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GdipGetPathGradientCenterPoint

関数
パスグラデーションの中心点を取得する。
DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipGetPathGradientCenterPoint(
    GpPathGradient* brush,
    PointF* points
);

パラメーター

名前方向説明
brushGpPathGradient*inout対象のパスグラデーションブラシへのポインタ。
pointsPointF*inout中心点(浮動小数)を受け取るポインタ。

戻り値の型: Status

各言語での呼び出し定義

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

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

GdipGetPathGradientCenterPoint = ctypes.windll.gdiplus.GdipGetPathGradientCenterPoint
GdipGetPathGradientCenterPoint.restype = ctypes.c_int
GdipGetPathGradientCenterPoint.argtypes = [
    ctypes.c_void_p,  # brush : GpPathGradient* in/out
    ctypes.c_void_p,  # points : PointF* in/out
]
require 'fiddle'
require 'fiddle/import'

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

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

foreign import stdcall safe "GdipGetPathGradientCenterPoint"
  c_GdipGetPathGradientCenterPoint :: Ptr () -> Ptr () -> IO Int32
-- brush : GpPathGradient* in/out -> Ptr ()
-- points : PointF* 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 gdipgetpathgradientcenterpoint =
  foreign "GdipGetPathGradientCenterPoint"
    ((ptr void) @-> (ptr void) @-> returning int32_t)
(* brush : GpPathGradient* in/out -> (ptr void) *)
(* points : PointF* 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 ("GdipGetPathGradientCenterPoint" gdip-get-path-gradient-center-point :convention :stdcall) :int32
  (brush :pointer)   ; GpPathGradient* in/out
  (points :pointer))   ; PointF* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $GdipGetPathGradientCenterPoint = Win32::API::More->new('gdiplus',
    'int GdipGetPathGradientCenterPoint(LPVOID brush, LPVOID points)');
# my $ret = $GdipGetPathGradientCenterPoint->Call($brush, $points);
# brush : GpPathGradient* in/out -> LPVOID
# points : PointF* 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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