feat: 引入 CloudSync 核心能力并新增 Avalonia 桌面端与发布脚本
- 后端：新增 CloudSync 认证/权限/端点/服务与 DTO - 数据：新增用户/会话/安全策略实体与 EF Core migrations - 前端：新增云同步设置 UI、客户端与本地存储；Vite 支持 maui 构建输出到 wwwroot - 桌面端：新增 Avalonia 项目、内置 WebServer、托盘与 Windows 全局热键 - 发布/构建：新增 Windows/Linux 发布脚本与统一入口；调整 MAUI 资源与安装包配置 - 文档：同步更新 README/docs 与协作规则
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ShaoHua
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using System;
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using System.Collections.Concurrent;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Threading;
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namespace Hua.Todo.Avalonia.Services.Platforms;
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/// <summary>
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/// Windows 平台全局热键服务实现。
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/// 通过 <c>RegisterHotKey</c> 将热键注册到专用线程的消息队列中，避免依赖窗口句柄与 WndProc Hook。
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/// </summary>
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public sealed class WindowsGlobalHotKeyService : IGlobalHotKeyService, IDisposable
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{
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private const int HotKeyId = 9000;
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private const uint WmHotKey = 0x0312;
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private const uint WmQuit = 0x0012;
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private const uint WmAppExecute = 0x8001;
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public const uint ModAlt = 0x0001;
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public const uint ModControl = 0x0002;
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public const uint ModShift = 0x0004;
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public const uint ModWin = 0x0008;
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private readonly ConcurrentDictionary<int, Action> _actions = new();
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private int _actionId;
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private Thread? _thread;
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private uint _threadId;
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private ManualResetEventSlim? _threadStarted;
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private Action? _callback;
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private bool _isRegistered;
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private uint _currentModifiers;
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private uint _currentKey;
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private bool _isDisposed;
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/// <inheritdoc />
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public bool IsSupported => OperatingSystem.IsWindows();
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/// <inheritdoc />
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public void RegisterHotKey(string modifiers, string key, Action callback)
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{
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if (!IsSupported) return;
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_callback = callback;
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_currentModifiers = ParseModifiers(modifiers);
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_currentKey = ParseKey(key);
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StartThreadIfNeeded();
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InvokeOnHotKeyThread(() =>
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{
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UnregisterHotKeyInternal();
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if (_currentKey == 0)
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{
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return;
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}
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if (RegisterHotKey(IntPtr.Zero, HotKeyId, _currentModifiers, _currentKey))
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{
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_isRegistered = true;
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}
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else
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{
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Debug.WriteLine("[WindowsGlobalHotKeyService] Failed to register hotkey.");
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}
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});
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}
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/// <inheritdoc />
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public void UnregisterHotKey()
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{
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if (!IsSupported) return;
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StartThreadIfNeeded();
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InvokeOnHotKeyThread(UnregisterHotKeyInternal);
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}
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/// <inheritdoc />
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public void UpdateHotKey(string modifiers, string key)
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{
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if (_callback == null) return;
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RegisterHotKey(modifiers, key, _callback);
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}
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private void UnregisterHotKeyInternal()
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{
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if (_isRegistered)
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{
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UnregisterHotKey(IntPtr.Zero, HotKeyId);
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_isRegistered = false;
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}
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}
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private void StartThreadIfNeeded()
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{
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if (_thread != null) return;
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_threadStarted = new ManualResetEventSlim(false);
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_thread = new Thread(MessageLoop)
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{
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IsBackground = true,
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Name = "Hua.Todo HotKey Thread"
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};
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if (OperatingSystem.IsWindows())
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{
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_thread.SetApartmentState(ApartmentState.STA);
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}
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_thread.Start();
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_threadStarted.Wait();
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}
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private void MessageLoop()
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{
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_threadId = GetCurrentThreadId();
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_threadStarted?.Set();
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while (GetMessage(out var msg, IntPtr.Zero, 0, 0) != 0)
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{
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if (msg.message == WmHotKey && msg.wParam == (UIntPtr)HotKeyId)
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{
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try
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{
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_callback?.Invoke();
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}
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catch (Exception ex)
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{
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Debug.WriteLine($"[WindowsGlobalHotKeyService] Hotkey callback failed: {ex}");
