런처 클립보드 붙여넣기 포커스 복원 경로 통일

- 클립보드 히스토리, 클립보드 변환, 순차 붙여넣기 실행 경로에 공통 포커스 복원 helper를 추가했습니다. - 이전 활성 창 복원, 최소 대기, Ctrl+V 주입 순서를 하나로 맞춰 포커스 누락으로 내용이 원래 창에 들어가지 않던 문제를 완화했습니다. - 관련 변경 이력을 README와 DEVELOPMENT 문서에 반영했습니다. 검증: - dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\verify\ -p:IntermediateOutputPath=obj\verify\ - 경고 0 / 오류 0
2026-04-05 20:19:44 +09:00
parent db957039d4
commit 1778b855c5
6 changed files with 156 additions and 181 deletions
--- a/src/AxCopilot/Handlers/ClipboardHandler.cs
+++ b/src/AxCopilot/Handlers/ClipboardHandler.cs
@@ -1,5 +1,4 @@
-using System.Diagnostics;
-using System.Runtime.InteropServices;
+using System.Diagnostics;
 using System.Text;
 using System.Text.Json;
 using System.Text.RegularExpressions;
@@ -26,7 +25,6 @@ public class ClipboardHandler : IActionHandler
    {
        var items = new List<LauncherItem>();

-        // 빌트인 변환 목록
        var builtins = GetBuiltinTransformers()
            .Where(t => string.IsNullOrEmpty(query) ||
                        t.Key.Contains(query, StringComparison.OrdinalIgnoreCase));
@@ -34,14 +32,12 @@ public class ClipboardHandler : IActionHandler
        foreach (var t in builtins)
            items.Add(new LauncherItem(t.Key, t.Description ?? "", null, t, Symbol: Symbols.Clipboard));

-        // 사용자 정의 변환
        var custom = _settings.Settings.ClipboardTransformers
            .Where(t => string.IsNullOrEmpty(query) ||
                        t.Key.Contains(query, StringComparison.OrdinalIgnoreCase))
            .Select(t => new LauncherItem(t.Key, t.Description ?? t.Type, null, t, Symbol: Symbols.Clipboard));

        items.AddRange(custom);
-
        return Task.FromResult<IEnumerable<LauncherItem>>(items);
    }

@@ -49,7 +45,6 @@ public class ClipboardHandler : IActionHandler
    {
        if (item.Data is not ClipboardTransformer transformer) return;

-        // 클립보드에서 텍스트 읽기 (STA 스레드 필요)
        string? input = null;
        Application.Current.Dispatcher.Invoke(() =>
        {
@@ -61,17 +56,12 @@ public class ClipboardHandler : IActionHandler
        string? result = await TransformAsync(transformer, input, ct);
        if (result == null) return;

-        // 결과를 클립보드에 쓰고 이전 활성 창으로 포커스 복원 후 붙여넣기
        Application.Current.Dispatcher.Invoke(() => Clipboard.SetText(result));

-        // 런처 호출 전 활성 창으로 포커스 복원
        var prevHwnd = WindowTracker.PreviousWindow;
-        if (prevHwnd != IntPtr.Zero)
-            SetForegroundWindow(prevHwnd);
-
-        await Task.Delay(120, ct);
-        System.Windows.Forms.SendKeys.SendWait("^v");
+        if (prevHwnd == IntPtr.Zero) return;

+        await ForegroundPasteHelper.PasteClipboardAsync(prevHwnd, ct, initialDelayMs: 220);
        LogService.Info($"클립보드 변환: '{transformer.Key}' 적용");
    }

@@ -81,7 +71,6 @@ public class ClipboardHandler : IActionHandler
        {
            return t.Type switch
            {
-                // ReDoS 방지: 사용자 정의 패턴에 타임아웃 적용
                "regex" when t.Pattern != null && t.Replace != null =>
                    Regex.Replace(input, t.Pattern, t.Replace, RegexOptions.None,
                        TimeSpan.FromMilliseconds(t.Timeout > 0 ? t.Timeout : 5000)),
@@ -120,8 +109,6 @@ public class ClipboardHandler : IActionHandler
        return await proc.StandardOutput.ReadToEndAsync(cts.Token);
    }

