GetSystemTimeAdjustment

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

BOOL GetSystemTimeAdjustment(
    DWORD* lpTimeAdjustment,
    DWORD* lpTimeIncrement,
    BOOL* lpTimeAdjustmentDisabled
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetSystemTimeAdjustment(
    <Out> ByRef lpTimeAdjustment As UInteger,   ' DWORD* out
    <Out> ByRef lpTimeIncrement As UInteger,   ' DWORD* out
    <Out> ByRef lpTimeAdjustmentDisabled As Integer   ' BOOL* out
) As Boolean
End Function

' lpTimeAdjustment : DWORD* out
' lpTimeIncrement : DWORD* out
' lpTimeAdjustmentDisabled : BOOL* out
Declare PtrSafe Function GetSystemTimeAdjustment Lib "kernel32" ( _
    ByRef lpTimeAdjustment As Long, _
    ByRef lpTimeIncrement As Long, _
    ByRef lpTimeAdjustmentDisabled 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

GetSystemTimeAdjustment = ctypes.windll.kernel32.GetSystemTimeAdjustment
GetSystemTimeAdjustment.restype = wintypes.BOOL
GetSystemTimeAdjustment.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # lpTimeAdjustment : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # lpTimeIncrement : DWORD* out
    ctypes.c_void_p,  # lpTimeAdjustmentDisabled : BOOL* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetSystemTimeAdjustment = Fiddle::Function.new(
  lib['GetSystemTimeAdjustment'],
  [
    Fiddle::TYPE_VOIDP,  # lpTimeAdjustment : DWORD* out
    Fiddle::TYPE_VOIDP,  # lpTimeIncrement : DWORD* out
    Fiddle::TYPE_VOIDP,  # lpTimeAdjustmentDisabled : BOOL* out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool GetSystemTimeAdjustment(out uint lpTimeAdjustment, out uint lpTimeIncrement, out int lpTimeAdjustmentDisabled);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetSystemTimeAdjustment' -Namespace Win32 -PassThru
# $api::GetSystemTimeAdjustment(lpTimeAdjustment, lpTimeIncrement, lpTimeAdjustmentDisabled)

#uselib "KERNEL32.dll"
#func global GetSystemTimeAdjustment "GetSystemTimeAdjustment" sptr, sptr, sptr
; GetSystemTimeAdjustment varptr(lpTimeAdjustment), varptr(lpTimeIncrement), lpTimeAdjustmentDisabled   ; 戻り値は stat
; lpTimeAdjustment : DWORD* out -> "sptr"
; lpTimeIncrement : DWORD* out -> "sptr"
; lpTimeAdjustmentDisabled : BOOL* 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 "KERNEL32.dll"
#cfunc global GetSystemTimeAdjustment "GetSystemTimeAdjustment" var, var, int
; res = GetSystemTimeAdjustment(lpTimeAdjustment, lpTimeIncrement, lpTimeAdjustmentDisabled)
; lpTimeAdjustment : DWORD* out -> "var"
; lpTimeIncrement : DWORD* out -> "var"
; lpTimeAdjustmentDisabled : BOOL* out -> "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。

; BOOL GetSystemTimeAdjustment(DWORD* lpTimeAdjustment, DWORD* lpTimeIncrement, BOOL* lpTimeAdjustmentDisabled)
#uselib "KERNEL32.dll"
#cfunc global GetSystemTimeAdjustment "GetSystemTimeAdjustment" var, var, int
; res = GetSystemTimeAdjustment(lpTimeAdjustment, lpTimeIncrement, lpTimeAdjustmentDisabled)
; lpTimeAdjustment : DWORD* out -> "var"
; lpTimeIncrement : DWORD* out -> "var"
; lpTimeAdjustmentDisabled : BOOL* out -> "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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetSystemTimeAdjustment = kernel32.NewProc("GetSystemTimeAdjustment")
)

// lpTimeAdjustment (DWORD* out), lpTimeIncrement (DWORD* out), lpTimeAdjustmentDisabled (BOOL* out)
r1, _, err := procGetSystemTimeAdjustment.Call(
	uintptr(lpTimeAdjustment),
	uintptr(lpTimeIncrement),
	uintptr(lpTimeAdjustmentDisabled),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetSystemTimeAdjustment(
  lpTimeAdjustment: Pointer;   // DWORD* out
  lpTimeIncrement: Pointer;   // DWORD* out
  lpTimeAdjustmentDisabled: Pointer   // BOOL* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetSystemTimeAdjustment';

result := DllCall("KERNEL32\GetSystemTimeAdjustment"
    , "Ptr", lpTimeAdjustment   ; DWORD* out
    , "Ptr", lpTimeIncrement   ; DWORD* out
    , "Ptr", lpTimeAdjustmentDisabled   ; BOOL* out
    , "Int")   ; return: BOOL

●GetSystemTimeAdjustment(lpTimeAdjustment, lpTimeIncrement, lpTimeAdjustmentDisabled) = DLL("KERNEL32.dll", "bool GetSystemTimeAdjustment(void*, void*, void*)")
# 呼び出し: GetSystemTimeAdjustment(lpTimeAdjustment, lpTimeIncrement, lpTimeAdjustmentDisabled)
# lpTimeAdjustment : DWORD* out -> "void*"
# lpTimeIncrement : DWORD* out -> "void*"
# lpTimeAdjustmentDisabled : BOOL* 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)。