gluTessNormal

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

void gluTessNormal(
    GLUtesselator* tess,
    DOUBLE x,
    DOUBLE y,
    DOUBLE z
);

<DllImport("GLU32.dll", ExactSpelling:=True)>
Public Shared Sub gluTessNormal(
    ByRef tess As IntPtr,   ' GLUtesselator* in/out
    x As Double,   ' DOUBLE
    y As Double,   ' DOUBLE
    z As Double   ' DOUBLE
)
End Sub

' tess : GLUtesselator* in/out
' x : DOUBLE
' y : DOUBLE
' z : DOUBLE
Declare PtrSafe Sub gluTessNormal Lib "glu32" ( _
    ByRef tess As LongPtr, _
    ByVal x As Double, _
    ByVal y As Double, _
    ByVal z As Double)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

gluTessNormal = ctypes.windll.glu32.gluTessNormal
gluTessNormal.restype = None
gluTessNormal.argtypes = [
    ctypes.c_void_p,  # tess : GLUtesselator* in/out
    ctypes.c_double,  # x : DOUBLE
    ctypes.c_double,  # y : DOUBLE
    ctypes.c_double,  # z : DOUBLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GLU32.dll')
gluTessNormal = Fiddle::Function.new(
  lib['gluTessNormal'],
  [
    Fiddle::TYPE_VOIDP,  # tess : GLUtesselator* in/out
    Fiddle::TYPE_DOUBLE,  # x : DOUBLE
    Fiddle::TYPE_DOUBLE,  # y : DOUBLE
    Fiddle::TYPE_DOUBLE,  # z : DOUBLE
  ],
  Fiddle::TYPE_VOID)

#[link(name = "glu32")]
extern "system" {
    fn gluTessNormal(
        tess: *mut isize,  // GLUtesselator* in/out
        x: f64,  // DOUBLE
        y: f64,  // DOUBLE
        z: f64  // DOUBLE
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GLU32.dll")]
public static extern void gluTessNormal(ref IntPtr tess, double x, double y, double z);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GLU32_gluTessNormal' -Namespace Win32 -PassThru
# $api::gluTessNormal(tess, x, y, z)

#uselib "GLU32.dll"
#func global gluTessNormal "gluTessNormal" sptr, double, double, double
; gluTessNormal tess, x, y, z
; tess : GLUtesselator* in/out -> "sptr"
; x : DOUBLE -> "double"
; y : DOUBLE -> "double"
; z : DOUBLE -> "double"

#uselib "GLU32.dll"
#func global gluTessNormal "gluTessNormal" int, double, double, double
; gluTessNormal tess, x, y, z
; tess : GLUtesselator* in/out -> "int"
; x : DOUBLE -> "double"
; y : DOUBLE -> "double"
; z : DOUBLE -> "double"

; void gluTessNormal(GLUtesselator* tess, DOUBLE x, DOUBLE y, DOUBLE z)
#uselib "GLU32.dll"
#func global gluTessNormal "gluTessNormal" int, double, double, double
; gluTessNormal tess, x, y, z
; tess : GLUtesselator* in/out -> "int"
; x : DOUBLE -> "double"
; y : DOUBLE -> "double"
; z : DOUBLE -> "double"

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

var (
	glu32 = windows.NewLazySystemDLL("GLU32.dll")
	procgluTessNormal = glu32.NewProc("gluTessNormal")
)

// tess (GLUtesselator* in/out), x (DOUBLE), y (DOUBLE), z (DOUBLE)
r1, _, err := procgluTessNormal.Call(
	uintptr(tess),
	uintptr(math.Float64bits(x)),
	uintptr(math.Float64bits(y)),
	uintptr(math.Float64bits(z)),
)
_ = 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 gluTessNormal(
  tess: Pointer;   // GLUtesselator* in/out
  x: Double;   // DOUBLE
  y: Double;   // DOUBLE
  z: Double   // DOUBLE
); stdcall;
  external 'GLU32.dll' name 'gluTessNormal';

result := DllCall("GLU32\gluTessNormal"
    , "Ptr", tess   ; GLUtesselator* in/out
    , "Double", x   ; DOUBLE
    , "Double", y   ; DOUBLE
    , "Double", z   ; DOUBLE
    , "Int")   ; return: void

●gluTessNormal(tess, x, y, z) = DLL("GLU32.dll", "int gluTessNormal(void*, double, double, double)")
# 呼び出し: gluTessNormal(tess, x, y, z)
# tess : GLUtesselator* in/out -> "void*"
# x : DOUBLE -> "double"
# y : DOUBLE -> "double"
# z : 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)。