EnumDynamicTimeZoneInformation

// ADVAPI32.dll
#include <windows.h>

DWORD EnumDynamicTimeZoneInformation(
    DWORD dwIndex,
    DYNAMIC_TIME_ZONE_INFORMATION* lpTimeZoneInformation
);

<DllImport("ADVAPI32.dll", ExactSpelling:=True)>
Public Shared Function EnumDynamicTimeZoneInformation(
    dwIndex As UInteger,   ' DWORD
    lpTimeZoneInformation As IntPtr   ' DYNAMIC_TIME_ZONE_INFORMATION* out
) As UInteger
End Function

' dwIndex : DWORD
' lpTimeZoneInformation : DYNAMIC_TIME_ZONE_INFORMATION* out
Declare PtrSafe Function EnumDynamicTimeZoneInformation Lib "advapi32" ( _
    ByVal dwIndex As Long, _
    ByVal lpTimeZoneInformation 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

EnumDynamicTimeZoneInformation = ctypes.windll.advapi32.EnumDynamicTimeZoneInformation
EnumDynamicTimeZoneInformation.restype = wintypes.DWORD
EnumDynamicTimeZoneInformation.argtypes = [
    wintypes.DWORD,  # dwIndex : DWORD
    ctypes.c_void_p,  # lpTimeZoneInformation : DYNAMIC_TIME_ZONE_INFORMATION* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
EnumDynamicTimeZoneInformation = Fiddle::Function.new(
  lib['EnumDynamicTimeZoneInformation'],
  [
    -Fiddle::TYPE_INT,  # dwIndex : DWORD
    Fiddle::TYPE_VOIDP,  # lpTimeZoneInformation : DYNAMIC_TIME_ZONE_INFORMATION* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn EnumDynamicTimeZoneInformation(
        dwIndex: u32,  // DWORD
        lpTimeZoneInformation: *mut DYNAMIC_TIME_ZONE_INFORMATION  // DYNAMIC_TIME_ZONE_INFORMATION* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll")]
public static extern uint EnumDynamicTimeZoneInformation(uint dwIndex, IntPtr lpTimeZoneInformation);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_EnumDynamicTimeZoneInformation' -Namespace Win32 -PassThru
# $api::EnumDynamicTimeZoneInformation(dwIndex, lpTimeZoneInformation)

#uselib "ADVAPI32.dll"
#func global EnumDynamicTimeZoneInformation "EnumDynamicTimeZoneInformation" sptr, sptr
; EnumDynamicTimeZoneInformation dwIndex, varptr(lpTimeZoneInformation)   ; 戻り値は stat
; dwIndex : DWORD -> "sptr"
; lpTimeZoneInformation : DYNAMIC_TIME_ZONE_INFORMATION* 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 "ADVAPI32.dll"
#cfunc global EnumDynamicTimeZoneInformation "EnumDynamicTimeZoneInformation" int, var
; res = EnumDynamicTimeZoneInformation(dwIndex, lpTimeZoneInformation)
; dwIndex : DWORD -> "int"
; lpTimeZoneInformation : DYNAMIC_TIME_ZONE_INFORMATION* 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。

; DWORD EnumDynamicTimeZoneInformation(DWORD dwIndex, DYNAMIC_TIME_ZONE_INFORMATION* lpTimeZoneInformation)
#uselib "ADVAPI32.dll"
#cfunc global EnumDynamicTimeZoneInformation "EnumDynamicTimeZoneInformation" int, var
; res = EnumDynamicTimeZoneInformation(dwIndex, lpTimeZoneInformation)
; dwIndex : DWORD -> "int"
; lpTimeZoneInformation : DYNAMIC_TIME_ZONE_INFORMATION* 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。

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procEnumDynamicTimeZoneInformation = advapi32.NewProc("EnumDynamicTimeZoneInformation")
)

// dwIndex (DWORD), lpTimeZoneInformation (DYNAMIC_TIME_ZONE_INFORMATION* out)
r1, _, err := procEnumDynamicTimeZoneInformation.Call(
	uintptr(dwIndex),
	uintptr(lpTimeZoneInformation),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function EnumDynamicTimeZoneInformation(
  dwIndex: DWORD;   // DWORD
  lpTimeZoneInformation: Pointer   // DYNAMIC_TIME_ZONE_INFORMATION* out
): DWORD; stdcall;
  external 'ADVAPI32.dll' name 'EnumDynamicTimeZoneInformation';

result := DllCall("ADVAPI32\EnumDynamicTimeZoneInformation"
    , "UInt", dwIndex   ; DWORD
    , "Ptr", lpTimeZoneInformation   ; DYNAMIC_TIME_ZONE_INFORMATION* out
    , "UInt")   ; return: DWORD

●EnumDynamicTimeZoneInformation(dwIndex, lpTimeZoneInformation) = DLL("ADVAPI32.dll", "dword EnumDynamicTimeZoneInformation(dword, void*)")
# 呼び出し: EnumDynamicTimeZoneInformation(dwIndex, lpTimeZoneInformation)
# dwIndex : DWORD -> "dword"
# lpTimeZoneInformation : DYNAMIC_TIME_ZONE_INFORMATION* 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)。