GdipDrawBezier

関数

指定ペンで4制御点のベジェ曲線を描画する。

DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipDrawBezier(
    GpGraphics* graphics,
    GpPen* pen,
    FLOAT x1,
    FLOAT y1,
    FLOAT x2,
    FLOAT y2,
    FLOAT x3,
    FLOAT y3,
    FLOAT x4,
    FLOAT y4
);

パラメーター

名前	型	方向
graphics	GpGraphics*	inout
pen	GpPen*	inout
x1	FLOAT	in
y1	FLOAT	in
x2	FLOAT	in
y2	FLOAT	in
x3	FLOAT	in
y3	FLOAT	in
x4	FLOAT	in
y4	FLOAT	in

戻り値の型: Status

各言語での呼び出し定義

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

Status GdipDrawBezier(
    GpGraphics* graphics,
    GpPen* pen,
    FLOAT x1,
    FLOAT y1,
    FLOAT x2,
    FLOAT y2,
    FLOAT x3,
    FLOAT y3,
    FLOAT x4,
    FLOAT y4
);

[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipDrawBezier(
    IntPtr graphics,   // GpGraphics* in/out
    IntPtr pen,   // GpPen* in/out
    float x1,   // FLOAT
    float y1,   // FLOAT
    float x2,   // FLOAT
    float y2,   // FLOAT
    float x3,   // FLOAT
    float y3,   // FLOAT
    float x4,   // FLOAT
    float y4   // FLOAT
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipDrawBezier(
    graphics As IntPtr,   ' GpGraphics* in/out
    pen As IntPtr,   ' GpPen* in/out
    x1 As Single,   ' FLOAT
    y1 As Single,   ' FLOAT
    x2 As Single,   ' FLOAT
    y2 As Single,   ' FLOAT
    x3 As Single,   ' FLOAT
    y3 As Single,   ' FLOAT
    x4 As Single,   ' FLOAT
    y4 As Single   ' FLOAT
) As Integer
End Function

' graphics : GpGraphics* in/out
' pen : GpPen* in/out
' x1 : FLOAT
' y1 : FLOAT
' x2 : FLOAT
' y2 : FLOAT
' x3 : FLOAT
' y3 : FLOAT
' x4 : FLOAT
' y4 : FLOAT
Declare PtrSafe Function GdipDrawBezier Lib "gdiplus" ( _
    ByVal graphics As LongPtr, _
    ByVal pen As LongPtr, _
    ByVal x1 As Single, _
    ByVal y1 As Single, _
    ByVal x2 As Single, _
    ByVal y2 As Single, _
    ByVal x3 As Single, _
    ByVal y3 As Single, _
    ByVal x4 As Single, _
    ByVal y4 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

GdipDrawBezier = ctypes.windll.gdiplus.GdipDrawBezier
GdipDrawBezier.restype = ctypes.c_int
GdipDrawBezier.argtypes = [
    ctypes.c_void_p,  # graphics : GpGraphics* in/out
    ctypes.c_void_p,  # pen : GpPen* in/out
    ctypes.c_float,  # x1 : FLOAT
    ctypes.c_float,  # y1 : FLOAT
    ctypes.c_float,  # x2 : FLOAT
    ctypes.c_float,  # y2 : FLOAT
    ctypes.c_float,  # x3 : FLOAT
    ctypes.c_float,  # y3 : FLOAT
    ctypes.c_float,  # x4 : FLOAT
    ctypes.c_float,  # y4 : FLOAT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipDrawBezier = Fiddle::Function.new(
  lib['GdipDrawBezier'],
  [
    Fiddle::TYPE_VOIDP,  # graphics : GpGraphics* in/out
    Fiddle::TYPE_VOIDP,  # pen : GpPen* in/out
    Fiddle::TYPE_FLOAT,  # x1 : FLOAT
    Fiddle::TYPE_FLOAT,  # y1 : FLOAT
    Fiddle::TYPE_FLOAT,  # x2 : FLOAT
    Fiddle::TYPE_FLOAT,  # y2 : FLOAT
    Fiddle::TYPE_FLOAT,  # x3 : FLOAT
    Fiddle::TYPE_FLOAT,  # y3 : FLOAT
    Fiddle::TYPE_FLOAT,  # x4 : FLOAT
    Fiddle::TYPE_FLOAT,  # y4 : FLOAT
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipDrawBezier(
        graphics: *mut GpGraphics,  // GpGraphics* in/out
        pen: *mut GpPen,  // GpPen* in/out
        x1: f32,  // FLOAT
        y1: f32,  // FLOAT
        x2: f32,  // FLOAT
        y2: f32,  // FLOAT
        x3: f32,  // FLOAT
        y3: f32,  // FLOAT
        x4: f32,  // FLOAT
        y4: f32  // FLOAT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipDrawBezier(IntPtr graphics, IntPtr pen, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipDrawBezier' -Namespace Win32 -PassThru
# $api::GdipDrawBezier(graphics, pen, x1, y1, x2, y2, x3, y3, x4, y4)

