glMapGrid1f

// OPENGL32.dll
#include <windows.h>

void glMapGrid1f(
    INT un,
    FLOAT u1,
    FLOAT u2
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glMapGrid1f(
    un As Integer,   ' INT
    u1 As Single,   ' FLOAT
    u2 As Single   ' FLOAT
)
End Sub

' un : INT
' u1 : FLOAT
' u2 : FLOAT
Declare PtrSafe Sub glMapGrid1f Lib "opengl32" ( _
    ByVal un As Long, _
    ByVal u1 As Single, _
    ByVal u2 As Single)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glMapGrid1f = ctypes.windll.opengl32.glMapGrid1f
glMapGrid1f.restype = None
glMapGrid1f.argtypes = [
    ctypes.c_int,  # un : INT
    ctypes.c_float,  # u1 : FLOAT
    ctypes.c_float,  # u2 : FLOAT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glMapGrid1f = Fiddle::Function.new(
  lib['glMapGrid1f'],
  [
    Fiddle::TYPE_INT,  # un : INT
    Fiddle::TYPE_FLOAT,  # u1 : FLOAT
    Fiddle::TYPE_FLOAT,  # u2 : FLOAT
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glMapGrid1f(
        un: i32,  // INT
        u1: f32,  // FLOAT
        u2: f32  // FLOAT
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glMapGrid1f(int un, float u1, float u2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glMapGrid1f' -Namespace Win32 -PassThru
# $api::glMapGrid1f(un, u1, u2)

#uselib "OPENGL32.dll"
#func global glMapGrid1f "glMapGrid1f" sptr, float, float
; glMapGrid1f un, u1, u2
; un : INT -> "sptr"
; u1 : FLOAT -> "float"
; u2 : FLOAT -> "float"

#uselib "OPENGL32.dll"
#func global glMapGrid1f "glMapGrid1f" int, float, float
; glMapGrid1f un, u1, u2
; un : INT -> "int"
; u1 : FLOAT -> "float"
; u2 : FLOAT -> "float"

; void glMapGrid1f(INT un, FLOAT u1, FLOAT u2)
#uselib "OPENGL32.dll"
#func global glMapGrid1f "glMapGrid1f" int, float, float
; glMapGrid1f un, u1, u2
; un : INT -> "int"
; u1 : FLOAT -> "float"
; u2 : FLOAT -> "float"

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

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglMapGrid1f = opengl32.NewProc("glMapGrid1f")
)

// un (INT), u1 (FLOAT), u2 (FLOAT)
r1, _, err := procglMapGrid1f.Call(
	uintptr(un),
	uintptr(math.Float32bits(u1)),
	uintptr(math.Float32bits(u2)),
)
_ = 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 glMapGrid1f(
  un: Integer;   // INT
  u1: Single;   // FLOAT
  u2: Single   // FLOAT
); stdcall;
  external 'OPENGL32.dll' name 'glMapGrid1f';

result := DllCall("OPENGL32\glMapGrid1f"
    , "Int", un   ; INT
    , "Float", u1   ; FLOAT
    , "Float", u2   ; FLOAT
    , "Int")   ; return: void

●glMapGrid1f(un, u1, u2) = DLL("OPENGL32.dll", "int glMapGrid1f(int, float, float)")
# 呼び出し: glMapGrid1f(un, u1, u2)
# un : INT -> "int"
# u1 : FLOAT -> "float"
# u2 : FLOAT -> "float"
# 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)。