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Globaler Hotkey in der Konsolenanwendung

Kann jemand die RegisterHotKey/UnregisterHotKey-API-Aufrufe in einer Konsolenanwendung verwenden? Ich gehe davon aus, dass das Einrichten/Entfernen des Hotkeys gleich ist, aber wie bekomme ich den Anruf zurück, wenn die Taste gedrückt wurde? 

Jedes Beispiel, das ich sehe, ist für Winforms und verwendet protected override void WndProc(ref Message m){...}, das mir nicht zur Verfügung steht.


aktualisieren: Was ich habe, ist unten, aber die Veranstaltung wird nie getroffen. Ich dachte, es könnte daran liegen, dass beim Laden von ConsoleShell die weitere Ausführung blockiert wird, aber selbst wenn ich SetupHotkey in einen anderen Thread stecke, passiert nichts. Irgendwelche Gedanken?

class Program
{
    static void Main(string[] args)
    {
        new Hud().Init(args);
    }
}

class Hud
{
    int keyHookId;


    public void Init(string[] args)
    {
        SetupHotkey();
        InitPowershell(args);
        Cleanup();
    }

    private void Cleanup()
    {
        HotKeyManager.UnregisterHotKey(keyHookId);
    }

    private void SetupHotkey()
    {
        keyHookId = HotKeyManager.RegisterHotKey(Keys.Oemtilde, KeyModifiers.Control);
        HotKeyManager.HotKeyPressed += new EventHandler<HotKeyEventArgs>(HotKeyManager_HotKeyPressed);
    }

    void HotKeyManager_HotKeyPressed(object sender, HotKeyEventArgs e)
    {
        //never executed
        System.IO.File.WriteAllText("c:\\keyPressed.txt", "Hotkey pressed");
    }

    private static void InitPowershell(string[] args)
    {
        var config = RunspaceConfiguration.Create();
        ConsoleShell.Start(config, "", "", args);
    }
}
36
Joe

Sie können in Ihrer Konsolenanwendung ein verborgenes Fenster erstellen, in dem die Hotkey-Benachrichtigung verarbeitet und ein Ereignis ausgelöst wird.

Der Code HIER zeigt den Prinzipal. HERE ist ein Artikel zum Umgang mit Nachrichten in einer Konsolenanwendung. Hiermit sollten Sie HotKeyManager für die Ausführung in einer Konsolenanwendung erweitern können.

Mit dem folgenden Update für den HotKeyManager wird ein Hintergrundthread erstellt, der die Nachrichtenschleife ausführt und die Windows-Nachrichten verarbeitet.

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Threading;

namespace ConsoleHotKey
{
  public static class HotKeyManager
  {
    public static event EventHandler<HotKeyEventArgs> HotKeyPressed;

    public static int RegisterHotKey(Keys key, KeyModifiers modifiers)
    {
      _windowReadyEvent.WaitOne();
      int id = System.Threading.Interlocked.Increment(ref _id);
      _wnd.Invoke(new RegisterHotKeyDelegate(RegisterHotKeyInternal), _hwnd, id, (uint)modifiers, (uint)key);
      return id;
    }

    public static void UnregisterHotKey(int id)
    {
      _wnd.Invoke(new UnRegisterHotKeyDelegate(UnRegisterHotKeyInternal), _hwnd, id);
    }

    delegate void RegisterHotKeyDelegate(IntPtr hwnd, int id, uint modifiers, uint key);
    delegate void UnRegisterHotKeyDelegate(IntPtr hwnd, int id);

    private static void RegisterHotKeyInternal(IntPtr hwnd, int id, uint modifiers, uint key)
    {      
      RegisterHotKey(hwnd, id, modifiers, key);      
    }

    private static void UnRegisterHotKeyInternal(IntPtr hwnd, int id)
    {
      UnregisterHotKey(_hwnd, id);
    }    

    private static void OnHotKeyPressed(HotKeyEventArgs e)
    {
      if (HotKeyManager.HotKeyPressed != null)
      {
        HotKeyManager.HotKeyPressed(null, e);
      }
    }

    private static volatile MessageWindow _wnd;
    private static volatile IntPtr _hwnd;
    private static ManualResetEvent _windowReadyEvent = new ManualResetEvent(false);
    static HotKeyManager()
    {
      Thread messageLoop = new Thread(delegate()
        {
          Application.Run(new MessageWindow());
        });
      messageLoop.Name = "MessageLoopThread";
      messageLoop.IsBackground = true;
      messageLoop.Start();      
    }