#uselib "gdiplus.dll"
#func global GdipDrawBezier "GdipDrawBezier" sptr, sptr, float, float, float, float, float, float, float, float
; GdipDrawBezier varptr(graphics), varptr(pen), x1, y1, x2, y2, x3, y3, x4, y4   ; 戻り値は stat
; graphics : GpGraphics* in/out -> "sptr"
; pen : GpPen* in/out -> "sptr"
; x1 : FLOAT -> "float"
; y1 : FLOAT -> "float"
; x2 : FLOAT -> "float"
; y2 : FLOAT -> "float"
; x3 : FLOAT -> "float"
; y3 : FLOAT -> "float"
; x4 : FLOAT -> "float"
; y4 : 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 GdipDrawBezier "GdipDrawBezier" var, var, float, float, float, float, float, float, float, float
; res = GdipDrawBezier(graphics, pen, x1, y1, x2, y2, x3, y3, x4, y4)
; graphics : GpGraphics* in/out -> "var"
; pen : GpPen* in/out -> "var"
; x1 : FLOAT -> "float"
; y1 : FLOAT -> "float"
; x2 : FLOAT -> "float"
; y2 : FLOAT -> "float"
; x3 : FLOAT -> "float"
; y3 : FLOAT -> "float"
; x4 : FLOAT -> "float"
; y4 : 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。#uselib "gdiplus.dll"
#cfunc global GdipDrawBezier "GdipDrawBezier" sptr, sptr, float, float, float, float, float, float, float, float
; res = GdipDrawBezier(varptr(graphics), varptr(pen), x1, y1, x2, y2, x3, y3, x4, y4)
; graphics : GpGraphics* in/out -> "sptr"
; pen : GpPen* in/out -> "sptr"
; x1 : FLOAT -> "float"
; y1 : FLOAT -> "float"
; x2 : FLOAT -> "float"
; y2 : FLOAT -> "float"
; x3 : FLOAT -> "float"
; y3 : FLOAT -> "float"
; x4 : FLOAT -> "float"
; y4 : FLOAT -> "float"
; ※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 GdipDrawBezier(GpGraphics* graphics, GpPen* pen, FLOAT x1, FLOAT y1, FLOAT x2, FLOAT y2, FLOAT x3, FLOAT y3, FLOAT x4, FLOAT y4)
#uselib "gdiplus.dll"
#cfunc global GdipDrawBezier "GdipDrawBezier" var, var, float, float, float, float, float, float, float, float
; res = GdipDrawBezier(graphics, pen, x1, y1, x2, y2, x3, y3, x4, y4)
; graphics : GpGraphics* in/out -> "var"
; pen : GpPen* in/out -> "var"
; x1 : FLOAT -> "float"
; y1 : FLOAT -> "float"
; x2 : FLOAT -> "float"
; y2 : FLOAT -> "float"
; x3 : FLOAT -> "float"
; y3 : FLOAT -> "float"
; x4 : FLOAT -> "float"
; y4 : 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。; Status GdipDrawBezier(GpGraphics* graphics, GpPen* pen, FLOAT x1, FLOAT y1, FLOAT x2, FLOAT y2, FLOAT x3, FLOAT y3, FLOAT x4, FLOAT y4)
#uselib "gdiplus.dll"
#cfunc global GdipDrawBezier "GdipDrawBezier" intptr, intptr, float, float, float, float, float, float, float, float
; res = GdipDrawBezier(varptr(graphics), varptr(pen), x1, y1, x2, y2, x3, y3, x4, y4)
; graphics : GpGraphics* in/out -> "intptr"
; pen : GpPen* in/out -> "intptr"
; x1 : FLOAT -> "float"
; y1 : FLOAT -> "float"
; x2 : FLOAT -> "float"
; y2 : FLOAT -> "float"
; x3 : FLOAT -> "float"
; y3 : FLOAT -> "float"
; x4 : FLOAT -> "float"
; y4 : FLOAT -> "float"
; ※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 (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipDrawBezier = gdiplus.NewProc("GdipDrawBezier")
)