-    // ─── 빌트인 변환 ─────────────────────────────────────────────────────────
-
    internal static string? ExecuteBuiltin(string key, string input)
    {
        return key switch
@@ -149,7 +136,10 @@ public class ClipboardHandler : IActionHandler
            var doc = JsonDocument.Parse(input);
            return JsonSerializer.Serialize(doc, new JsonSerializerOptions { WriteIndented = true });
        }
-        catch { return input; }
+        catch
+        {
+            return input;
+        }
    }

    private static string? TryParseTimestamp(string input)
@@ -159,6 +149,7 @@ public class ClipboardHandler : IActionHandler
            var dt = DateTimeOffset.FromUnixTimeSeconds(ts).LocalDateTime;
            return dt.ToString("yyyy-MM-dd HH:mm:ss");
        }
+
        return null;
    }

@@ -166,15 +157,13 @@ public class ClipboardHandler : IActionHandler
    {
        if (DateTime.TryParse(input.Trim(), out var dt))
            return new DateTimeOffset(dt).ToUnixTimeSeconds().ToString();
+
        return null;
    }

    private static string StripMarkdown(string input) =>
        Regex.Replace(input, @"(\*\*|__)(.*?)\1|(\*|_)(.*?)\3|`(.+?)`|#{1,6}\s*", "$2$4$5");

-    [DllImport("user32.dll")]
-    private static extern bool SetForegroundWindow(IntPtr hWnd);
-
    private static IEnumerable<ClipboardTransformer> GetBuiltinTransformers() =>
    [
        new() { Key = "$json",  Type = "builtin", Description = "JSON 포맷팅 (들여쓰기 적용)" },
--- a/src/AxCopilot/Handlers/ClipboardHistoryHandler.cs
+++ b/src/AxCopilot/Handlers/ClipboardHistoryHandler.cs
@@ -1,4 +1,3 @@
-using System.Runtime.InteropServices;
 using System.Windows;
 using AxCopilot.SDK;
 using AxCopilot.Services;
@@ -28,7 +27,6 @@ public class ClipboardHistoryHandler : IActionHandler
        _historyService = historyService;
    }

-    // 카테고리 필터 프리픽스: #url, #코드, #경로
    private static readonly Dictionary<string, string> CategoryFilters = new(StringComparer.OrdinalIgnoreCase)
    {
        { "url", "URL" }, { "코드", "코드" }, { "code", "코드" },
@@ -52,7 +50,6 @@ public class ClipboardHistoryHandler : IActionHandler

        var q = query.Trim().ToLowerInvariant();

-        // 카테고리 필터 감지 (예: #url, #핀)
        string? catFilter = null;
        foreach (var (prefix, cat) in CategoryFilters)
        {
@@ -66,17 +63,14 @@ public class ClipboardHistoryHandler : IActionHandler

        var filtered = history.AsEnumerable();

-        // 카테고리 필터 적용
        if (catFilter == "핀")
            filtered = filtered.Where(e => e.IsPinned);
        else if (catFilter != null)
            filtered = filtered.Where(e => e.Category == catFilter);

-        // 텍스트 검색
        if (!string.IsNullOrEmpty(q))
            filtered = filtered.Where(e => e.Preview.ToLowerInvariant().Contains(q));

-        // 핀 항목을 상단에 배치
        var sorted = filtered
            .OrderByDescending(e => e.IsPinned)
            .ThenByDescending(e => e.CopiedAt);
@@ -113,14 +107,13 @@ public class ClipboardHistoryHandler : IActionHandler
        try
        {
            _historyService.SuppressNextCapture();
-            _historyService.PromoteEntry(entry); // 사용 시각 갱신 + 목록 맨 위로
+            _historyService.PromoteEntry(entry);

            if (!entry.IsText && entry.Image != null)
            {
-                // 원본 이미지가 있으면 원본 해상도로 클립보드 복사
                var originalImg = ClipboardHistoryService.LoadOriginalImage(entry.OriginalImagePath);
                Clipboard.SetImage(originalImg ?? entry.Image);
-                return; // 이미지는 붙여넣기 시뮬레이션 없이 클립보드만 설정
+                return;
            }

            if (string.IsNullOrEmpty(entry.Text)) return;
@@ -129,25 +122,7 @@ public class ClipboardHistoryHandler : IActionHandler
            var prevWindow = WindowTracker.PreviousWindow;
            if (prevWindow == IntPtr.Zero) return;

