93 lines
3.2 KiB
C#
93 lines
3.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Windows;
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using System.Windows.Forms;
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using System.Windows.Input;
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using System.Windows.Interop;
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namespace GeekDesk.Util
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{
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public class GlobalHotKey
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{
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public enum HotkeyModifiers
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{
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MOD_ALT = 0x1,
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MOD_CONTROL = 0x2,
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MOD_SHIFT = 0x4,
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MOD_WIN = 0x8
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}
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private static int currentID;
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private static readonly Dictionary<int, InvisibleWindowForMessages> handleTemp = new Dictionary<int, InvisibleWindowForMessages>();
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public delegate void HotKeyCallBackHanlder();
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/// <summary>
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/// Registers a global hotkey
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/// </summary>
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/// <param name="aKeyGestureString">e.g. Alt + Shift + Control + Win + S</param>
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/// <param name="callback">Action to be called when hotkey is pressed</param>
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/// <returns>true, if registration succeeded, otherwise false</returns>
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public static int RegisterHotKey(string aKeyGestureString, HotKeyCallBackHanlder callback)
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{
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var c = new KeyGestureConverter();
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KeyGesture aKeyGesture = (KeyGesture)c.ConvertFrom(aKeyGestureString);
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return RegisterHotKey((HotkeyModifiers)aKeyGesture.Modifiers, aKeyGesture.Key, callback);
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}
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public static int RegisterHotKey(HotkeyModifiers aModifier, Key key, HotKeyCallBackHanlder callback)
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{
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InvisibleWindowForMessages window = new InvisibleWindowForMessages(callback);
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currentID += 1;
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if (!RegisterHotKey(window.Handle, currentID, aModifier, (uint)KeyInterop.VirtualKeyFromKey(key)))
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{
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window.Dispose();
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throw new Exception("RegisterHotKey Failed");
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}
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handleTemp.Add(currentID, window);
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return currentID;
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}
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public static void Dispose(int id)
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{
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bool test = UnregisterHotKey(handleTemp[id].Handle, id);
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GlobalHotKey.handleTemp[id].Dispose();
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GlobalHotKey.handleTemp.Remove(id);
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Console.WriteLine(test);
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}
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// Registers a hot key with Windows.
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[DllImport("user32.dll")]
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private static extern bool RegisterHotKey(IntPtr hWnd, int id, HotkeyModifiers fsModifiers, uint vk);
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// Unregisters the hot key with Windows.
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[DllImport("user32.dll")]
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private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
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private class InvisibleWindowForMessages : NativeWindow, IDisposable
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{
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public event HotKeyCallBackHanlder callback;
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public InvisibleWindowForMessages(HotKeyCallBackHanlder callback)
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{
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CreateHandle(new CreateParams());
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this.callback += callback;
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}
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private static readonly int WM_HOTKEY = 0x0312;
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protected override void WndProc(ref Message m)
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{
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base.WndProc(ref m);
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if (m.Msg == WM_HOTKEY)
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{
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callback();
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}
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}
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public void Dispose()
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{
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this.DestroyHandle();
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}
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}
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}
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}
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