gluLoadSamplingMatrices

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

void gluLoadSamplingMatrices(
    GLUnurbs* nobj,
    const FLOAT* modelMatrix,
    const FLOAT* projMatrix,
    const INT* viewport
);

<DllImport("GLU32.dll", ExactSpelling:=True)>
Public Shared Sub gluLoadSamplingMatrices(
    ByRef nobj As IntPtr,   ' GLUnurbs* in/out
    ByRef modelMatrix As Single,   ' FLOAT*
    ByRef projMatrix As Single,   ' FLOAT*
    ByRef viewport As Integer   ' INT*
)
End Sub

' nobj : GLUnurbs* in/out
' modelMatrix : FLOAT*
' projMatrix : FLOAT*
' viewport : INT*
Declare PtrSafe Sub gluLoadSamplingMatrices Lib "glu32" ( _
    ByRef nobj As LongPtr, _
    ByRef modelMatrix As Single, _
    ByRef projMatrix As Single, _
    ByRef viewport As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

gluLoadSamplingMatrices = ctypes.windll.glu32.gluLoadSamplingMatrices
gluLoadSamplingMatrices.restype = None
gluLoadSamplingMatrices.argtypes = [
    ctypes.c_void_p,  # nobj : GLUnurbs* in/out
    ctypes.POINTER(ctypes.c_float),  # modelMatrix : FLOAT*
    ctypes.POINTER(ctypes.c_float),  # projMatrix : FLOAT*
    ctypes.POINTER(ctypes.c_int),  # viewport : INT*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GLU32.dll')
gluLoadSamplingMatrices = Fiddle::Function.new(
  lib['gluLoadSamplingMatrices'],
  [
    Fiddle::TYPE_VOIDP,  # nobj : GLUnurbs* in/out
    Fiddle::TYPE_VOIDP,  # modelMatrix : FLOAT*
    Fiddle::TYPE_VOIDP,  # projMatrix : FLOAT*
    Fiddle::TYPE_VOIDP,  # viewport : INT*
  ],
  Fiddle::TYPE_VOID)

#[link(name = "glu32")]
extern "system" {
    fn gluLoadSamplingMatrices(
        nobj: *mut isize,  // GLUnurbs* in/out
        modelMatrix: *const f32,  // FLOAT*
        projMatrix: *const f32,  // FLOAT*
        viewport: *const i32  // INT*
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GLU32.dll")]
public static extern void gluLoadSamplingMatrices(ref IntPtr nobj, ref float modelMatrix, ref float projMatrix, ref int viewport);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GLU32_gluLoadSamplingMatrices' -Namespace Win32 -PassThru
# $api::gluLoadSamplingMatrices(nobj, modelMatrix, projMatrix, viewport)

#uselib "GLU32.dll"
#func global gluLoadSamplingMatrices "gluLoadSamplingMatrices" sptr, sptr, sptr, sptr
; gluLoadSamplingMatrices nobj, varptr(modelMatrix), varptr(projMatrix), varptr(viewport)
; nobj : GLUnurbs* in/out -> "sptr"
; modelMatrix : FLOAT* -> "sptr"
; projMatrix : FLOAT* -> "sptr"
; viewport : INT* -> "sptr"

#uselib "GLU32.dll"
#func global gluLoadSamplingMatrices "gluLoadSamplingMatrices" int, var, var, var
; gluLoadSamplingMatrices nobj, modelMatrix, projMatrix, viewport
; nobj : GLUnurbs* in/out -> "int"
; modelMatrix : FLOAT* -> "var"
; projMatrix : FLOAT* -> "var"
; viewport : INT* -> "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 gluLoadSamplingMatrices(GLUnurbs* nobj, FLOAT* modelMatrix, FLOAT* projMatrix, INT* viewport)
#uselib "GLU32.dll"
#func global gluLoadSamplingMatrices "gluLoadSamplingMatrices" int, var, var, var
; gluLoadSamplingMatrices nobj, modelMatrix, projMatrix, viewport
; nobj : GLUnurbs* in/out -> "int"
; modelMatrix : FLOAT* -> "var"
; projMatrix : FLOAT* -> "var"
; viewport : INT* -> "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")
	procgluLoadSamplingMatrices = glu32.NewProc("gluLoadSamplingMatrices")
)

// nobj (GLUnurbs* in/out), modelMatrix (FLOAT*), projMatrix (FLOAT*), viewport (INT*)
r1, _, err := procgluLoadSamplingMatrices.Call(
	uintptr(nobj),
	uintptr(modelMatrix),
	uintptr(projMatrix),
	uintptr(viewport),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure gluLoadSamplingMatrices(
  nobj: Pointer;   // GLUnurbs* in/out
  modelMatrix: Pointer;   // FLOAT*
  projMatrix: Pointer;   // FLOAT*
  viewport: Pointer   // INT*
); stdcall;
  external 'GLU32.dll' name 'gluLoadSamplingMatrices';

result := DllCall("GLU32\gluLoadSamplingMatrices"
    , "Ptr", nobj   ; GLUnurbs* in/out
    , "Ptr", modelMatrix   ; FLOAT*
    , "Ptr", projMatrix   ; FLOAT*
    , "Ptr", viewport   ; INT*
    , "Int")   ; return: void

●gluLoadSamplingMatrices(nobj, modelMatrix, projMatrix, viewport) = DLL("GLU32.dll", "int gluLoadSamplingMatrices(void*, void*, void*, void*)")
# 呼び出し: gluLoadSamplingMatrices(nobj, modelMatrix, projMatrix, viewport)
# nobj : GLUnurbs* in/out -> "void*"
# modelMatrix : FLOAT* -> "void*"
# projMatrix : FLOAT* -> "void*"
# viewport : INT* -> "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)。