PrintWindow

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

BOOL PrintWindow(
    HWND hwnd,
    HDC hdcBlt,
    PRINT_WINDOW_FLAGS nFlags
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function PrintWindow(
    hwnd As IntPtr,   ' HWND
    hdcBlt As IntPtr,   ' HDC
    nFlags As UInteger   ' PRINT_WINDOW_FLAGS
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hwnd : HWND
' hdcBlt : HDC
' nFlags : PRINT_WINDOW_FLAGS
Declare PtrSafe Function PrintWindow Lib "user32" ( _
    ByVal hwnd As LongPtr, _
    ByVal hdcBlt As LongPtr, _
    ByVal nFlags 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

PrintWindow = ctypes.windll.user32.PrintWindow
PrintWindow.restype = wintypes.BOOL
PrintWindow.argtypes = [
    wintypes.HANDLE,  # hwnd : HWND
    wintypes.HANDLE,  # hdcBlt : HDC
    wintypes.DWORD,  # nFlags : PRINT_WINDOW_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
PrintWindow = Fiddle::Function.new(
  lib['PrintWindow'],
  [
    Fiddle::TYPE_VOIDP,  # hwnd : HWND
    Fiddle::TYPE_VOIDP,  # hdcBlt : HDC
    -Fiddle::TYPE_INT,  # nFlags : PRINT_WINDOW_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn PrintWindow(
        hwnd: *mut core::ffi::c_void,  // HWND
        hdcBlt: *mut core::ffi::c_void,  // HDC
        nFlags: u32  // PRINT_WINDOW_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll")]
public static extern bool PrintWindow(IntPtr hwnd, IntPtr hdcBlt, uint nFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_PrintWindow' -Namespace Win32 -PassThru
# $api::PrintWindow(hwnd, hdcBlt, nFlags)

#uselib "USER32.dll"
#func global PrintWindow "PrintWindow" sptr, sptr, sptr
; PrintWindow hwnd, hdcBlt, nFlags   ; 戻り値は stat
; hwnd : HWND -> "sptr"
; hdcBlt : HDC -> "sptr"
; nFlags : PRINT_WINDOW_FLAGS -> "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 PrintWindow "PrintWindow" sptr, sptr, int
; res = PrintWindow(hwnd, hdcBlt, nFlags)
; hwnd : HWND -> "sptr"
; hdcBlt : HDC -> "sptr"
; nFlags : PRINT_WINDOW_FLAGS -> "int"

; BOOL PrintWindow(HWND hwnd, HDC hdcBlt, PRINT_WINDOW_FLAGS nFlags)
#uselib "USER32.dll"
#cfunc global PrintWindow "PrintWindow" intptr, intptr, int
; res = PrintWindow(hwnd, hdcBlt, nFlags)
; hwnd : HWND -> "intptr"
; hdcBlt : HDC -> "intptr"
; nFlags : PRINT_WINDOW_FLAGS -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procPrintWindow = user32.NewProc("PrintWindow")
)

// hwnd (HWND), hdcBlt (HDC), nFlags (PRINT_WINDOW_FLAGS)
r1, _, err := procPrintWindow.Call(
	uintptr(hwnd),
	uintptr(hdcBlt),
	uintptr(nFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function PrintWindow(
  hwnd: THandle;   // HWND
  hdcBlt: THandle;   // HDC
  nFlags: DWORD   // PRINT_WINDOW_FLAGS
): BOOL; stdcall;
  external 'USER32.dll' name 'PrintWindow';

result := DllCall("USER32\PrintWindow"
    , "Ptr", hwnd   ; HWND
    , "Ptr", hdcBlt   ; HDC
    , "UInt", nFlags   ; PRINT_WINDOW_FLAGS
    , "Int")   ; return: BOOL

●PrintWindow(hwnd, hdcBlt, nFlags) = DLL("USER32.dll", "bool PrintWindow(void*, void*, dword)")
# 呼び出し: PrintWindow(hwnd, hdcBlt, nFlags)
# hwnd : HWND -> "void*"
# hdcBlt : HDC -> "void*"
# nFlags : PRINT_WINDOW_FLAGS -> "dword"
# 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)。

const std = @import("std");

extern "user32" fn PrintWindow(
    hwnd: ?*anyopaque, // HWND
    hdcBlt: ?*anyopaque, // HDC
    nFlags: u32 // PRINT_WINDOW_FLAGS
) callconv(std.os.windows.WINAPI) i32;

proc PrintWindow(
    hwnd: pointer,  # HWND
    hdcBlt: pointer,  # HDC
    nFlags: uint32  # PRINT_WINDOW_FLAGS
): int32 {.importc: "PrintWindow", stdcall, dynlib: "USER32.dll".}

