glGetError

関数

直近に発生したエラーコードを取得する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

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

DWORD glGetError(void);

パラメーターなし。戻り値: DWORD

各言語での呼び出し定義

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

DWORD glGetError(void);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern uint glGetError();

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Function glGetError() As UInteger
End Function

Declare PtrSafe Function glGetError Lib "opengl32" () As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glGetError = ctypes.windll.opengl32.glGetError
glGetError.restype = wintypes.DWORD
glGetError.argtypes = []

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glGetError = Fiddle::Function.new(
  lib['glGetError'],
  [],
  -Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern uint glGetError();
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glGetError' -Namespace Win32 -PassThru
# $api::glGetError()

#uselib "OPENGL32.dll"
#func global glGetError "glGetError"
; glGetError   ; 戻り値は stat
; ※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。

#uselib "OPENGL32.dll"
#cfunc global glGetError "glGetError"
; res = glGetError()

; DWORD glGetError()
#uselib "OPENGL32.dll"
#cfunc global glGetError "glGetError"
; res = glGetError()

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglGetError = opengl32.NewProc("glGetError")
)

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

function glGetError: DWORD; stdcall;
  external 'OPENGL32.dll' name 'glGetError';

result := DllCall("OPENGL32\glGetError", "UInt")

●glGetError() = DLL("OPENGL32.dll", "dword glGetError()")
# 呼び出し: glGetError()
# 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)。