glDrawBuffer

関数

描画先となるカラーバッファを選択する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

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

void glDrawBuffer(
    DWORD mode
);

パラメーター

名前	型	方向
mode	DWORD	in

戻り値の型: void

各言語での呼び出し定義

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

void glDrawBuffer(
    DWORD mode
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glDrawBuffer(
    uint mode   // DWORD
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glDrawBuffer(
    mode As UInteger   ' DWORD
)
End Sub

' mode : DWORD
Declare PtrSafe Sub glDrawBuffer Lib "opengl32" ( _
    ByVal mode As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glDrawBuffer = ctypes.windll.opengl32.glDrawBuffer
glDrawBuffer.restype = None
glDrawBuffer.argtypes = [
    wintypes.DWORD,  # mode : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glDrawBuffer = Fiddle::Function.new(
  lib['glDrawBuffer'],
  [
    -Fiddle::TYPE_INT,  # mode : DWORD
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glDrawBuffer(
        mode: u32  // DWORD
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glDrawBuffer(uint mode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glDrawBuffer' -Namespace Win32 -PassThru
# $api::glDrawBuffer(mode)

#uselib "OPENGL32.dll"
#func global glDrawBuffer "glDrawBuffer" sptr
; glDrawBuffer mode
; mode : DWORD -> "sptr"

#uselib "OPENGL32.dll"
#func global glDrawBuffer "glDrawBuffer" int
; glDrawBuffer mode
; mode : DWORD -> "int"

; void glDrawBuffer(DWORD mode)
#uselib "OPENGL32.dll"
#func global glDrawBuffer "glDrawBuffer" int
; glDrawBuffer mode
; mode : DWORD -> "int"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglDrawBuffer = opengl32.NewProc("glDrawBuffer")
)

// mode (DWORD)
r1, _, err := procglDrawBuffer.Call(
	uintptr(mode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure glDrawBuffer(
  mode: DWORD   // DWORD
); stdcall;
  external 'OPENGL32.dll' name 'glDrawBuffer';

result := DllCall("OPENGL32\glDrawBuffer"
    , "UInt", mode   ; DWORD
    , "Int")   ; return: void

●glDrawBuffer(mode) = DLL("OPENGL32.dll", "int glDrawBuffer(dword)")
# 呼び出し: glDrawBuffer(mode)
# mode : DWORD -> "dword"
# 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)。