Tasto di scelta rapida globale nell’applicazione console

Qualcuno sa come utilizzare le chiamate API RegisterHotKey / UnregisterHotKey in un’applicazione console? Presumo che l’impostazione / rimozione del tasto di scelta rapida sia la stessa, ma come posso richiamare la chiamata quando il tasto è stato premuto?

Ogni esempio che vedo è per Winforms, e usa l’ protected override void WndProc(ref Message m){...} , che non è disponibile per me.


aggiornamento: quello che ho è sotto, ma l’evento non viene mai colpito. Ho pensato che potrebbe essere perché quando si carica ConsoleShell si blocca l’ulteriore esecuzione, ma anche se metto SetupHotkey in un thread diverso non succede nulla. qualche idea?

 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(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); } } 

Quello che puoi fare è Creare una finestra nascosta nella tua applicazione Console che viene utilizzata per gestire la notifica hotkey e generare un evento.

Il codice QUI mostra il principale. QUI è un articolo sulla gestione dei messaggi in un’applicazione console, utilizzando questo si dovrebbe essere in grado di migliorare HotKeyManager per l’esecuzione in un’applicazione console.

Il seguente aggiornamento a HotKeyManager crea un thread in background che esegue il loop dei messaggi e gestisce i messaggi di Windows.

 using System; using System.Windows.Forms; using System.Runtime.InteropServices; using System.Threading; namespace ConsoleHotKey { public static class HotKeyManager { public static event EventHandler 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 } } 

Ecco un esempio di utilizzo di HotKeyManager da un’applicazione console

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

Volevo solo offrire una soluzione alternativa.

Stavo rispondendo a una domanda per qualcuno che stava usando questo script e ho pensato che questo avrebbe potuto aiutare qualcun altro che ha difficoltà a impostare un aghook globale.

Modifica: non dimenticare di aggiungere un riferimento a System.Windows.Forms

È ansible farlo selezionando Project 🢂 Add Reference e controllando System.Windows.Forms

inserisci la descrizione dell'immagine qui

 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 } } } 

Ho trovato una soluzione basata sulla risposta di Chris che usa WPF invece di WinForms:

 public sealed class GlobalHotkeyRegister : IGlobalHotkeyRegister, IDisposable { private const int WmHotkey = 0x0312; private Application _app; private readonly Dictionary _hotkeyActions; public GlobalHotkeyRegister() { _hotkeyActions = new Dictionary(); var startupTcs = new TaskCompletionSource(); 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 } 

Per utilizzare questo, è necessario aggiungere riferimenti a PresentationFramework.dll e WindowsBase.dll.

 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(); } } 

Modificata la class HotKeyManager

 public static class HotKeyManager { public static event EventHandler 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; } 

Classe 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); } } 

E class: HotKeyEventArgs

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