gluTessBeginPolygon

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

void gluTessBeginPolygon(
    GLUtesselator* tess,
    void* polygon_data
);

<DllImport("GLU32.dll", ExactSpelling:=True)>
Public Shared Sub gluTessBeginPolygon(
    ByRef tess As IntPtr,   ' GLUtesselator* in/out
    polygon_data As IntPtr   ' void* in/out
)
End Sub

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

import ctypes
from ctypes import wintypes

gluTessBeginPolygon = ctypes.windll.glu32.gluTessBeginPolygon
gluTessBeginPolygon.restype = None
gluTessBeginPolygon.argtypes = [
    ctypes.c_void_p,  # tess : GLUtesselator* in/out
    ctypes.POINTER(None),  # polygon_data : void* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GLU32.dll')
gluTessBeginPolygon = Fiddle::Function.new(
  lib['gluTessBeginPolygon'],
  [
    Fiddle::TYPE_VOIDP,  # tess : GLUtesselator* in/out
    Fiddle::TYPE_VOIDP,  # polygon_data : void* in/out
  ],
  Fiddle::TYPE_VOID)

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

$sig = @"
[DllImport("GLU32.dll")]
public static extern void gluTessBeginPolygon(ref IntPtr tess, IntPtr polygon_data);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GLU32_gluTessBeginPolygon' -Namespace Win32 -PassThru
# $api::gluTessBeginPolygon(tess, polygon_data)

#uselib "GLU32.dll"
#func global gluTessBeginPolygon "gluTessBeginPolygon" sptr, sptr
; gluTessBeginPolygon tess, polygon_data
; tess : GLUtesselator* in/out -> "sptr"
; polygon_data : void* in/out -> "sptr"

#uselib "GLU32.dll"
#func global gluTessBeginPolygon "gluTessBeginPolygon" int, sptr
; gluTessBeginPolygon tess, polygon_data
; tess : GLUtesselator* in/out -> "int"
; polygon_data : void* in/out -> "sptr"

; void gluTessBeginPolygon(GLUtesselator* tess, void* polygon_data)
#uselib "GLU32.dll"
#func global gluTessBeginPolygon "gluTessBeginPolygon" int, intptr
; gluTessBeginPolygon tess, polygon_data
; tess : GLUtesselator* in/out -> "int"
; polygon_data : void* in/out -> "intptr"

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

var (
	glu32 = windows.NewLazySystemDLL("GLU32.dll")
	procgluTessBeginPolygon = glu32.NewProc("gluTessBeginPolygon")
)

// tess (GLUtesselator* in/out), polygon_data (void* in/out)
r1, _, err := procgluTessBeginPolygon.Call(
	uintptr(tess),
	uintptr(polygon_data),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure gluTessBeginPolygon(
  tess: Pointer;   // GLUtesselator* in/out
  polygon_data: Pointer   // void* in/out
); stdcall;
  external 'GLU32.dll' name 'gluTessBeginPolygon';

result := DllCall("GLU32\gluTessBeginPolygon"
    , "Ptr", tess   ; GLUtesselator* in/out
    , "Ptr", polygon_data   ; void* in/out
    , "Int")   ; return: void

●gluTessBeginPolygon(tess, polygon_data) = DLL("GLU32.dll", "int gluTessBeginPolygon(void*, void*)")
# 呼び出し: gluTessBeginPolygon(tess, polygon_data)
# tess : GLUtesselator* in/out -> "void*"
# polygon_data : void* 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)。