Wow64GetThreadSelectorEntry

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

BOOL Wow64GetThreadSelectorEntry(
    HANDLE hThread,
    DWORD dwSelector,
    WOW64_LDT_ENTRY* lpSelectorEntry
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function Wow64GetThreadSelectorEntry(
    hThread As IntPtr,   ' HANDLE
    dwSelector As UInteger,   ' DWORD
    lpSelectorEntry As IntPtr   ' WOW64_LDT_ENTRY* out
) As Boolean
End Function

' hThread : HANDLE
' dwSelector : DWORD
' lpSelectorEntry : WOW64_LDT_ENTRY* out
Declare PtrSafe Function Wow64GetThreadSelectorEntry Lib "kernel32" ( _
    ByVal hThread As LongPtr, _
    ByVal dwSelector As Long, _
    ByVal lpSelectorEntry 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

Wow64GetThreadSelectorEntry = ctypes.windll.kernel32.Wow64GetThreadSelectorEntry
Wow64GetThreadSelectorEntry.restype = wintypes.BOOL
Wow64GetThreadSelectorEntry.argtypes = [
    wintypes.HANDLE,  # hThread : HANDLE
    wintypes.DWORD,  # dwSelector : DWORD
    ctypes.c_void_p,  # lpSelectorEntry : WOW64_LDT_ENTRY* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
Wow64GetThreadSelectorEntry = Fiddle::Function.new(
  lib['Wow64GetThreadSelectorEntry'],
  [
    Fiddle::TYPE_VOIDP,  # hThread : HANDLE
    -Fiddle::TYPE_INT,  # dwSelector : DWORD
    Fiddle::TYPE_VOIDP,  # lpSelectorEntry : WOW64_LDT_ENTRY* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn Wow64GetThreadSelectorEntry(
        hThread: *mut core::ffi::c_void,  // HANDLE
        dwSelector: u32,  // DWORD
        lpSelectorEntry: *mut WOW64_LDT_ENTRY  // WOW64_LDT_ENTRY* 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 Wow64GetThreadSelectorEntry(IntPtr hThread, uint dwSelector, IntPtr lpSelectorEntry);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_Wow64GetThreadSelectorEntry' -Namespace Win32 -PassThru
# $api::Wow64GetThreadSelectorEntry(hThread, dwSelector, lpSelectorEntry)

#uselib "KERNEL32.dll"
#func global Wow64GetThreadSelectorEntry "Wow64GetThreadSelectorEntry" sptr, sptr, sptr
; Wow64GetThreadSelectorEntry hThread, dwSelector, varptr(lpSelectorEntry)   ; 戻り値は stat
; hThread : HANDLE -> "sptr"
; dwSelector : DWORD -> "sptr"
; lpSelectorEntry : WOW64_LDT_ENTRY* 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 Wow64GetThreadSelectorEntry "Wow64GetThreadSelectorEntry" sptr, int, var
; res = Wow64GetThreadSelectorEntry(hThread, dwSelector, lpSelectorEntry)
; hThread : HANDLE -> "sptr"
; dwSelector : DWORD -> "int"
; lpSelectorEntry : WOW64_LDT_ENTRY* 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 Wow64GetThreadSelectorEntry(HANDLE hThread, DWORD dwSelector, WOW64_LDT_ENTRY* lpSelectorEntry)
#uselib "KERNEL32.dll"
#cfunc global Wow64GetThreadSelectorEntry "Wow64GetThreadSelectorEntry" intptr, int, var
; res = Wow64GetThreadSelectorEntry(hThread, dwSelector, lpSelectorEntry)
; hThread : HANDLE -> "intptr"
; dwSelector : DWORD -> "int"
; lpSelectorEntry : WOW64_LDT_ENTRY* 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procWow64GetThreadSelectorEntry = kernel32.NewProc("Wow64GetThreadSelectorEntry")
)

// hThread (HANDLE), dwSelector (DWORD), lpSelectorEntry (WOW64_LDT_ENTRY* out)
r1, _, err := procWow64GetThreadSelectorEntry.Call(
	uintptr(hThread),
	uintptr(dwSelector),
	uintptr(lpSelectorEntry),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function Wow64GetThreadSelectorEntry(
  hThread: THandle;   // HANDLE
  dwSelector: DWORD;   // DWORD
  lpSelectorEntry: Pointer   // WOW64_LDT_ENTRY* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'Wow64GetThreadSelectorEntry';

result := DllCall("KERNEL32\Wow64GetThreadSelectorEntry"
    , "Ptr", hThread   ; HANDLE
    , "UInt", dwSelector   ; DWORD
    , "Ptr", lpSelectorEntry   ; WOW64_LDT_ENTRY* out
    , "Int")   ; return: BOOL

●Wow64GetThreadSelectorEntry(hThread, dwSelector, lpSelectorEntry) = DLL("KERNEL32.dll", "bool Wow64GetThreadSelectorEntry(void*, dword, void*)")
# 呼び出し: Wow64GetThreadSelectorEntry(hThread, dwSelector, lpSelectorEntry)
# hThread : HANDLE -> "void*"
# dwSelector : DWORD -> "dword"
# lpSelectorEntry : WOW64_LDT_ENTRY* 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)。