glColor4us

関数

符号なし短整数値で描画色をRGBAで設定する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

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

void glColor4us(
    WORD red,
    WORD green,
    WORD blue,
    WORD alpha
);

パラメーター

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

戻り値の型: void

各言語での呼び出し定義

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

void glColor4us(
    WORD red,
    WORD green,
    WORD blue,
    WORD alpha
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glColor4us(
    ushort red,   // WORD
    ushort green,   // WORD
    ushort blue,   // WORD
    ushort alpha   // WORD
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glColor4us(
    red As UShort,   ' WORD
    green As UShort,   ' WORD
    blue As UShort,   ' WORD
    alpha As UShort   ' WORD
)
End Sub

' red : WORD
' green : WORD
' blue : WORD
' alpha : WORD
Declare PtrSafe Sub glColor4us Lib "opengl32" ( _
    ByVal red As Integer, _
    ByVal green As Integer, _
    ByVal blue As Integer, _
    ByVal alpha As Integer)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glColor4us = ctypes.windll.opengl32.glColor4us
glColor4us.restype = None
glColor4us.argtypes = [
    ctypes.c_ushort,  # red : WORD
    ctypes.c_ushort,  # green : WORD
    ctypes.c_ushort,  # blue : WORD
    ctypes.c_ushort,  # alpha : WORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glColor4us = Fiddle::Function.new(
  lib['glColor4us'],
  [
    -Fiddle::TYPE_SHORT,  # red : WORD
    -Fiddle::TYPE_SHORT,  # green : WORD
    -Fiddle::TYPE_SHORT,  # blue : WORD
    -Fiddle::TYPE_SHORT,  # alpha : WORD
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glColor4us(
        red: u16,  // WORD
        green: u16,  // WORD
        blue: u16,  // WORD
        alpha: u16  // WORD
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glColor4us(ushort red, ushort green, ushort blue, ushort alpha);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glColor4us' -Namespace Win32 -PassThru
# $api::glColor4us(red, green, blue, alpha)

#uselib "OPENGL32.dll"
#func global glColor4us "glColor4us" sptr, sptr, sptr, sptr
; glColor4us red, green, blue, alpha
; red : WORD -> "sptr"
; green : WORD -> "sptr"
; blue : WORD -> "sptr"
; alpha : WORD -> "sptr"

#uselib "OPENGL32.dll"
#func global glColor4us "glColor4us" int, int, int, int
; glColor4us red, green, blue, alpha
; red : WORD -> "int"
; green : WORD -> "int"
; blue : WORD -> "int"
; alpha : WORD -> "int"

; void glColor4us(WORD red, WORD green, WORD blue, WORD alpha)
#uselib "OPENGL32.dll"
#func global glColor4us "glColor4us" int, int, int, int
; glColor4us red, green, blue, alpha
; red : WORD -> "int"
; green : WORD -> "int"
; blue : WORD -> "int"
; alpha : WORD -> "int"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglColor4us = opengl32.NewProc("glColor4us")
)

// red (WORD), green (WORD), blue (WORD), alpha (WORD)
r1, _, err := procglColor4us.Call(
	uintptr(red),
	uintptr(green),
	uintptr(blue),
	uintptr(alpha),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure glColor4us(
  red: Word;   // WORD
  green: Word;   // WORD
  blue: Word;   // WORD
  alpha: Word   // WORD
); stdcall;
  external 'OPENGL32.dll' name 'glColor4us';

result := DllCall("OPENGL32\glColor4us"
    , "UShort", red   ; WORD
    , "UShort", green   ; WORD
    , "UShort", blue   ; WORD
    , "UShort", alpha   ; WORD
    , "Int")   ; return: void

●glColor4us(red, green, blue, alpha) = DLL("OPENGL32.dll", "int glColor4us(int, int, int, int)")
# 呼び出し: glColor4us(red, green, blue, alpha)
# red : WORD -> "int"
# green : WORD -> "int"
# blue : WORD -> "int"
# alpha : WORD -> "int"
# 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)。