.NET Framework 3.5? ???? WPF ??????? ?? ??? ??

??:

.NET Framework 3.5? ???? ??? WPF ????????? ?? ? ???? ????? Windows ?? ????? ??? ???? ??? ?????.

???:

WPF ? .NET Framework 3.5?? ?? ???? ????? ?? ??? ????.

1. ??? DLL ????:

using System;
using System.Runtime.InteropServices;
using System.Windows.Interop;

2. ??? ??? ? ?? ??:

[DllImport("user32.dll")]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, UInt32 fsModifiers, UInt32 vlc);

[DllImport("user32.dll")]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);

const int WmHotKey = 0x0312;

3. ??? ?? ? ??? ???? ?? HotKey ??? ???:

public class HotKey : IDisposable
{
    private bool _disposed;
    private Key _key;
    private KeyModifier _keyModifiers;
    private Action<HotKey> _action;
    private int _id;
    private static Dictionary<int, HotKey> _dictHotKeyToCalBackProc;

    public HotKey(Key k, KeyModifier keyModifiers, Action<HotKey> action, bool register = true)
    {
        _key = k;
        _keyModifiers = keyModifiers;
        _action = action;
        if (register)
            Register();
    }

    public bool Register()
    {
        int virtualKeyCode = KeyInterop.VirtualKeyFromKey(_key);
        _id = virtualKeyCode + ((int)_keyModifiers * 0x10000);
        bool result = RegisterHotKey(IntPtr.Zero, _id, (UInt32)_keyModifiers, (UInt32)virtualKeyCode);

        if (_dictHotKeyToCalBackProc == null)
        {
            _dictHotKeyToCalBackProc = new Dictionary<int, HotKey>();
            ComponentDispatcher.ThreadFilterMessage += ComponentDispatcherThreadFilterMessage;
        }

        _dictHotKeyToCalBackProc.Add(_id, this);
        return result;
    }

    public void Unregister()
    {
        _dictHotKeyToCalBackProc.Remove(_id);
        UnregisterHotKey(IntPtr.Zero, _id);
    }

    private static void ComponentDispatcherThreadFilterMessage(ref MSG msg, ref bool handled)
    {
        if (msg.message == WmHotKey)
        {
            HotKey hotKey;

            if (_dictHotKeyToCalBackProc.TryGetValue((int)msg.wParam, out hotKey))
            {
                hotKey._action.Invoke(hotKey);
                handled = true;
            }
        }
    }

    protected virtual void Dispose(bool disposing)
    {
        if (!_disposed)
        {
            if (disposing)
            {
                Unregister();
            }
            _disposed = true;
        }
    }

    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }
}

4. HotKey ???? ???? ??? ???? ???? ?????. ?:

// 注冊(cè)CTRL+SHIFT+F9熱鍵
HotKey hotKey = new HotKey(Key.F9, KeyModifier.Shift | KeyModifier.Ctrl, OnHotKeyHandler);

private void OnHotKeyHandler(HotKey hotKey)
{
    // 按下熱鍵時(shí)執(zhí)行操作
}

? ??? ? ???? ?? ?? ?? ???? ?? ?????, Unregister ???? ???? ???? ???? ??? ???? ???? ??? ???? ???? ?????. ?? ??? ??? ???? ?? ??? ???? ?? ???? ?? ?? ??? ?????. Dispose

? ??? .NET Framework 3.5? ???? WPF ?? ????? ?? ???? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!