GdipCreatePen2

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

Status GdipCreatePen2(
    GpBrush* brush,
    FLOAT width,
    Unit unit,
    GpPen** pen
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipCreatePen2(
    brush As IntPtr,   ' GpBrush* in/out
    width As Single,   ' FLOAT
    unit As Integer,   ' Unit
    pen As IntPtr   ' GpPen** in/out
) As Integer
End Function

' brush : GpBrush* in/out
' width : FLOAT
' unit : Unit
' pen : GpPen** in/out
Declare PtrSafe Function GdipCreatePen2 Lib "gdiplus" ( _
    ByVal brush As LongPtr, _
    ByVal width As Single, _
    ByVal unit As Long, _
    ByVal pen As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GdipCreatePen2 = ctypes.windll.gdiplus.GdipCreatePen2
GdipCreatePen2.restype = ctypes.c_int
GdipCreatePen2.argtypes = [
    ctypes.c_void_p,  # brush : GpBrush* in/out
    ctypes.c_float,  # width : FLOAT
    ctypes.c_int,  # unit : Unit
    ctypes.c_void_p,  # pen : GpPen** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipCreatePen2 = Fiddle::Function.new(
  lib['GdipCreatePen2'],
  [
    Fiddle::TYPE_VOIDP,  # brush : GpBrush* in/out
    Fiddle::TYPE_FLOAT,  # width : FLOAT
    Fiddle::TYPE_INT,  # unit : Unit
    Fiddle::TYPE_VOIDP,  # pen : GpPen** in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipCreatePen2(
        brush: *mut GpBrush,  // GpBrush* in/out
        width: f32,  // FLOAT
        unit: i32,  // Unit
        pen: *mut *mut GpPen  // GpPen** in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipCreatePen2(IntPtr brush, float width, int unit, IntPtr pen);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipCreatePen2' -Namespace Win32 -PassThru
# $api::GdipCreatePen2(brush, width, unit, pen)

#uselib "gdiplus.dll"
#func global GdipCreatePen2 "GdipCreatePen2" sptr, float, sptr, sptr
; GdipCreatePen2 varptr(brush), width, unit, varptr(pen)   ; 戻り値は stat
; brush : GpBrush* in/out -> "sptr"
; width : FLOAT -> "float"
; unit : Unit -> "sptr"
; pen : GpPen** in/out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "gdiplus.dll"
#cfunc global GdipCreatePen2 "GdipCreatePen2" var, float, int, var
; res = GdipCreatePen2(brush, width, unit, pen)
; brush : GpBrush* in/out -> "var"
; width : FLOAT -> "float"
; unit : Unit -> "int"
; pen : GpPen** 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。

; Status GdipCreatePen2(GpBrush* brush, FLOAT width, Unit unit, GpPen** pen)
#uselib "gdiplus.dll"
#cfunc global GdipCreatePen2 "GdipCreatePen2" var, float, int, var
; res = GdipCreatePen2(brush, width, unit, pen)
; brush : GpBrush* in/out -> "var"
; width : FLOAT -> "float"
; unit : Unit -> "int"
; pen : GpPen** 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 (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipCreatePen2 = gdiplus.NewProc("GdipCreatePen2")
)

// brush (GpBrush* in/out), width (FLOAT), unit (Unit), pen (GpPen** in/out)
r1, _, err := procGdipCreatePen2.Call(
	uintptr(brush),
	uintptr(math.Float32bits(width)),
	uintptr(unit),
	uintptr(pen),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status
// 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。

function GdipCreatePen2(
  brush: Pointer;   // GpBrush* in/out
  width: Single;   // FLOAT
  unit: Integer;   // Unit
  pen: Pointer   // GpPen** in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreatePen2';

result := DllCall("gdiplus\GdipCreatePen2"
    , "Ptr", brush   ; GpBrush* in/out
    , "Float", width   ; FLOAT
    , "Int", unit   ; Unit
    , "Ptr", pen   ; GpPen** in/out
    , "Int")   ; return: Status

●GdipCreatePen2(brush, width, unit, pen) = DLL("gdiplus.dll", "int GdipCreatePen2(void*, float, int, void*)")
# 呼び出し: GdipCreatePen2(brush, width, unit, pen)
# brush : GpBrush* in/out -> "void*"
# width : FLOAT -> "float"
# unit : Unit -> "int"
# pen : GpPen** 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)。