-            // ── 이전 창 포커스 복원 후 Ctrl+V ────────────────────────────────
-            // 런처 창이 완전히 숨겨지고 이전 창이 포커스를 회복할 시간 확보
-            await Task.Delay(300, ct);
-
-            // AttachThreadInput으로 포그라운드 전환 권한 획득 후 SetForegroundWindow 호출
-            // (Alt 트릭 대비: Alt 키 주입 없이 안정적으로 전환, 대상 앱 메뉴 트리거 방지)
-            var targetThread = GetWindowThreadProcessId(prevWindow, out _);
-            var currentThread = GetCurrentThreadId();
-            AttachThreadInput(currentThread, targetThread, true);
-            SetForegroundWindow(prevWindow);
-            AttachThreadInput(currentThread, targetThread, false);
-
-            // 포커스 전환이 완전히 반영될 때까지 대기
-            await Task.Delay(100, ct);
-
-            // SendInput으로 Ctrl+V 주입
-            // Win32 INPUT 구조체: type(4) + 패딩(4) + union(32) = 40 bytes on x64
-            // KEYBDINPUT.dwExtraInfo = ULONG_PTR → union 8바이트 정렬 필요 → offset 8에서 시작
-            SendCtrlV();
+            await ForegroundPasteHelper.PasteClipboardAsync(prevWindow, ct, initialDelayMs: 260);
        }
        catch (OperationCanceledException) { }
        catch (Exception ex)
@@ -155,62 +130,4 @@ public class ClipboardHistoryHandler : IActionHandler
            LogService.Warn($"클립보드 히스토리 붙여넣기 실패: {ex.Message}");
        }
    }
-
-    private static void SendCtrlV()
-    {
-        const uint INPUT_KEYBOARD = 1;
-        const uint KEYEVENTF_KEYUP = 0x0002;
-        const ushort VK_CONTROL = 0x11;
-        const ushort VK_V = 0x56;
-
-        var inputs = new INPUT[4];
-
-        // Ctrl 누름
-        inputs[0].Type = INPUT_KEYBOARD;
-        inputs[0].ki.wVk = VK_CONTROL;
-
-        // V 누름
-        inputs[1].Type = INPUT_KEYBOARD;
-        inputs[1].ki.wVk = VK_V;
-
-        // V 뗌
-        inputs[2].Type = INPUT_KEYBOARD;
-        inputs[2].ki.wVk = VK_V;
-        inputs[2].ki.dwFlags = KEYEVENTF_KEYUP;
-
-        // Ctrl 뗌
-        inputs[3].Type = INPUT_KEYBOARD;
-        inputs[3].ki.wVk = VK_CONTROL;
-        inputs[3].ki.dwFlags = KEYEVENTF_KEYUP;
-
-        SendInput((uint)inputs.Length, inputs, Marshal.SizeOf<INPUT>());
-    }
-
-    // ─── P/Invoke ──────────────────────────────────────────────────────────
-
-    // Win32 INPUT 구조체 — x64에서 40바이트
-    // type(4) + 패딩(4) + union은 offset 8에서 시작 (MOUSEINPUT 32바이트가 최대)
-    [StructLayout(LayoutKind.Explicit, Size = 40)]
-    private struct INPUT
-    {
-        [FieldOffset(0)] public uint Type;
-        [FieldOffset(8)] public KEYBDINPUT ki;
-    }
-
-    // KEYBDINPUT: 2+2+4+4 = 12, dwExtraInfo(IntPtr)는 8바이트 정렬 → 패딩 포함 24바이트
-    [StructLayout(LayoutKind.Sequential)]
-    private struct KEYBDINPUT
-    {
-        public ushort wVk;
-        public ushort wScan;
-        public uint dwFlags;
-        public uint time;
-        public IntPtr dwExtraInfo;
-    }
-
-    [DllImport("user32.dll")] private static extern bool SetForegroundWindow(IntPtr hWnd);
-    [DllImport("user32.dll")] private static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
-    [DllImport("user32.dll")] private static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, [MarshalAs(UnmanagedType.Bool)] bool fAttach);
-    [DllImport("kernel32.dll")] private static extern uint GetCurrentThreadId();
-    [DllImport("user32.dll")] private static extern uint SendInput(uint nInputs, [MarshalAs(UnmanagedType.LPArray)] INPUT[] pInputs, int cbSize);
 }
--- a/src/AxCopilot/Handlers/PasteHandler.cs
+++ b/src/AxCopilot/Handlers/PasteHandler.cs
@@ -1,4 +1,3 @@
-using System.Runtime.InteropServices;
 using System.Windows;
 using AxCopilot.SDK;
 using AxCopilot.Services;
@@ -7,13 +6,8 @@ using AxCopilot.Themes;
 namespace AxCopilot.Handlers;

