32"
// color2 : DWORD -> "u32"
// wrapMode : WrapMode -> "i32"
// lineGradient : GpLineGradient** 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 GdipCreateLineBrush(
    void* point1,
    void* point2,
    uint32_t color1,
    uint32_t color2,
    int32_t wrapMode,
    void* lineGradient);
C, "gdiplus.dll");
// $ffi->GdipCreateLineBrush(point1, point2, color1, color2, wrapMode, lineGradient);
// point1 : PointF*
// point2 : PointF*
// color1 : DWORD
// color2 : DWORD
// wrapMode : WrapMode
// lineGradient : GpLineGradient** 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 GdipCreateLineBrush(
        Pointer point1,   // PointF*
        Pointer point2,   // PointF*
        int color1,   // DWORD
        int color2,   // DWORD
        int wrapMode,   // WrapMode
        Pointer lineGradient   // GpLineGradient** in/out
    );
}
@[Link("gdiplus")]
lib Libgdiplus
  fun GdipCreateLineBrush = GdipCreateLineBrush(
    point1 : PointF*,   # PointF*
    point2 : PointF*,   # PointF*
    color1 : UInt32,   # DWORD
    color2 : UInt32,   # DWORD
    wrapMode : Int32,   # WrapMode
    lineGradient : GpLineGradient**   # GpLineGradient** 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 GdipCreateLineBrushNative = Int32 Function(Pointer<Void>, Pointer<Void>, Uint32, Uint32, Int32, Pointer<Void>);
typedef GdipCreateLineBrushDart = int Function(Pointer<Void>, Pointer<Void>, int, int, int, Pointer<Void>);
final GdipCreateLineBrush = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipCreateLineBrushNative, GdipCreateLineBrushDart>('GdipCreateLineBrush');
// point1 : PointF* -> Pointer<Void>
// point2 : PointF* -> Pointer<Void>
// color1 : DWORD -> Uint32
// color2 : DWORD -> Uint32
// wrapMode : WrapMode -> Int32
// lineGradient : GpLineGradient** in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function GdipCreateLineBrush(
  point1: Pointer;   // PointF*
  point2: Pointer;   // PointF*
  color1: DWORD;   // DWORD
  color2: DWORD;   // DWORD
  wrapMode: Integer;   // WrapMode
  lineGradient: Pointer   // GpLineGradient** in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreateLineBrush';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GdipCreateLineBrush"
  c_GdipCreateLineBrush :: Ptr () -> Ptr () -> Word32 -> Word32 -> Int32 -> Ptr () -> IO Int32
-- point1 : PointF* -> Ptr ()
-- point2 : PointF* -> Ptr ()
-- color1 : DWORD -> Word32
-- color2 : DWORD -> Word32
-- wrapMode : WrapMode -> Int32
-- lineGradient : GpLineGradient** 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 gdipcreatelinebrush =
  foreign "GdipCreateLineBrush"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> uint32_t @-> int32_t @-> (ptr void) @-> returning int32_t)
(* point1 : PointF* -> (ptr void) *)
(* point2 : PointF* -> (ptr void) *)
(* color1 : DWORD -> uint32_t *)
(* color2 : DWORD -> uint32_t *)
(* wrapMode : WrapMode -> int32_t *)
(* lineGradient : GpLineGradient** 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 ("GdipCreateLineBrush" gdip-create-line-brush :convention :stdcall) :int32
  (point1 :pointer)   ; PointF*
  (point2 :pointer)   ; PointF*
  (color1 :uint32)   ; DWORD
  (color2 :uint32)   ; DWORD
  (wrap-mode :int32)   ; WrapMode
  (line-gradient :pointer))   ; GpLineGradient** in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $GdipCreateLineBrush = Win32::API::More->new('gdiplus',
    'int GdipCreateLineBrush(LPVOID point1, LPVOID point2, DWORD color1, DWORD color2, int wrapMode, LPVOID lineGradient)');
# my $ret = $GdipCreateLineBrush->Call($point1, $point2, $color1, $color2, $wrapMode, $lineGradient);
# point1 : PointF* -> LPVOID
# point2 : PointF* -> LPVOID
# color1 : DWORD -> DWORD
# color2 : DWORD -> DWORD
# wrapMode : WrapMode -> int
# lineGradient : GpLineGradient** 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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