glRectd

関数

倍精度座標で塗りつぶし矩形を描画する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

// OPENGL32.dll
#include <windows.h>

void glRectd(
    DOUBLE x1,
    DOUBLE y1,
    DOUBLE x2,
    DOUBLE y2
);

パラメーター

名前	型	方向
x1	DOUBLE	in
y1	DOUBLE	in
x2	DOUBLE	in
y2	DOUBLE	in

戻り値の型: void

各言語での呼び出し定義

// OPENGL32.dll
#include <windows.h>

void glRectd(
    DOUBLE x1,
    DOUBLE y1,
    DOUBLE x2,
    DOUBLE y2
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glRectd(
    double x1,   // DOUBLE
    double y1,   // DOUBLE
    double x2,   // DOUBLE
    double y2   // DOUBLE
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glRectd(
    x1 As Double,   ' DOUBLE
    y1 As Double,   ' DOUBLE
    x2 As Double,   ' DOUBLE
    y2 As Double   ' DOUBLE
)
End Sub

' x1 : DOUBLE
' y1 : DOUBLE
' x2 : DOUBLE
' y2 : DOUBLE
Declare PtrSafe Sub glRectd Lib "opengl32" ( _
    ByVal x1 As Double, _
    ByVal y1 As Double, _
    ByVal x2 As Double, _
    ByVal y2 As Double)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glRectd = ctypes.windll.opengl32.glRectd
glRectd.restype = None
glRectd.argtypes = [
    ctypes.c_double,  # x1 : DOUBLE
    ctypes.c_double,  # y1 : DOUBLE
    ctypes.c_double,  # x2 : DOUBLE
    ctypes.c_double,  # y2 : DOUBLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glRectd = Fiddle::Function.new(
  lib['glRectd'],
  [
    Fiddle::TYPE_DOUBLE,  # x1 : DOUBLE
    Fiddle::TYPE_DOUBLE,  # y1 : DOUBLE
    Fiddle::TYPE_DOUBLE,  # x2 : DOUBLE
    Fiddle::TYPE_DOUBLE,  # y2 : DOUBLE
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glRectd(
        x1: f64,  // DOUBLE
        y1: f64,  // DOUBLE
        x2: f64,  // DOUBLE
        y2: f64  // DOUBLE
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glRectd(double x1, double y1, double x2, double y2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glRectd' -Namespace Win32 -PassThru
# $api::glRectd(x1, y1, x2, y2)

#uselib "OPENGL32.dll"
#func global glRectd "glRectd" double, double, double, double
; glRectd x1, y1, x2, y2
; x1 : DOUBLE -> "double"
; y1 : DOUBLE -> "double"
; x2 : DOUBLE -> "double"
; y2 : DOUBLE -> "double"

#uselib "OPENGL32.dll"
#func global glRectd "glRectd" double, double, double, double
; glRectd x1, y1, x2, y2
; x1 : DOUBLE -> "double"
; y1 : DOUBLE -> "double"
; x2 : DOUBLE -> "double"
; y2 : DOUBLE -> "double"

; void glRectd(DOUBLE x1, DOUBLE y1, DOUBLE x2, DOUBLE y2)
#uselib "OPENGL32.dll"
#func global glRectd "glRectd" double, double, double, double
; glRectd x1, y1, x2, y2
; x1 : DOUBLE -> "double"
; y1 : DOUBLE -> "double"
; x2 : DOUBLE -> "double"
; y2 : DOUBLE -> "double"

import (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglRectd = opengl32.NewProc("glRectd")
)

// x1 (DOUBLE), y1 (DOUBLE), x2 (DOUBLE), y2 (DOUBLE)
r1, _, err := procglRectd.Call(
	uintptr(math.Float64bits(x1)),
	uintptr(math.Float64bits(y1)),
	uintptr(math.Float64bits(x2)),
	uintptr(math.Float64bits(y2)),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void
// 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。

procedure glRectd(
  x1: Double;   // DOUBLE
  y1: Double;   // DOUBLE
  x2: Double;   // DOUBLE
  y2: Double   // DOUBLE
); stdcall;
  external 'OPENGL32.dll' name 'glRectd';

result := DllCall("OPENGL32\glRectd"
    , "Double", x1   ; DOUBLE
    , "Double", y1   ; DOUBLE
    , "Double", x2   ; DOUBLE
    , "Double", y2   ; DOUBLE
    , "Int")   ; return: void

●glRectd(x1, y1, x2, y2) = DLL("OPENGL32.dll", "int glRectd(double, double, double, double)")
# 呼び出し: glRectd(x1, y1, x2, y2)
# x1 : DOUBLE -> "double"
# y1 : DOUBLE -> "double"
# x2 : DOUBLE -> "double"
# y2 : DOUBLE -> "double"
# 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)。