GdipGetRegionHRgn

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

Status GdipGetRegionHRgn(
    GpRegion* region,
    GpGraphics* graphics,
    HRGN* hRgn
);

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

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

GdipGetRegionHRgn = ctypes.windll.gdiplus.GdipGetRegionHRgn
GdipGetRegionHRgn.restype = ctypes.c_int
GdipGetRegionHRgn.argtypes = [
    ctypes.c_void_p,  # region : GpRegion* in/out
    ctypes.c_void_p,  # graphics : GpGraphics* in/out
    ctypes.c_void_p,  # hRgn : HRGN* in/out
]

require 'fiddle'
require 'fiddle/import'

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

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

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

#uselib "gdiplus.dll"
#func global GdipGetRegionHRgn "GdipGetRegionHRgn" sptr, sptr, sptr
; GdipGetRegionHRgn varptr(region), varptr(graphics), hRgn   ; 戻り値は stat
; region : GpRegion* in/out -> "sptr"
; graphics : GpGraphics* in/out -> "sptr"
; hRgn : HRGN* 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 GdipGetRegionHRgn "GdipGetRegionHRgn" var, var, sptr
; res = GdipGetRegionHRgn(region, graphics, hRgn)
; region : GpRegion* in/out -> "var"
; graphics : GpGraphics* in/out -> "var"
; hRgn : HRGN* in/out -> "sptr"
; ※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 GdipGetRegionHRgn(GpRegion* region, GpGraphics* graphics, HRGN* hRgn)
#uselib "gdiplus.dll"
#cfunc global GdipGetRegionHRgn "GdipGetRegionHRgn" var, var, intptr
; res = GdipGetRegionHRgn(region, graphics, hRgn)
; region : GpRegion* in/out -> "var"
; graphics : GpGraphics* in/out -> "var"
; hRgn : HRGN* in/out -> "intptr"
; ※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")
	procGdipGetRegionHRgn = gdiplus.NewProc("GdipGetRegionHRgn")
)

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

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

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

●GdipGetRegionHRgn(region, graphics, hRgn) = DLL("gdiplus.dll", "int GdipGetRegionHRgn(void*, void*, void*)")
# 呼び出し: GdipGetRegionHRgn(region, graphics, hRgn)
# region : GpRegion* in/out -> "void*"
# graphics : GpGraphics* in/out -> "void*"
# hRgn : HRGN* 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)。