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}
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continue;
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}
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if (msg.message == WmAppExecute)
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{
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var id = unchecked((int)msg.wParam);
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if (_actions.TryRemove(id, out var action))
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{
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try
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{
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action();
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}
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catch (Exception ex)
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{
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Debug.WriteLine($"[WindowsGlobalHotKeyService] Action execution failed: {ex}");
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}
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}
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continue;
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}
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if (msg.message == WmQuit)
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{
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break;
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}
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TranslateMessage(ref msg);
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DispatchMessage(ref msg);
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}
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_threadStarted?.Dispose();
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_threadStarted = null;
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}
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private void InvokeOnHotKeyThread(Action action)
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{
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var id = Interlocked.Increment(ref _actionId);
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_actions[id] = action;
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if (!PostThreadMessage(_threadId, WmAppExecute, (UIntPtr)id, IntPtr.Zero))
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{
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_actions.TryRemove(id, out _);
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}
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}
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private static uint ParseModifiers(string modifiers)
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{
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uint mod = 0;
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if (string.IsNullOrWhiteSpace(modifiers)) return mod;
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var parts = modifiers.Split(',');
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foreach (var part in parts)
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{
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var p = part.Trim();
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if (p.Equals("Control", StringComparison.OrdinalIgnoreCase)) mod |= ModControl;
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if (p.Equals("Alt", StringComparison.OrdinalIgnoreCase)) mod |= ModAlt;
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if (p.Equals("Shift", StringComparison.OrdinalIgnoreCase)) mod |= ModShift;
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if (p.Equals("Windows", StringComparison.OrdinalIgnoreCase)) mod |= ModWin;
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}
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return mod;
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}
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private static uint ParseKey(string key)
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{
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if (string.IsNullOrWhiteSpace(key)) return 0;
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if (key.Length == 1)
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{
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var c = char.ToUpperInvariant(key[0]);
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if (c is >= 'A' and <= 'Z') return c;
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if (c is >= '0' and <= '9') return c;
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}
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return 0x58; // Default 'X'
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}
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/// <inheritdoc />
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public void Dispose()
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{
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if (_isDisposed) return;
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_isDisposed = true;
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try
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{
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UnregisterHotKey();
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}
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catch
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{
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}
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if (_threadId != 0)
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{
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PostThreadMessage(_threadId, WmQuit, UIntPtr.Zero, IntPtr.Zero);
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}
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}
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[StructLayout(LayoutKind.Sequential)]
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private struct Msg
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{
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public IntPtr hwnd;
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public uint message;
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public UIntPtr wParam;
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public IntPtr lParam;
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public uint time;
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public POINT pt;
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}
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[StructLayout(LayoutKind.Sequential)]
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private struct POINT
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{
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public int x;
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public int y;
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}
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[DllImport("user32.dll", SetLastError = true)]
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private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);
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[DllImport("user32.dll", SetLastError = true)]
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private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
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[DllImport("user32.dll")]
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private static extern sbyte GetMessage(out Msg lpMsg, IntPtr hWnd, uint wMsgFilterMin, uint wMsgFilterMax);
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[DllImport("user32.dll")]
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private static extern bool TranslateMessage(ref Msg lpMsg);
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[DllImport("user32.dll")]
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private static extern IntPtr DispatchMessage(ref Msg lpMsg);
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[DllImport("user32.dll", SetLastError = true)]
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private static extern bool PostThreadMessage(uint idThread, uint msg, UIntPtr wParam, IntPtr lParam);
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[DllImport("kernel32.dll")]
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private static extern uint GetCurrentThreadId();
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}
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