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GdipAddPathCurve2I

関数
張力を指定してGDI+のパスにスプライン曲線を追加する(整数版)。
DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipAddPathCurve2I(
    GpPath* path,
    const Point* points,
    INT count,
    FLOAT tension
);

パラメーター

名前方向説明
pathGpPath*inout張力指定付きカーディナルスプライン曲線を追加する対象のパスオブジェクトへのポインタ。
pointsPoint*in曲線が通過する整数座標点の配列(Point*)へのポインタ。
countINTinpoints配列の要素数(INT)。
tensionFLOATin曲線の張力(FLOAT)。0で直線的、値が大きいほど膨らむ。

戻り値の型: Status

各言語での呼び出し定義

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

Status GdipAddPathCurve2I(
    GpPath* path,
    const Point* points,
    INT count,
    FLOAT tension
);
[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipAddPathCurve2I(
    IntPtr path,   // GpPath* in/out
    IntPtr points,   // Point*
    int count,   // INT
    float tension   // FLOAT
);
<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipAddPathCurve2I(
    path As IntPtr,   ' GpPath* in/out
    points As IntPtr,   ' Point*
    count As Integer,   ' INT
    tension As Single   ' FLOAT
) As Integer
End Function
' path : GpPath* in/out
' points : Point*
' count : INT
' tension : FLOAT
Declare PtrSafe Function GdipAddPathCurve2I Lib "gdiplus" ( _
    ByVal path As LongPtr, _
    ByVal points As LongPtr, _
    ByVal count As Long, _
    ByVal tension 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

GdipAddPathCurve2I = ctypes.windll.gdiplus.GdipAddPathCurve2I
GdipAddPathCurve2I.restype = ctypes.c_int
GdipAddPathCurve2I.argtypes = [
    ctypes.c_void_p,  # path : GpPath* in/out
    ctypes.c_void_p,  # points : Point*
    ctypes.c_int,  # count : INT
    ctypes.c_float,  # tension : FLOAT
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipAddPathCurve2I = Fiddle::Function.new(
  lib['GdipAddPathCurve2I'],
  [
    Fiddle::TYPE_VOIDP,  # path : GpPath* in/out
    Fiddle::TYPE_VOIDP,  # points : Point*
    Fiddle::TYPE_INT,  # count : INT
    Fiddle::TYPE_FLOAT,  # tension : FLOAT
  ],
  Fiddle::TYPE_INT)
#[link(name = "gdiplus")]
extern "system" {
    fn GdipAddPathCurve2I(
        path: *mut GpPath,  // GpPath* in/out
        points: *const Point,  // Point*
        count: i32,  // INT
        tension: f32  // FLOAT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipAddPathCurve2I(IntPtr path, IntPtr points, int count, float tension);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipAddPathCurve2I' -Namespace Win32 -PassThru
# $api::GdipAddPathCurve2I(path, points, count, tension)
#uselib "gdiplus.dll"
#func global GdipAddPathCurve2I "GdipAddPathCurve2I" sptr, sptr, sptr, float
; GdipAddPathCurve2I varptr(path), varptr(points), count, tension   ; 戻り値は stat
; path : GpPath* in/out -> "sptr"
; points : Point* -> "sptr"
; count : INT -> "sptr"
; tension : FLOAT -> "float"
; ※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 GdipAddPathCurve2I "GdipAddPathCurve2I" var, var, int, float
; res = GdipAddPathCurve2I(path, points, count, tension)
; path : GpPath* in/out -> "var"
; points : Point* -> "var"
; count : INT -> "int"
; tension : FLOAT -> "float"
; ※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 GdipAddPathCurve2I(GpPath* path, Point* points, INT count, FLOAT tension)
#uselib "gdiplus.dll"
#cfunc global GdipAddPathCurve2I "GdipAddPathCurve2I" var, var, int, float
; res = GdipAddPathCurve2I(path, points, count, tension)
; path : GpPath* in/out -> "var"
; points : Point* -> "var"
; count : INT -> "int"
; tension : FLOAT -> "float"
; ※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 (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipAddPathCurve2I = gdiplus.NewProc("GdipAddPathCurve2I")
)