 /// <summary>
-/// L27-6: 클립보드 순차 붙여넣기 핸들러. "paste" 프리픽스로 사용합니다.
-///
-/// 예: paste              → 번호 매긴 클립보드 히스토리 목록
-///     paste 3 1 5        → 3번→1번→5번 항목을 순서대로 붙여넣기
-///     paste all          → 전체 히스토리를 순서대로 붙여넣기
-/// Enter → 이전 창에서 순서대로 Ctrl+V 실행.
-/// Raycast "Paste Sequentially" 대응.
+/// paste prefix 핸들러: 클립보드 히스토리를 순서대로 붙여넣습니다.
+/// 예: paste / paste 3 1 5 / paste all
 /// </summary>
 public class PasteHandler : IActionHandler
 {
@@ -34,7 +28,7 @@ public class PasteHandler : IActionHandler

    public Task<IEnumerable<LauncherItem>> GetItemsAsync(string query, CancellationToken ct)
    {
-        var q     = query.Trim();
+        var q = query.Trim();
        var items = new List<LauncherItem>();
        var history = _history.History.Where(e => e.IsText && !string.IsNullOrEmpty(e.Text)).ToList();

@@ -47,7 +41,6 @@ public class PasteHandler : IActionHandler
            return Task.FromResult<IEnumerable<LauncherItem>>(items);
        }

-        // ── 번호 시퀀스 파싱 ──────────────────────────────────────────────────
        if (!string.IsNullOrWhiteSpace(q) && q != "all")
        {
            var nums = q.Split(' ', StringSplitOptions.RemoveEmptyEntries);
@@ -60,16 +53,15 @@ public class PasteHandler : IActionHandler

            if (indices.Count > 0)
            {
-                var preview = string.Join(" → ", indices.Select(i => $"#{i}"));
+                var preview = string.Join(" · ", indices.Select(i => $"#{i}"));
                var texts = indices.Select(i => history[i - 1].Text ?? "").ToList();
                var totalLen = texts.Sum(t => t.Length);

                items.Add(new LauncherItem(
                    $"순차 붙여넣기: {preview}",
-                    $"{indices.Count}개 항목 · {totalLen}자 · Enter: 순서대로 붙여넣기",
+                    $"{indices.Count}개 항목 · 총 {totalLen}자 · Enter로 순서대로 붙여넣기",
                    null, ("seq", texts), Symbol: Symbols.ClipPaste));

-                // 미리보기
                for (int i = 0; i < indices.Count; i++)
                {
                    var entry = history[indices[i] - 1];
@@ -83,21 +75,19 @@ public class PasteHandler : IActionHandler
            }
        }

-        // ── all 명령 ──────────────────────────────────────────────────────────
        if (q.Equals("all", StringComparison.OrdinalIgnoreCase))
        {
            var texts = history.Take(20).Select(e => e.Text ?? "").ToList();
            items.Add(new LauncherItem(
                $"전체 순차 붙여넣기 ({texts.Count}개)",
-                $"Enter: 최근 {texts.Count}개 항목을 순서대로 붙여넣기",
+                $"Enter로 최근 {texts.Count}개 항목을 순서대로 붙여넣기",
                null, ("seq", texts), Symbol: Symbols.ClipPaste));
            return Task.FromResult<IEnumerable<LauncherItem>>(items);
        }

-        // ── 빈 쿼리 → 번호 매긴 목록 ─────────────────────────────────────────
        items.Add(new LauncherItem(
-            "순차 붙여넣기 — 번호를 입력하세요",
-            "예: paste 3 1 5 → 3번→1번→5번 순서로 붙여넣기 · paste all → 전체",
+            "순차 붙여넣기 번호를 입력하세요",
+            "예: paste 3 1 5 · paste all",
            null, null, Symbol: Symbols.ClipPaste));

        for (int i = 0; i < Math.Min(history.Count, 15); i++)
@@ -117,12 +107,10 @@ public class PasteHandler : IActionHandler
    {
        if (item.Data is ("single", string singleText))
        {
-            // 단일 항목 붙여넣기
            await PasteTexts([singleText], ct);
        }
        else if (item.Data is ("seq", List<string> texts))
        {
-            // 순차 붙여넣기
            await PasteTexts(texts, ct);
        }
    }
@@ -138,16 +126,9 @@ public class PasteHandler : IActionHandler

            _history.SuppressNextCapture();