// graphics (GpGraphics* in/out), pen (GpPen* in/out), x1 (FLOAT), y1 (FLOAT), x2 (FLOAT), y2 (FLOAT), x3 (FLOAT), y3 (FLOAT), x4 (FLOAT), y4 (FLOAT)
r1, _, err := procGdipDrawBezier.Call(
	uintptr(graphics),
	uintptr(pen),
	uintptr(math.Float32bits(x1)),
	uintptr(math.Float32bits(y1)),
	uintptr(math.Float32bits(x2)),
	uintptr(math.Float32bits(y2)),
	uintptr(math.Float32bits(x3)),
	uintptr(math.Float32bits(y3)),
	uintptr(math.Float32bits(x4)),
	uintptr(math.Float32bits(y4)),
)
_ = 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 GdipDrawBezier(
  graphics: Pointer;   // GpGraphics* in/out
  pen: Pointer;   // GpPen* in/out
  x1: Single;   // FLOAT
  y1: Single;   // FLOAT
  x2: Single;   // FLOAT
  y2: Single;   // FLOAT
  x3: Single;   // FLOAT
  y3: Single;   // FLOAT
  x4: Single;   // FLOAT
  y4: Single   // FLOAT
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipDrawBezier';

result := DllCall("gdiplus\GdipDrawBezier"
    , "Ptr", graphics   ; GpGraphics* in/out
    , "Ptr", pen   ; GpPen* in/out
    , "Float", x1   ; FLOAT
    , "Float", y1   ; FLOAT
    , "Float", x2   ; FLOAT
    , "Float", y2   ; FLOAT
    , "Float", x3   ; FLOAT
    , "Float", y3   ; FLOAT
    , "Float", x4   ; FLOAT
    , "Float", y4   ; FLOAT
    , "Int")   ; return: Status

●GdipDrawBezier(graphics, pen, x1, y1, x2, y2, x3, y3, x4, y4) = DLL("gdiplus.dll", "int GdipDrawBezier(void*, void*, float, float, float, float, float, float, float, float)")
# 呼び出し: GdipDrawBezier(graphics, pen, x1, y1, x2, y2, x3, y3, x4, y4)
# graphics : GpGraphics* in/out -> "void*"
# pen : GpPen* in/out -> "void*"
# x1 : FLOAT -> "float"
# y1 : FLOAT -> "float"
# x2 : FLOAT -> "float"
# y2 : FLOAT -> "float"
# x3 : FLOAT -> "float"
# y3 : FLOAT -> "float"
# x4 : FLOAT -> "float"
# y4 : 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)。