// path (GpPath* in/out), points (Point*), count (INT), tension (FLOAT)
r1, _, err := procGdipAddPathCurve2I.Call(
	uintptr(path),
	uintptr(points),
	uintptr(count),
	uintptr(math.Float32bits(tension)),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status
// 注意: float/double 引数は proc.Call では XMM レジスタに渡せません。
// windows.SyscallN(proc.Addr(), math.Float64bits(x), ...) もしくは cgo を使用してください。
function GdipAddPathCurve2I(
  path: Pointer;   // GpPath* in/out
  points: Pointer;   // Point*
  count: Integer;   // INT
  tension: Single   // FLOAT
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipAddPathCurve2I';
result := DllCall("gdiplus\GdipAddPathCurve2I"
    , "Ptr", path   ; GpPath* in/out
    , "Ptr", points   ; Point*
    , "Int", count   ; INT
    , "Float", tension   ; FLOAT
    , "Int")   ; return: Status
●GdipAddPathCurve2I(path, points, count, tension) = DLL("gdiplus.dll", "int GdipAddPathCurve2I(void*, void*, int, float)")
# 呼び出し: GdipAddPathCurve2I(path, points, count, tension)
# path : GpPath* in/out -> "void*"
# points : Point* -> "void*"
# count : INT -> "int"
# tension : FLOAT -> "float"
# 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 GdipAddPathCurve2I(
    path: [*c]GpPath, // GpPath* in/out
    points: [*c]Point, // Point*
    count: i32, // INT
    tension: f32 // FLOAT
) callconv(std.os.windows.WINAPI) i32;
proc GdipAddPathCurve2I(
    path: ptr GpPath,  # GpPath* in/out
    points: ptr Point,  # Point*
    count: int32,  # INT
    tension: float32  # FLOAT
): int32 {.importc: "GdipAddPathCurve2I", stdcall, dynlib: "gdiplus.dll".}
pragma(lib, "gdiplus");
extern(Windows)
int GdipAddPathCurve2I(
    GpPath* path,   // GpPath* in/out
    Point* points,   // Point*
    int count,   // INT
    float tension   // FLOAT
);
ccall((:GdipAddPathCurve2I, "gdiplus.dll"), stdcall, Int32,
      (Ptr{GpPath}, Ptr{Point}, Int32, Float32),
      path, points, count, tension)
# path : GpPath* in/out -> Ptr{GpPath}
# points : Point* -> Ptr{Point}
# count : INT -> Int32
# tension : FLOAT -> Float32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t GdipAddPathCurve2I(
    void* path,
    void* points,
    int32_t count,
    float tension);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipAddPathCurve2I(path, points, count, tension)
-- path : GpPath* in/out
-- points : Point*
-- count : INT
-- tension : FLOAT
-- 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 GdipAddPathCurve2I = lib.func('__stdcall', 'GdipAddPathCurve2I', 'int32_t', ['void *', 'void *', 'int32_t', 'float']);
// GdipAddPathCurve2I(path, points, count, tension)
// path : GpPath* in/out -> 'void *'
// points : Point* -> 'void *'
// count : INT -> 'int32_t'
// tension : FLOAT -> '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", {
  GdipAddPathCurve2I: { parameters: ["pointer", "pointer", "i32", "f32"], result: "i32" },
});
// lib.symbols.GdipAddPathCurve2I(path, points, count, tension)
// path : GpPath* in/out -> "pointer"
// points : Point* -> "pointer"
// count : INT -> "i32"
// tension : FLOAT -> "f32"
// 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 GdipAddPathCurve2I(
    void* path,
    void* points,
    int32_t count,
    float tension);
C, "gdiplus.dll");
// $ffi->GdipAddPathCurve2I(path, points, count, tension);
// path : GpPath* in/out
// points : Point*
// count : INT
// tension : FLOAT
// 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 GdipAddPathCurve2I(
        Pointer path,   // GpPath* in/out
        Pointer points,   // Point*
        int count,   // INT
        float tension   // FLOAT
    );
}
@[Link("gdiplus")]
lib Libgdiplus
  fun GdipAddPathCurve2I = GdipAddPathCurve2I(
    path : GpPath*,   # GpPath* in/out
    points : Point*,   # Point*
    count : Int32,   # INT
    tension : Float32   # FLOAT
  ) : 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 GdipAddPathCurve2INative = Int32 Function(Pointer<Void>, Pointer<Void>, Int32, Float);
typedef GdipAddPathCurve2IDart = int Function(Pointer<Void>, Pointer<Void>, int, double);
final GdipAddPathCurve2I = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipAddPathCurve2INative, GdipAddPathCurve2IDart>('GdipAddPathCurve2I');
// path : GpPath* in/out -> Pointer<Void>
// points : Point* -> Pointer<Void>
// count : INT -> Int32
// tension : FLOAT -> Float
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function GdipAddPathCurve2I(
  path: Pointer;   // GpPath* in/out
  points: Pointer;   // Point*
  count: Integer;   // INT
  tension: Single   // FLOAT
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipAddPathCurve2I';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GdipAddPathCurve2I"
  c_GdipAddPathCurve2I :: Ptr () -> Ptr () -> Int32 -> CFloat -> IO Int32
-- path : GpPath* in/out -> Ptr ()
-- points : Point* -> Ptr ()
-- count : INT -> Int32
-- tension : FLOAT -> 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 gdipaddpathcurve2i =
  foreign "GdipAddPathCurve2I"
    ((ptr void) @-> (ptr void) @-> int32_t @-> float @-> returning int32_t)
(* path : GpPath* in/out -> (ptr void) *)
(* points : Point* -> (ptr void) *)
(* count : INT -> int32_t *)
(* tension : FLOAT -> 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 ("GdipAddPathCurve2I" gdip-add-path-curve2-i :convention :stdcall) :int32
  (path :pointer)   ; GpPath* in/out
  (points :pointer)   ; Point*
  (count :int32)   ; INT
  (tension :float))   ; FLOAT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $GdipAddPathCurve2I = Win32::API::More->new('gdiplus',
    'int GdipAddPathCurve2I(LPVOID path, LPVOID points, int count, float tension)');
# my $ret = $GdipAddPathCurve2I->Call($path, $points, $count, $tension);
# path : GpPath* in/out -> LPVOID
# points : Point* -> LPVOID
# count : INT -> int
# tension : FLOAT -> float
# 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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