gluGetNurbsProperty

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

void gluGetNurbsProperty(
    GLUnurbs* nobj,
    DWORD property,
    FLOAT* value
);

<DllImport("GLU32.dll", ExactSpelling:=True)>
Public Shared Sub gluGetNurbsProperty(
    ByRef nobj As IntPtr,   ' GLUnurbs* in/out
    [property] As UInteger,   ' DWORD
    ByRef value As Single   ' FLOAT* in/out
)
End Sub

' nobj : GLUnurbs* in/out
' property : DWORD
' value : FLOAT* in/out
Declare PtrSafe Sub gluGetNurbsProperty Lib "glu32" ( _
    ByRef nobj As LongPtr, _
    ByVal property As Long, _
    ByRef value As Single)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

gluGetNurbsProperty = ctypes.windll.glu32.gluGetNurbsProperty
gluGetNurbsProperty.restype = None
gluGetNurbsProperty.argtypes = [
    ctypes.c_void_p,  # nobj : GLUnurbs* in/out
    wintypes.DWORD,  # property : DWORD
    ctypes.POINTER(ctypes.c_float),  # value : FLOAT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GLU32.dll')
gluGetNurbsProperty = Fiddle::Function.new(
  lib['gluGetNurbsProperty'],
  [
    Fiddle::TYPE_VOIDP,  # nobj : GLUnurbs* in/out
    -Fiddle::TYPE_INT,  # property : DWORD
    Fiddle::TYPE_VOIDP,  # value : FLOAT* in/out
  ],
  Fiddle::TYPE_VOID)

#[link(name = "glu32")]
extern "system" {
    fn gluGetNurbsProperty(
        nobj: *mut isize,  // GLUnurbs* in/out
        property: u32,  // DWORD
        value: *mut f32  // FLOAT* in/out
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GLU32.dll")]
public static extern void gluGetNurbsProperty(ref IntPtr nobj, uint property, ref float value);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GLU32_gluGetNurbsProperty' -Namespace Win32 -PassThru
# $api::gluGetNurbsProperty(nobj, property, value)

#uselib "GLU32.dll"
#func global gluGetNurbsProperty "gluGetNurbsProperty" sptr, sptr, sptr
; gluGetNurbsProperty nobj, property, varptr(value)
; nobj : GLUnurbs* in/out -> "sptr"
; property : DWORD -> "sptr"
; value : FLOAT* in/out -> "sptr"

#uselib "GLU32.dll"
#func global gluGetNurbsProperty "gluGetNurbsProperty" int, int, var
; gluGetNurbsProperty nobj, property, value
; nobj : GLUnurbs* in/out -> "int"
; property : DWORD -> "int"
; value : FLOAT* in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; void gluGetNurbsProperty(GLUnurbs* nobj, DWORD property, FLOAT* value)
#uselib "GLU32.dll"
#func global gluGetNurbsProperty "gluGetNurbsProperty" int, int, var
; gluGetNurbsProperty nobj, property, value
; nobj : GLUnurbs* in/out -> "int"
; property : DWORD -> "int"
; value : FLOAT* in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	glu32 = windows.NewLazySystemDLL("GLU32.dll")
	procgluGetNurbsProperty = glu32.NewProc("gluGetNurbsProperty")
)

// nobj (GLUnurbs* in/out), property (DWORD), value (FLOAT* in/out)
r1, _, err := procgluGetNurbsProperty.Call(
	uintptr(nobj),
	uintptr(property),
	uintptr(value),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure gluGetNurbsProperty(
  nobj: Pointer;   // GLUnurbs* in/out
  property: DWORD;   // DWORD
  value: Pointer   // FLOAT* in/out
); stdcall;
  external 'GLU32.dll' name 'gluGetNurbsProperty';

result := DllCall("GLU32\gluGetNurbsProperty"
    , "Ptr", nobj   ; GLUnurbs* in/out
    , "UInt", property   ; DWORD
    , "Ptr", value   ; FLOAT* in/out
    , "Int")   ; return: void

●gluGetNurbsProperty(nobj, property, value) = DLL("GLU32.dll", "int gluGetNurbsProperty(void*, dword, void*)")
# 呼び出し: gluGetNurbsProperty(nobj, property, value)
# nobj : GLUnurbs* in/out -> "void*"
# property : DWORD -> "dword"
# value : FLOAT* in/out -> "void*"
# 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)。