    private class MessageWindow : Form
    {
      public MessageWindow()
      {
        _wnd = this;
        _hwnd = this.Handle;
        _windowReadyEvent.Set();
      }

      protected override void WndProc(ref Message m)
      {
        if (m.Msg == WM_HOTKEY)
        {
          HotKeyEventArgs e = new HotKeyEventArgs(m.LParam);
          HotKeyManager.OnHotKeyPressed(e);
        }

        base.WndProc(ref m);
      }

      protected override void SetVisibleCore(bool value)
      {
        // Ensure the window never becomes visible
        base.SetVisibleCore(false);
      }

      private const int WM_HOTKEY = 0x312;
    }

    [DllImport("user32", SetLastError=true)]
    private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);

    [DllImport("user32", SetLastError = true)]
    private static extern bool UnregisterHotKey(IntPtr hWnd, int id);

    private static int _id = 0;
  }


  public class HotKeyEventArgs : EventArgs
  {
    public readonly Keys Key;
    public readonly KeyModifiers Modifiers;

    public HotKeyEventArgs(Keys key, KeyModifiers modifiers)
    {
      this.Key = key;
      this.Modifiers = modifiers;
    }

    public HotKeyEventArgs(IntPtr hotKeyParam)
    {
      uint param = (uint)hotKeyParam.ToInt64();
      Key = (Keys)((param & 0xffff0000) >> 16);
      Modifiers = (KeyModifiers)(param & 0x0000ffff);
    }
  }

  [Flags]
  public enum KeyModifiers
  {
    Alt = 1,
    Control = 2,
    Shift = 4,
    Windows = 8,
    NoRepeat = 0x4000
  }
}

Hier ist ein Beispiel für die Verwendung von HotKeyManager in einer Konsolenanwendung

using System;
using System.Windows.Forms;

namespace ConsoleHotKey
{
  class Program
  {
    static void Main(string[] args)
    {
      HotKeyManager.RegisterHotKey(Keys.A, KeyModifiers.Alt);
      HotKeyManager.HotKeyPressed += new EventHandler<HotKeyEventArgs>(HotKeyManager_HotKeyPressed);
      Console.ReadLine();      
    }

    static void HotKeyManager_HotKeyPressed(object sender, HotKeyEventArgs e)
    {
      Console.WriteLine("Hit me!");
    }
  }
}
61
Chris Taylor

Ich wollte nur eine alternative Lösung anbieten.

Ich beantwortete eine Frage für jemanden, der dieses Skript verwendete, und ich dachte, dies könnte jemand anderem helfen, der Schwierigkeiten hat, einen globalen Schlüsselbaustein einzurichten.

Bearbeiten: Vergessen Sie nicht, einen Verweis auf System.Windows.Forms hinzuzufügen.

Sie können dies tun, indem Sie Project ???? Add Reference auswählen und System.Windows.Forms überprüfen.

enter image description here

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace ConsoleKeyhook
{
class Hooky
{
    ///////////////////////////////////////////////////////////
    //A bunch of DLL Imports to set a low level keyboard hook
    ///////////////////////////////////////////////////////////
    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern IntPtr SetWindowsHookEx(int idHook,
        LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    private static extern bool UnhookWindowsHookEx(IntPtr hhk);

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
        IntPtr wParam, IntPtr lParam);

    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern IntPtr GetModuleHandle(string lpModuleName);

    ////////////////////////////////////////////////////////////////
    //Some constants to make handling our hook code easier to read
    ////////////////////////////////////////////////////////////////
    private const int WH_KEYBOARD_LL = 13;                    //Type of Hook - Low Level Keyboard
    private const int WM_KEYDOWN = 0x0100;                    //Value passed on KeyDown
    private const int WM_KEYUP = 0x0101;                      //Value passed on KeyUp
    private static LowLevelKeyboardProc _proc = HookCallback; //The function called when a key is pressed
    private static IntPtr _hookID = IntPtr.Zero;
    private static bool CONTROL_DOWN = false;                 //Bool to use as a flag for control key

    public static void Main()
    {
        _hookID = SetHook(_proc);  //Set our hook
        Application.Run();         //Start a standard application method loop
    }

