GdipSetClipHrgn

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

Status GdipSetClipHrgn(
    GpGraphics* graphics,
    HRGN hRgn,
    CombineMode combineMode
);

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

' graphics : GpGraphics* in/out
' hRgn : HRGN
' combineMode : CombineMode
Declare PtrSafe Function GdipSetClipHrgn Lib "gdiplus" ( _
    ByVal graphics As LongPtr, _
    ByVal hRgn As LongPtr, _
    ByVal combineMode As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GdipSetClipHrgn = ctypes.windll.gdiplus.GdipSetClipHrgn
GdipSetClipHrgn.restype = ctypes.c_int
GdipSetClipHrgn.argtypes = [
    ctypes.c_void_p,  # graphics : GpGraphics* in/out
    wintypes.HANDLE,  # hRgn : HRGN
    ctypes.c_int,  # combineMode : CombineMode
]

require 'fiddle'
require 'fiddle/import'

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

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

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

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

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

function GdipSetClipHrgn(
  graphics: Pointer;   // GpGraphics* in/out
  hRgn: THandle;   // HRGN
  combineMode: Integer   // CombineMode
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipSetClipHrgn';

result := DllCall("gdiplus\GdipSetClipHrgn"
    , "Ptr", graphics   ; GpGraphics* in/out
    , "Ptr", hRgn   ; HRGN
    , "Int", combineMode   ; CombineMode
    , "Int")   ; return: Status

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