glColor4b

関数

符号付きバイト値で描画色をRGBAアルファ付きで設定する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

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

void glColor4b(
    CHAR red,
    CHAR green,
    CHAR blue,
    CHAR alpha
);

パラメーター

名前	型	方向
red	CHAR	in
green	CHAR	in
blue	CHAR	in
alpha	CHAR	in

戻り値の型: void

各言語での呼び出し定義

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

void glColor4b(
    CHAR red,
    CHAR green,
    CHAR blue,
    CHAR alpha
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glColor4b(
    sbyte red,   // CHAR
    sbyte green,   // CHAR
    sbyte blue,   // CHAR
    sbyte alpha   // CHAR
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glColor4b(
    red As SByte,   ' CHAR
    green As SByte,   ' CHAR
    blue As SByte,   ' CHAR
    alpha As SByte   ' CHAR
)
End Sub

' red : CHAR
' green : CHAR
' blue : CHAR
' alpha : CHAR
Declare PtrSafe Sub glColor4b Lib "opengl32" ( _
    ByVal red As Byte, _
    ByVal green As Byte, _
    ByVal blue As Byte, _
    ByVal alpha As Byte)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glColor4b = ctypes.windll.opengl32.glColor4b
glColor4b.restype = None
glColor4b.argtypes = [
    ctypes.c_byte,  # red : CHAR
    ctypes.c_byte,  # green : CHAR
    ctypes.c_byte,  # blue : CHAR
    ctypes.c_byte,  # alpha : CHAR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glColor4b = Fiddle::Function.new(
  lib['glColor4b'],
  [
    Fiddle::TYPE_CHAR,  # red : CHAR
    Fiddle::TYPE_CHAR,  # green : CHAR
    Fiddle::TYPE_CHAR,  # blue : CHAR
    Fiddle::TYPE_CHAR,  # alpha : CHAR
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glColor4b(
        red: i8,  // CHAR
        green: i8,  // CHAR
        blue: i8,  // CHAR
        alpha: i8  // CHAR
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glColor4b(sbyte red, sbyte green, sbyte blue, sbyte alpha);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glColor4b' -Namespace Win32 -PassThru
# $api::glColor4b(red, green, blue, alpha)

#uselib "OPENGL32.dll"
#func global glColor4b "glColor4b" sptr, sptr, sptr, sptr
; glColor4b red, green, blue, alpha
; red : CHAR -> "sptr"
; green : CHAR -> "sptr"
; blue : CHAR -> "sptr"
; alpha : CHAR -> "sptr"

#uselib "OPENGL32.dll"
#func global glColor4b "glColor4b" int, int, int, int
; glColor4b red, green, blue, alpha
; red : CHAR -> "int"
; green : CHAR -> "int"
; blue : CHAR -> "int"
; alpha : CHAR -> "int"

; void glColor4b(CHAR red, CHAR green, CHAR blue, CHAR alpha)
#uselib "OPENGL32.dll"
#func global glColor4b "glColor4b" int, int, int, int
; glColor4b red, green, blue, alpha
; red : CHAR -> "int"
; green : CHAR -> "int"
; blue : CHAR -> "int"
; alpha : CHAR -> "int"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglColor4b = opengl32.NewProc("glColor4b")
)

// red (CHAR), green (CHAR), blue (CHAR), alpha (CHAR)
r1, _, err := procglColor4b.Call(
	uintptr(red),
	uintptr(green),
	uintptr(blue),
	uintptr(alpha),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure glColor4b(
  red: Shortint;   // CHAR
  green: Shortint;   // CHAR
  blue: Shortint;   // CHAR
  alpha: Shortint   // CHAR
); stdcall;
  external 'OPENGL32.dll' name 'glColor4b';

result := DllCall("OPENGL32\glColor4b"
    , "Char", red   ; CHAR
    , "Char", green   ; CHAR
    , "Char", blue   ; CHAR
    , "Char", alpha   ; CHAR
    , "Int")   ; return: void

●glColor4b(red, green, blue, alpha) = DLL("OPENGL32.dll", "int glColor4b(char, char, char, char)")
# 呼び出し: glColor4b(red, green, blue, alpha)
# red : CHAR -> "char"
# green : CHAR -> "char"
# blue : CHAR -> "char"
# alpha : CHAR -> "char"
# 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)。