    private static IntPtr SetHook(LowLevelKeyboardProc proc)
    {
        using (Process curProcess = Process.GetCurrentProcess())
        using (ProcessModule curModule = curProcess.MainModule)
        {
            return SetWindowsHookEx(WH_KEYBOARD_LL, proc,
                GetModuleHandle(curModule.ModuleName), 0);
        }
    }

    private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);

    private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
    {
        if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN) //A Key was pressed down
        {
            int vkCode = Marshal.ReadInt32(lParam);           //Get the keycode
            string theKey = ((Keys)vkCode).ToString();        //Name of the key
            Console.Write(theKey);                            //Display the name of the key
            if (theKey.Contains("ControlKey"))                //If they pressed control
            {
                CONTROL_DOWN = true;                          //Flag control as down
            }
            else if (CONTROL_DOWN && theKey == "B")           //If they held CTRL and pressed B
            {
                Console.WriteLine("\n***HOTKEY PRESSED***");  //Our hotkey was pressed
            }
            else if (theKey == "Escape")                      //If they press escape
            {
                UnhookWindowsHookEx(_hookID);                 //Release our hook
                Environment.Exit(0);                          //Exit our program
            }
        }
        else if (nCode >= 0 && wParam == (IntPtr)WM_KEYUP) //KeyUP
        {
            int vkCode = Marshal.ReadInt32(lParam);        //Get Keycode
            string theKey = ((Keys)vkCode).ToString();     //Get Key name
            if (theKey.Contains("ControlKey"))             //If they let go of control
            {
                CONTROL_DOWN = false;                      //Unflag control
            }
        }
        return CallNextHookEx(_hookID, nCode, wParam, lParam); //Call the next hook
    }
}
}
6
user1274820

Ich habe eine Lösung gefunden, die auf Chris 'Antwort basiert und WPF anstelle von WinForms verwendet:

public sealed class GlobalHotkeyRegister : IGlobalHotkeyRegister, IDisposable
{
    private const int WmHotkey = 0x0312;

    private Application _app;
    private readonly Dictionary<Hotkey, Action> _hotkeyActions;

    public GlobalHotkeyRegister()
    {
        _hotkeyActions = new Dictionary<Hotkey, Action>();
        var startupTcs = new TaskCompletionSource<object>();

        Task.Run(() =>
        {
            ComponentDispatcher.ThreadPreprocessMessage += OnThreadPreProcessMessage;

            _app = new Application();
            _app.Startup += (s, e) => startupTcs.SetResult(null);
            _app.Run();
        });

        startupTcs.Task.Wait();
    }

    public void Add(Hotkey hotkey, Action action)
    {
        _hotkeyActions.Add(hotkey, action);

        var keyModifier = (int) hotkey.KeyModifier;
        var key = KeyInterop.VirtualKeyFromKey(hotkey.Key);

        _app.Dispatcher.Invoke(() =>
        {
            if (!RegisterHotKey(IntPtr.Zero, hotkey.GetHashCode(), keyModifier, key))
                throw new Win32Exception(Marshal.GetLastWin32Error());
        });       
    }

    public void Remove(Hotkey hotkey)
    {
        _hotkeyActions.Remove(hotkey);

        _app.Dispatcher.Invoke(() =>
        {
            if (!UnregisterHotKey(IntPtr.Zero, hotkey.GetHashCode()))
                throw new Win32Exception(Marshal.GetLastWin32Error());
        });
    }

    private void OnThreadPreProcessMessage(ref MSG msg, ref bool handled)
    {
        if (msg.message != WmHotkey)
            return;

        var key = KeyInterop.KeyFromVirtualKey(((int) msg.lParam >> 16) & 0xFFFF);
        var keyModifier = (KeyModifier) ((int) msg.lParam & 0xFFFF);

        var hotKey = new Hotkey(keyModifier, key);
        _hotkeyActions[hotKey]();
    }

    public void Dispose()
    {
        _app.Dispatcher.InvokeShutdown();
    }

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

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

public class Hotkey
{
    public Hotkey(KeyModifier keyModifier, Key key)
    {
        KeyModifier = keyModifier;
        Key = key;
    }

    public KeyModifier KeyModifier { get; }
    public Key Key { get; }

    #region ToString(), Equals() and GetHashcode() overrides
}

[Flags]
public enum KeyModifier
{
    None = 0x0000,
    Alt = 0x0001,
    Ctrl = 0x0002,
    Shift = 0x0004,
    Win = 0x0008,
    NoRepeat = 0x4000
}

