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GetSystemLeapSecondInformation

関数

うるう秒の有効状態と関連フラグを取得する。

DLLKERNEL32.dll呼出規約winapi

シグネチャ

// KERNEL32.dll
#include <windows.h>

BOOL GetSystemLeapSecondInformation(
    BOOL* Enabled,
    DWORD* Flags
);

パラメーター

名前	型	方向
Enabled	BOOL*	out
Flags	DWORD*	out

戻り値の型: BOOL

各言語での呼び出し定義

// KERNEL32.dll
#include <windows.h>

BOOL GetSystemLeapSecondInformation(
    BOOL* Enabled,
    DWORD* Flags
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", ExactSpelling = true)]
static extern bool GetSystemLeapSecondInformation(
    out int Enabled,   // BOOL* out
    out uint Flags   // DWORD* out
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function GetSystemLeapSecondInformation(
    <Out> ByRef Enabled As Integer,   ' BOOL* out
    <Out> ByRef Flags As UInteger   ' DWORD* out
) As Boolean
End Function

' Enabled : BOOL* out
' Flags : DWORD* out
Declare PtrSafe Function GetSystemLeapSecondInformation Lib "kernel32" ( _
    ByRef Enabled As Long, _
    ByRef Flags 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

GetSystemLeapSecondInformation = ctypes.windll.kernel32.GetSystemLeapSecondInformation
GetSystemLeapSecondInformation.restype = wintypes.BOOL
GetSystemLeapSecondInformation.argtypes = [
    ctypes.c_void_p,  # Enabled : BOOL* out
    ctypes.POINTER(wintypes.DWORD),  # Flags : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetSystemLeapSecondInformation = Fiddle::Function.new(
  lib['GetSystemLeapSecondInformation'],
  [
    Fiddle::TYPE_VOIDP,  # Enabled : BOOL* out
    Fiddle::TYPE_VOIDP,  # Flags : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetSystemLeapSecondInformation(
        Enabled: *mut i32,  // BOOL* out
        Flags: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll")]
public static extern bool GetSystemLeapSecondInformation(out int Enabled, out uint Flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetSystemLeapSecondInformation' -Namespace Win32 -PassThru
# $api::GetSystemLeapSecondInformation(Enabled, Flags)

#uselib "KERNEL32.dll"
#func global GetSystemLeapSecondInformation "GetSystemLeapSecondInformation" sptr, sptr
; GetSystemLeapSecondInformation Enabled, varptr(Flags)   ; 戻り値は stat
; Enabled : BOOL* out -> "sptr"
; Flags : DWORD* 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。

出力引数:

#uselib "KERNEL32.dll"
#cfunc global GetSystemLeapSecondInformation "GetSystemLeapSecondInformation" int, var
; res = GetSystemLeapSecondInformation(Enabled, Flags)
; Enabled : BOOL* out -> "int"
; Flags : DWORD* 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。#uselib "KERNEL32.dll"
#cfunc global GetSystemLeapSecondInformation "GetSystemLeapSecondInformation" int, sptr
; res = GetSystemLeapSecondInformation(Enabled, varptr(Flags))
; Enabled : BOOL* out -> "int"
; Flags : DWORD* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL GetSystemLeapSecondInformation(BOOL* Enabled, DWORD* Flags)
#uselib "KERNEL32.dll"
#cfunc global GetSystemLeapSecondInformation "GetSystemLeapSecondInformation" int, var
; res = GetSystemLeapSecondInformation(Enabled, Flags)
; Enabled : BOOL* out -> "int"
; Flags : DWORD* 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。; BOOL GetSystemLeapSecondInformation(BOOL* Enabled, DWORD* Flags)
#uselib "KERNEL32.dll"
#cfunc global GetSystemLeapSecondInformation "GetSystemLeapSecondInformation" int, intptr
; res = GetSystemLeapSecondInformation(Enabled, varptr(Flags))
; Enabled : BOOL* out -> "int"
; Flags : DWORD* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetSystemLeapSecondInformation = kernel32.NewProc("GetSystemLeapSecondInformation")
)

// Enabled (BOOL* out), Flags (DWORD* out)
r1, _, err := procGetSystemLeapSecondInformation.Call(
	uintptr(Enabled),
	uintptr(Flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetSystemLeapSecondInformation(
  Enabled: Pointer;   // BOOL* out
  Flags: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetSystemLeapSecondInformation';

result := DllCall("KERNEL32\GetSystemLeapSecondInformation"
    , "Ptr", Enabled   ; BOOL* out
    , "Ptr", Flags   ; DWORD* out
    , "Int")   ; return: BOOL

●GetSystemLeapSecondInformation(Enabled, Flags) = DLL("KERNEL32.dll", "bool GetSystemLeapSecondInformation(void*, void*)")
# 呼び出し: GetSystemLeapSecondInformation(Enabled, Flags)
# Enabled : BOOL* out -> "void*"
# Flags : DWORD* 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)。