-            // 이전 창 포커스 복원 대기
-            await Task.Delay(300, ct);
-
-            var targetThread = GetWindowThreadProcessId(prevWindow, out _);
-            var currentThread = GetCurrentThreadId();
-            AttachThreadInput(currentThread, targetThread, true);
-            SetForegroundWindow(prevWindow);
-            AttachThreadInput(currentThread, targetThread, false);
-
-            await Task.Delay(100, ct);
+            var restored = await ForegroundPasteHelper.RestoreWindowAsync(prevWindow, ct, initialDelayMs: 260);
+            if (!restored)
+                return;

            foreach (var text in texts)
            {
@@ -157,8 +138,8 @@ public class PasteHandler : IActionHandler
                Application.Current.Dispatcher.Invoke(() => Clipboard.SetText(text));
                await Task.Delay(50, ct);

-                SendCtrlV();
-                await Task.Delay(200, ct); // 항목 간 간격
+                await ForegroundPasteHelper.PasteClipboardAsync(prevWindow, ct, initialDelayMs: 0);
+                await Task.Delay(200, ct);
            }

            NotificationService.Notify("paste", $"{texts.Count}개 항목 붙여넣기 완료");
@@ -172,46 +153,4 @@ public class PasteHandler : IActionHandler

    private static string Truncate(string s, int max)
        => s.Length <= max ? s : s[..max] + "…";
-
-    // ─── Ctrl+V 주입 (ClipboardHistoryHandler와 동일 패턴) ────────────────────
-
-    private static void SendCtrlV()
-    {
-        const uint INPUT_KEYBOARD = 1;
-        const uint KEYEVENTF_KEYUP = 0x0002;
-        const ushort VK_CONTROL = 0x11;
-        const ushort VK_V = 0x56;
-
-        var inputs = new INPUT[4];
-        inputs[0] = new INPUT { Type = INPUT_KEYBOARD, ki = new KEYBDINPUT { wVk = VK_CONTROL } };
-        inputs[1] = new INPUT { Type = INPUT_KEYBOARD, ki = new KEYBDINPUT { wVk = VK_V } };
-        inputs[2] = new INPUT { Type = INPUT_KEYBOARD, ki = new KEYBDINPUT { wVk = VK_V, dwFlags = KEYEVENTF_KEYUP } };
-        inputs[3] = new INPUT { Type = INPUT_KEYBOARD, ki = new KEYBDINPUT { wVk = VK_CONTROL, dwFlags = KEYEVENTF_KEYUP } };
-        SendInput((uint)inputs.Length, inputs, Marshal.SizeOf<INPUT>());
-    }
-
-    // ─── P/Invoke ──────────────────────────────────────────────────────────────
-
-    [StructLayout(LayoutKind.Explicit, Size = 40)]
-    private struct INPUT
-    {
-        [FieldOffset(0)] public uint Type;
-        [FieldOffset(8)] public KEYBDINPUT ki;
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    private struct KEYBDINPUT
-    {
-        public ushort wVk;
-        public ushort wScan;
-        public uint dwFlags;
-        public uint time;
-        public IntPtr dwExtraInfo;
-    }
-
-    [DllImport("user32.dll")] private static extern bool SetForegroundWindow(IntPtr hWnd);
-    [DllImport("user32.dll")] private static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
-    [DllImport("user32.dll")] private static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, [MarshalAs(UnmanagedType.Bool)] bool fAttach);
-    [DllImport("kernel32.dll")] private static extern uint GetCurrentThreadId();
-    [DllImport("user32.dll")] private static extern uint SendInput(uint nInputs, [MarshalAs(UnmanagedType.LPArray)] INPUT[] pInputs, int cbSize);
 }
--- a/src/AxCopilot/Services/ForegroundPasteHelper.cs
+++ b/src/AxCopilot/Services/ForegroundPasteHelper.cs
@@ -0,0 +1,126 @@
+using System.Runtime.InteropServices;
+
+namespace AxCopilot.Services;
+
+internal static class ForegroundPasteHelper
+{
+    private const int SW_RESTORE = 9;
+    private const uint INPUT_KEYBOARD = 1;
+    private const uint KEYEVENTF_KEYUP = 0x0002;
+    private const ushort VK_CONTROL = 0x11;
+    private const ushort VK_V = 0x56;
+
+    public static async Task<bool> RestoreWindowAsync(
+        IntPtr hwnd,
+        CancellationToken ct,
+        int initialDelayMs = 220,
+        int settleDelayMs = 60,
+        int maxAttempts = 4)
+    {
+        if (hwnd == IntPtr.Zero || !IsWindow(hwnd))
+            return false;
+
+        await Task.Delay(initialDelayMs, ct);
+
+        if (IsIconic(hwnd))