Um dies zu verwenden, müssen Sie Verweise auf PresentationFramework.dll und WindowsBase.dll hinzufügen.

public static void Main()
{
    using (var hotkeyManager = new GlobalHotkeyManager())
    {
        var hotkey = new Hotkey(KeyModifier.Ctrl | KeyModifier.Alt, Key.S);
        hotkeyManager.Add(hotkey, () => System.Console.WriteLine(hotkey));

        System.Console.ReadKey();
    }
}
1
Matt Cole

Die HotKeyManager-Klasse wurde geändert

public static class HotKeyManager
    {
        public static event EventHandler<HotKeyEventArgs> HotKeyPressed;

        public static int RegisterHotKey(Keys key, HotKeyEventArgs.KeyModifiers modifiers)
        {
            _windowReadyEvent.WaitOne();
            _wnd.Invoke(new RegisterHotKeyDelegate(RegisterHotKeyInternal), _hwnd, Interlocked.Increment(ref _id), (uint)modifiers, (uint)key);
            return Interlocked.Increment(ref _id);
        }

        public static void UnregisterHotKey(int id)
        {
            _wnd.Invoke(new UnRegisterHotKeyDelegate(UnRegisterHotKeyInternal), _hwnd, id);
        }

        private delegate void RegisterHotKeyDelegate(IntPtr hwnd, int id, uint modifiers, uint key);
        private delegate void UnRegisterHotKeyDelegate(IntPtr hwnd, int id);

        private static void RegisterHotKeyInternal(IntPtr hwnd, int id, uint modifiers, uint key)
        {
            RegisterHotKey(hWnd: hwnd, id: id, fsModifiers: modifiers, vk: key);
        }

        private static void UnRegisterHotKeyInternal(IntPtr hwnd, int id)
        {
            UnregisterHotKey(_hwnd, id);
        }

        private static void OnHotKeyPressed(HotKeyEventArgs e)
        {
            HotKeyPressed?.Invoke(null, e);
        }

        private static volatile MessageWindow _wnd;
        private static volatile IntPtr _hwnd;
        private static ManualResetEvent _windowReadyEvent = new ManualResetEvent(false);

        static HotKeyManager()
        {
            new Thread(delegate ()
                        {
                            Application.Run(new MessageWindow());
                        })
            {
                Name = "MessageLoopThread",
                IsBackground = true
            }.Start();
        }

        private class MessageWindow : Form
        {
            public MessageWindow()
            {
                _wnd = this;
                _hwnd = Handle;
                _windowReadyEvent.Set();
            }

            protected override void WndProc(ref Message m)
            {
                if (m.Msg == WM_HOTKEY)
                {
                    var e = new HotKeyEventArgs(hotKeyParam: m.LParam);
                    OnHotKeyPressed(e);
                }

                base.WndProc(m: ref m);
            }

            protected override void SetVisibleCore(bool value)
            {
                // Ensure the window never becomes visible
                base.SetVisibleCore(false);
            }

            private const int WM_HOTKEY = 0x312;
        }

        [DllImport("user32", SetLastError = true)]
        private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);

        [DllImport("user32", SetLastError = true)]
        private static extern bool UnregisterHotKey(IntPtr hWnd, int id);

        private static int _id = 0;
    }

Klasse HotKeyEventArgs: 

public partial class HotKeyEventArgs : EventArgs
    {
        public readonly Keys Key;
        public readonly KeyModifiers Modifiers;

        public HotKeyEventArgs(Keys key, KeyModifiers modifiers)
        {
            Key = key;
            Modifiers = modifiers;
        }

        public HotKeyEventArgs(IntPtr hotKeyParam)
        {
            Key = (Keys)(((uint)hotKeyParam.ToInt64() & 0xffff0000) >> 16);
            Modifiers = (KeyModifiers)((uint)hotKeyParam.ToInt64() & 0x0000ffff);
        }
    }

Und Klasse: HotKeyEventArgs

public partial class HotKeyEventArgs
    {
        [Flags]
        public enum KeyModifiers
        {
            Alt = 1,
            Control = 2,
            Shift = 4,
            Windows = 8,
            NoRepeat = 0x4000
        }
    }
0
GooliveR