EqualRgn

関数

二つの領域が等しいかどうかを判定する。

DLLGDI32.dll呼出規約winapi対応OSWindows 2000 以降

シグネチャ

// GDI32.dll
#include <windows.h>

BOOL EqualRgn(
    HRGN hrgn1,
    HRGN hrgn2
);

パラメーター

名前	型	方向
hrgn1	HRGN	in
hrgn2	HRGN	in

戻り値の型: BOOL

各言語での呼び出し定義

// GDI32.dll
#include <windows.h>

BOOL EqualRgn(
    HRGN hrgn1,
    HRGN hrgn2
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll", ExactSpelling = true)]
static extern bool EqualRgn(
    IntPtr hrgn1,   // HRGN
    IntPtr hrgn2   // HRGN
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function EqualRgn(
    hrgn1 As IntPtr,   ' HRGN
    hrgn2 As IntPtr   ' HRGN
) As Boolean
End Function

' hrgn1 : HRGN
' hrgn2 : HRGN
Declare PtrSafe Function EqualRgn Lib "gdi32" ( _
    ByVal hrgn1 As LongPtr, _
    ByVal hrgn2 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

EqualRgn = ctypes.windll.gdi32.EqualRgn
EqualRgn.restype = wintypes.BOOL
EqualRgn.argtypes = [
    wintypes.HANDLE,  # hrgn1 : HRGN
    wintypes.HANDLE,  # hrgn2 : HRGN
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
EqualRgn = Fiddle::Function.new(
  lib['EqualRgn'],
  [
    Fiddle::TYPE_VOIDP,  # hrgn1 : HRGN
    Fiddle::TYPE_VOIDP,  # hrgn2 : HRGN
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn EqualRgn(
        hrgn1: *mut core::ffi::c_void,  // HRGN
        hrgn2: *mut core::ffi::c_void  // HRGN
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll")]
public static extern bool EqualRgn(IntPtr hrgn1, IntPtr hrgn2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_EqualRgn' -Namespace Win32 -PassThru
# $api::EqualRgn(hrgn1, hrgn2)

#uselib "GDI32.dll"
#func global EqualRgn "EqualRgn" sptr, sptr
; EqualRgn hrgn1, hrgn2   ; 戻り値は stat
; hrgn1 : HRGN -> "sptr"
; hrgn2 : HRGN -> "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 "GDI32.dll"
#cfunc global EqualRgn "EqualRgn" sptr, sptr
; res = EqualRgn(hrgn1, hrgn2)
; hrgn1 : HRGN -> "sptr"
; hrgn2 : HRGN -> "sptr"

; BOOL EqualRgn(HRGN hrgn1, HRGN hrgn2)
#uselib "GDI32.dll"
#cfunc global EqualRgn "EqualRgn" intptr, intptr
; res = EqualRgn(hrgn1, hrgn2)
; hrgn1 : HRGN -> "intptr"
; hrgn2 : HRGN -> "intptr"

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

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procEqualRgn = gdi32.NewProc("EqualRgn")
)

// hrgn1 (HRGN), hrgn2 (HRGN)
r1, _, err := procEqualRgn.Call(
	uintptr(hrgn1),
	uintptr(hrgn2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EqualRgn(
  hrgn1: THandle;   // HRGN
  hrgn2: THandle   // HRGN
): BOOL; stdcall;
  external 'GDI32.dll' name 'EqualRgn';

result := DllCall("GDI32\EqualRgn"
    , "Ptr", hrgn1   ; HRGN
    , "Ptr", hrgn2   ; HRGN
    , "Int")   ; return: BOOL

●EqualRgn(hrgn1, hrgn2) = DLL("GDI32.dll", "bool EqualRgn(void*, void*)")
# 呼び出し: EqualRgn(hrgn1, hrgn2)
# hrgn1 : HRGN -> "void*"
# hrgn2 : HRGN -> "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)。