+            ShowWindow(hwnd, SW_RESTORE);
+
+        for (var attempt = 0; attempt < maxAttempts; attempt++)
+        {
+            uint currentThread = GetCurrentThreadId();
+            uint targetThread = GetWindowThreadProcessId(hwnd, out _);
+            var foreground = GetForegroundWindow();
+            uint foregroundThread = foreground != IntPtr.Zero
+                ? GetWindowThreadProcessId(foreground, out _)
+                : 0;
+
+            var attachedTarget = false;
+            var attachedForeground = false;
+
+            try
+            {
+                if (targetThread != 0 && targetThread != currentThread)
+                {
+                    AttachThreadInput(currentThread, targetThread, true);
+                    attachedTarget = true;
+                }
+
+                if (foregroundThread != 0 && foregroundThread != currentThread && foregroundThread != targetThread)
+                {
+                    AttachThreadInput(currentThread, foregroundThread, true);
+                    attachedForeground = true;
+                }
+
+                BringWindowToTop(hwnd);
+                SetForegroundWindow(hwnd);
+            }
+            finally
+            {
+                if (attachedForeground)
+                    AttachThreadInput(currentThread, foregroundThread, false);
+
+                if (attachedTarget)
+                    AttachThreadInput(currentThread, targetThread, false);
+            }
+
+            await Task.Delay(settleDelayMs, ct);
+
+            if (GetForegroundWindow() == hwnd)
+                return true;
+        }
+
+        return GetForegroundWindow() == hwnd;
+    }
+
+    public static async Task<bool> PasteClipboardAsync(
+        IntPtr hwnd,
+        CancellationToken ct,
+        int initialDelayMs = 220)
+    {
+        var restored = await RestoreWindowAsync(hwnd, ct, initialDelayMs);
+        if (!restored)
+            return false;
+
+        await Task.Delay(40, ct);
+        SendCtrlV();
+        return true;
+    }
+
+    private static void SendCtrlV()
+    {
+        var inputs = new INPUT[4];
+        inputs[0] = new INPUT { Type = INPUT_KEYBOARD, Ki = new KEYBDINPUT { wVk = VK_CONTROL } };
+        inputs[1] = new INPUT { Type = INPUT_KEYBOARD, Ki = new KEYBDINPUT { wVk = VK_V } };
+        inputs[2] = new INPUT { Type = INPUT_KEYBOARD, Ki = new KEYBDINPUT { wVk = VK_V, dwFlags = KEYEVENTF_KEYUP } };
+        inputs[3] = new INPUT { Type = INPUT_KEYBOARD, Ki = new KEYBDINPUT { wVk = VK_CONTROL, dwFlags = KEYEVENTF_KEYUP } };
+        SendInput((uint)inputs.Length, inputs, Marshal.SizeOf<INPUT>());
+    }
+
+    [StructLayout(LayoutKind.Explicit, Size = 40)]
+    private struct INPUT
+    {
+        [FieldOffset(0)] public uint Type;
+        [FieldOffset(8)] public KEYBDINPUT Ki;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    private struct KEYBDINPUT
+    {
+        public ushort wVk;
+        public ushort wScan;
+        public uint dwFlags;
+        public uint time;
+        public IntPtr dwExtraInfo;
+    }
+
+    [DllImport("user32.dll")] private static extern bool SetForegroundWindow(IntPtr hWnd);
+    [DllImport("user32.dll")] private static extern bool BringWindowToTop(IntPtr hWnd);
+    [DllImport("user32.dll")] private static extern IntPtr GetForegroundWindow();
+    [DllImport("user32.dll")] private static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint processId);
+    [DllImport("user32.dll")] private static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, [MarshalAs(UnmanagedType.Bool)] bool fAttach);
+    [DllImport("user32.dll")] private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
+    [DllImport("user32.dll")] private static extern bool IsWindow(IntPtr hWnd);
+    [DllImport("user32.dll")] private static extern bool IsIconic(IntPtr hWnd);
+    [DllImport("kernel32.dll")] private static extern uint GetCurrentThreadId();
+    [DllImport("user32.dll")] private static extern uint SendInput(uint nInputs, [MarshalAs(UnmanagedType.LPArray)] INPUT[] pInputs, int cbSize);
+}