pragma(lib, "user32");
extern(Windows)
int PrintWindow(
    void* hwnd,   // HWND
    void* hdcBlt,   // HDC
    uint nFlags   // PRINT_WINDOW_FLAGS
);

ccall((:PrintWindow, "USER32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{Cvoid}, UInt32),
      hwnd, hdcBlt, nFlags)
# hwnd : HWND -> Ptr{Cvoid}
# hdcBlt : HDC -> Ptr{Cvoid}
# nFlags : PRINT_WINDOW_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t PrintWindow(
    void* hwnd,
    void* hdcBlt,
    uint32_t nFlags);
]]
local user32 = ffi.load("user32")
-- user32.PrintWindow(hwnd, hdcBlt, nFlags)
-- hwnd : HWND
-- hdcBlt : HDC
-- nFlags : PRINT_WINDOW_FLAGS
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('USER32.dll');
const PrintWindow = lib.func('__stdcall', 'PrintWindow', 'int32_t', ['void *', 'void *', 'uint32_t']);
// PrintWindow(hwnd, hdcBlt, nFlags)
// hwnd : HWND -> 'void *'
// hdcBlt : HDC -> 'void *'
// nFlags : PRINT_WINDOW_FLAGS -> 'uint32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("USER32.dll", {
  PrintWindow: { parameters: ["pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.PrintWindow(hwnd, hdcBlt, nFlags)
// hwnd : HWND -> "pointer"
// hdcBlt : HDC -> "pointer"
// nFlags : PRINT_WINDOW_FLAGS -> "u32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t PrintWindow(
    void* hwnd,
    void* hdcBlt,
    uint32_t nFlags);
C, "USER32.dll");
// $ffi->PrintWindow(hwnd, hdcBlt, nFlags);
// hwnd : HWND
// hdcBlt : HDC
// nFlags : PRINT_WINDOW_FLAGS
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface User32 extends StdCallLibrary {
    User32 INSTANCE = Native.load("user32", User32.class);
    boolean PrintWindow(
        Pointer hwnd,   // HWND
        Pointer hdcBlt,   // HDC
        int nFlags   // PRINT_WINDOW_FLAGS
    );
}

@[Link("user32")]
lib LibUSER32
  fun PrintWindow = PrintWindow(
    hwnd : Void*,   # HWND
    hdcBlt : Void*,   # HDC
    nFlags : UInt32   # PRINT_WINDOW_FLAGS
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef PrintWindowNative = Int32 Function(Pointer<Void>, Pointer<Void>, Uint32);
typedef PrintWindowDart = int Function(Pointer<Void>, Pointer<Void>, int);
final PrintWindow = DynamicLibrary.open('USER32.dll')
    .lookupFunction<PrintWindowNative, PrintWindowDart>('PrintWindow');
// hwnd : HWND -> Pointer<Void>
// hdcBlt : HDC -> Pointer<Void>
// nFlags : PRINT_WINDOW_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function PrintWindow(
  hwnd: THandle;   // HWND
  hdcBlt: THandle;   // HDC
  nFlags: DWORD   // PRINT_WINDOW_FLAGS
): BOOL; stdcall;
  external 'USER32.dll' name 'PrintWindow';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "PrintWindow"
  c_PrintWindow :: Ptr () -> Ptr () -> Word32 -> IO CInt
-- hwnd : HWND -> Ptr ()
-- hdcBlt : HDC -> Ptr ()
-- nFlags : PRINT_WINDOW_FLAGS -> Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let printwindow =
  foreign "PrintWindow"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* hwnd : HWND -> (ptr void) *)
(* hdcBlt : HDC -> (ptr void) *)
(* nFlags : PRINT_WINDOW_FLAGS -> uint32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library user32 (t "USER32.dll"))
(cffi:use-foreign-library user32)

(cffi:defcfun ("PrintWindow" print-window :convention :stdcall) :int32
  (hwnd :pointer)   ; HWND
  (hdc-blt :pointer)   ; HDC
  (n-flags :uint32))   ; PRINT_WINDOW_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $PrintWindow = Win32::API::More->new('USER32',
    'BOOL PrintWindow(HANDLE hwnd, HANDLE hdcBlt, DWORD nFlags)');
# my $ret = $PrintWindow->Call($hwnd, $hdcBlt, $nFlags);
# hwnd : HWND -> HANDLE
# hdcBlt : HDC -> HANDLE
# nFlags : PRINT_WINDOW_FLAGS -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。