2 // Microsoft.Win32.SystemEvents.cs
5 // Johannes Roith (johannes@jroith.de)
6 // Andreas Nahr (ClassDevelopment@A-SoftTech.com)
8 // (C) 2002 Johannes Roith
9 // (C) 2003 Andreas Nahr
10 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
12 // Permission is hereby granted, free of charge, to any person obtaining
13 // a copy of this software and associated documentation files (the
14 // "Software"), to deal in the Software without restriction, including
15 // without limitation the rights to use, copy, modify, merge, publish,
16 // distribute, sublicense, and/or sell copies of the Software, and to
17 // permit persons to whom the Software is furnished to do so, subject to
18 // the following conditions:
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System.Collections;
34 using System.ComponentModel;
35 using System.Security.Permissions;
38 namespace Microsoft.Win32 {
\r
40 [PermissionSet (SecurityAction.LinkDemand, Unrestricted = true)]
41 public sealed class SystemEvents
43 private static Hashtable TimerStore = new Hashtable ();
45 private SystemEvents ()
49 // You can use timers using the CreateTimer, KillTimer methods and the Timerelapsed event
50 // This is only a partial solution, as it only works in managed code.
51 // TODO implement this on OS level
52 // Till done this solution should work if you are only using the mentioned members
54 public static IntPtr CreateTimer (int interval)
56 Guid Ident = Guid.NewGuid ();
57 int IdentValue = Ident.GetHashCode ();
58 Timer t = new System.Timers.Timer (interval);
59 t.Elapsed += new ElapsedEventHandler (InternalTimerElapsed);
60 TimerStore.Add (IdentValue, t);
61 return new IntPtr (IdentValue);
64 public static void KillTimer (IntPtr timerId)
66 Timer t = (Timer) TimerStore[timerId.GetHashCode()];
68 t.Elapsed -= new ElapsedEventHandler (InternalTimerElapsed);
70 TimerStore.Remove (timerId.GetHashCode());
73 private static void InternalTimerElapsed (object e, ElapsedEventArgs args)
75 if (TimerElapsed != null)
76 TimerElapsed (null, new TimerElapsedEventArgs (IntPtr.Zero));
80 public static void InvokeOnEventsThread(Delegate method)
82 throw new System.NotImplementedException ();
86 public static event System.EventHandler DisplaySettingsChanged
93 public static event EventHandler DisplaySettingsChanging {
99 public static event System.EventHandler EventsThreadShutdown
106 public static event System.EventHandler InstalledFontsChanged
115 [EditorBrowsable (EditorBrowsableState.Never)]
118 public static event System.EventHandler LowMemory
125 public static event System.EventHandler PaletteChanged
132 public static event PowerModeChangedEventHandler PowerModeChanged
139 public static event SessionEndedEventHandler SessionEnded
146 public static event SessionEndingEventHandler SessionEnding
153 public static event SessionSwitchEventHandler SessionSwitch {
159 public static event System.EventHandler TimeChanged
165 public static event TimerElapsedEventHandler TimerElapsed;
168 public static event UserPreferenceChangedEventHandler UserPreferenceChanged
175 public static event UserPreferenceChangingEventHandler UserPreferenceChanging