GdipCreateRegionHrgn

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

Status GdipCreateRegionHrgn(
    HRGN hRgn,
    GpRegion** region
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipCreateRegionHrgn(
    hRgn As IntPtr,   ' HRGN
    region As IntPtr   ' GpRegion** in/out
) As Integer
End Function

' hRgn : HRGN
' region : GpRegion** in/out
Declare PtrSafe Function GdipCreateRegionHrgn Lib "gdiplus" ( _
    ByVal hRgn As LongPtr, _
    ByVal region 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

GdipCreateRegionHrgn = ctypes.windll.gdiplus.GdipCreateRegionHrgn
GdipCreateRegionHrgn.restype = ctypes.c_int
GdipCreateRegionHrgn.argtypes = [
    wintypes.HANDLE,  # hRgn : HRGN
    ctypes.c_void_p,  # region : GpRegion** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipCreateRegionHrgn = Fiddle::Function.new(
  lib['GdipCreateRegionHrgn'],
  [
    Fiddle::TYPE_VOIDP,  # hRgn : HRGN
    Fiddle::TYPE_VOIDP,  # region : GpRegion** in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipCreateRegionHrgn(
        hRgn: *mut core::ffi::c_void,  // HRGN
        region: *mut *mut GpRegion  // GpRegion** in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipCreateRegionHrgn(IntPtr hRgn, IntPtr region);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipCreateRegionHrgn' -Namespace Win32 -PassThru
# $api::GdipCreateRegionHrgn(hRgn, region)

#uselib "gdiplus.dll"
#func global GdipCreateRegionHrgn "GdipCreateRegionHrgn" sptr, sptr
; GdipCreateRegionHrgn hRgn, varptr(region)   ; 戻り値は stat
; hRgn : HRGN -> "sptr"
; region : GpRegion** 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 GdipCreateRegionHrgn "GdipCreateRegionHrgn" sptr, var
; res = GdipCreateRegionHrgn(hRgn, region)
; hRgn : HRGN -> "sptr"
; region : GpRegion** 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 GdipCreateRegionHrgn(HRGN hRgn, GpRegion** region)
#uselib "gdiplus.dll"
#cfunc global GdipCreateRegionHrgn "GdipCreateRegionHrgn" intptr, var
; res = GdipCreateRegionHrgn(hRgn, region)
; hRgn : HRGN -> "intptr"
; region : GpRegion** 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 (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipCreateRegionHrgn = gdiplus.NewProc("GdipCreateRegionHrgn")
)

// hRgn (HRGN), region (GpRegion** in/out)
r1, _, err := procGdipCreateRegionHrgn.Call(
	uintptr(hRgn),
	uintptr(region),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipCreateRegionHrgn(
  hRgn: THandle;   // HRGN
  region: Pointer   // GpRegion** in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreateRegionHrgn';

result := DllCall("gdiplus\GdipCreateRegionHrgn"
    , "Ptr", hRgn   ; HRGN
    , "Ptr", region   ; GpRegion** in/out
    , "Int")   ; return: Status

●GdipCreateRegionHrgn(hRgn, region) = DLL("gdiplus.dll", "int GdipCreateRegionHrgn(void*, void*)")
# 呼び出し: GdipCreateRegionHrgn(hRgn, region)
# hRgn : HRGN -> "void*"
# region : GpRegion** 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)。