gluOrtho2D

// GLU32.dll
#include <windows.h>

void gluOrtho2D(
    DOUBLE left,
    DOUBLE right,
    DOUBLE bottom,
    DOUBLE top
);

<DllImport("GLU32.dll", ExactSpelling:=True)>
Public Shared Sub gluOrtho2D(
    left As Double,   ' DOUBLE
    right As Double,   ' DOUBLE
    bottom As Double,   ' DOUBLE
    top As Double   ' DOUBLE
)
End Sub

' left : DOUBLE
' right : DOUBLE
' bottom : DOUBLE
' top : DOUBLE
Declare PtrSafe Sub gluOrtho2D Lib "glu32" ( _
    ByVal left As Double, _
    ByVal right As Double, _
    ByVal bottom As Double, _
    ByVal top As Double)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

gluOrtho2D = ctypes.windll.glu32.gluOrtho2D
gluOrtho2D.restype = None
gluOrtho2D.argtypes = [
    ctypes.c_double,  # left : DOUBLE
    ctypes.c_double,  # right : DOUBLE
    ctypes.c_double,  # bottom : DOUBLE
    ctypes.c_double,  # top : DOUBLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GLU32.dll')
gluOrtho2D = Fiddle::Function.new(
  lib['gluOrtho2D'],
  [
    Fiddle::TYPE_DOUBLE,  # left : DOUBLE
    Fiddle::TYPE_DOUBLE,  # right : DOUBLE
    Fiddle::TYPE_DOUBLE,  # bottom : DOUBLE
    Fiddle::TYPE_DOUBLE,  # top : DOUBLE
  ],
  Fiddle::TYPE_VOID)

#[link(name = "glu32")]
extern "system" {
    fn gluOrtho2D(
        left: f64,  // DOUBLE
        right: f64,  // DOUBLE
        bottom: f64,  // DOUBLE
        top: f64  // DOUBLE
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GLU32.dll")]
public static extern void gluOrtho2D(double left, double right, double bottom, double top);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GLU32_gluOrtho2D' -Namespace Win32 -PassThru
# $api::gluOrtho2D(left, right, bottom, top)

#uselib "GLU32.dll"
#func global gluOrtho2D "gluOrtho2D" double, double, double, double
; gluOrtho2D left, right, bottom, top
; left : DOUBLE -> "double"
; right : DOUBLE -> "double"
; bottom : DOUBLE -> "double"
; top : DOUBLE -> "double"

#uselib "GLU32.dll"
#func global gluOrtho2D "gluOrtho2D" double, double, double, double
; gluOrtho2D left, right, bottom, top
; left : DOUBLE -> "double"
; right : DOUBLE -> "double"
; bottom : DOUBLE -> "double"
; top : DOUBLE -> "double"

; void gluOrtho2D(DOUBLE left, DOUBLE right, DOUBLE bottom, DOUBLE top)
#uselib "GLU32.dll"
#func global gluOrtho2D "gluOrtho2D" double, double, double, double
; gluOrtho2D left, right, bottom, top
; left : DOUBLE -> "double"
; right : DOUBLE -> "double"
; bottom : DOUBLE -> "double"
; top : DOUBLE -> "double"

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

var (
	glu32 = windows.NewLazySystemDLL("GLU32.dll")
	procgluOrtho2D = glu32.NewProc("gluOrtho2D")
)

// left (DOUBLE), right (DOUBLE), bottom (DOUBLE), top (DOUBLE)
r1, _, err := procgluOrtho2D.Call(
	uintptr(math.Float64bits(left)),
	uintptr(math.Float64bits(right)),
	uintptr(math.Float64bits(bottom)),
	uintptr(math.Float64bits(top)),
)
_ = 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 gluOrtho2D(
  left: Double;   // DOUBLE
  right: Double;   // DOUBLE
  bottom: Double;   // DOUBLE
  top: Double   // DOUBLE
); stdcall;
  external 'GLU32.dll' name 'gluOrtho2D';

result := DllCall("GLU32\gluOrtho2D"
    , "Double", left   ; DOUBLE
    , "Double", right   ; DOUBLE
    , "Double", bottom   ; DOUBLE
    , "Double", top   ; DOUBLE
    , "Int")   ; return: void

●gluOrtho2D(left, right, bottom, top) = DLL("GLU32.dll", "int gluOrtho2D(double, double, double, double)")
# 呼び出し: gluOrtho2D(left, right, bottom, top)
# left : DOUBLE -> "double"
# right : DOUBLE -> "double"
# bottom : DOUBLE -> "double"
# top : 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)。