GetWindowInfo

// USER32.dll
#include <windows.h>

BOOL GetWindowInfo(
    HWND hwnd,
    WINDOWINFO* pwi
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetWindowInfo(
    hwnd As IntPtr,   ' HWND
    pwi As IntPtr   ' WINDOWINFO* in/out
) As Boolean
End Function

' hwnd : HWND
' pwi : WINDOWINFO* in/out
Declare PtrSafe Function GetWindowInfo Lib "user32" ( _
    ByVal hwnd As LongPtr, _
    ByVal pwi 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

GetWindowInfo = ctypes.windll.user32.GetWindowInfo
GetWindowInfo.restype = wintypes.BOOL
GetWindowInfo.argtypes = [
    wintypes.HANDLE,  # hwnd : HWND
    ctypes.c_void_p,  # pwi : WINDOWINFO* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetWindowInfo = Fiddle::Function.new(
  lib['GetWindowInfo'],
  [
    Fiddle::TYPE_VOIDP,  # hwnd : HWND
    Fiddle::TYPE_VOIDP,  # pwi : WINDOWINFO* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn GetWindowInfo(
        hwnd: *mut core::ffi::c_void,  // HWND
        pwi: *mut WINDOWINFO  // WINDOWINFO* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true)]
public static extern bool GetWindowInfo(IntPtr hwnd, IntPtr pwi);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetWindowInfo' -Namespace Win32 -PassThru
# $api::GetWindowInfo(hwnd, pwi)

#uselib "USER32.dll"
#func global GetWindowInfo "GetWindowInfo" sptr, sptr
; GetWindowInfo hwnd, varptr(pwi)   ; 戻り値は stat
; hwnd : HWND -> "sptr"
; pwi : WINDOWINFO* in/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 "USER32.dll"
#cfunc global GetWindowInfo "GetWindowInfo" sptr, var
; res = GetWindowInfo(hwnd, pwi)
; hwnd : HWND -> "sptr"
; pwi : WINDOWINFO* in/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 GetWindowInfo(HWND hwnd, WINDOWINFO* pwi)
#uselib "USER32.dll"
#cfunc global GetWindowInfo "GetWindowInfo" intptr, var
; res = GetWindowInfo(hwnd, pwi)
; hwnd : HWND -> "intptr"
; pwi : WINDOWINFO* in/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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetWindowInfo = user32.NewProc("GetWindowInfo")
)

// hwnd (HWND), pwi (WINDOWINFO* in/out)
r1, _, err := procGetWindowInfo.Call(
	uintptr(hwnd),
	uintptr(pwi),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetWindowInfo(
  hwnd: THandle;   // HWND
  pwi: Pointer   // WINDOWINFO* in/out
): BOOL; stdcall;
  external 'USER32.dll' name 'GetWindowInfo';

result := DllCall("USER32\GetWindowInfo"
    , "Ptr", hwnd   ; HWND
    , "Ptr", pwi   ; WINDOWINFO* in/out
    , "Int")   ; return: BOOL

●GetWindowInfo(hwnd, pwi) = DLL("USER32.dll", "bool GetWindowInfo(void*, void*)")
# 呼び出し: GetWindowInfo(hwnd, pwi)
# hwnd : HWND -> "void*"
# pwi : WINDOWINFO* in/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)。