class/System/Microsoft.Win32/SystemEvents.cs

   1 //
   2 // Microsoft.Win32.SystemEvents.cs
   3 //
   4 // Authors:
   5 //   Johannes Roith (johannes@jroith.de)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) 2002 Johannes Roith
   9 // (C) 2003 Andreas Nahr
  10 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
  11 //
  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:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  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.
  30 //
  31
  32 using System;
  33 using System.Collections;
  34 using System.ComponentModel;
  35 using System.Security.Permissions;
  36 using System.Timers;
  37
  38 namespace Microsoft.Win32 {
  39
  40         [PermissionSet (SecurityAction.LinkDemand, Unrestricted = true)]
  41         public sealed class SystemEvents
  42         {
  43                 private static Hashtable TimerStore = new Hashtable ();
  44
  45                 private SystemEvents ()
  46                 {
  47                 }
  48
  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
  53
  54                 public static IntPtr CreateTimer (int interval)
  55                 {
  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);
  62                 }
  63
  64                 public static void KillTimer (IntPtr timerId)
  65                 {
  66                         Timer t = (Timer) TimerStore[timerId.GetHashCode()];
  67                         t.Stop ();
  68                         t.Elapsed -= new ElapsedEventHandler (InternalTimerElapsed);
  69                         t.Dispose ();
  70                         TimerStore.Remove (timerId.GetHashCode());
  71                 }
  72
  73                 private static void InternalTimerElapsed (object e, ElapsedEventArgs args)
  74                 {
  75                         if (TimerElapsed != null)
  76                                 TimerElapsed (null, new TimerElapsedEventArgs (IntPtr.Zero));
  77                 }
  78
  79                 [MonoTODO]
  80                 public static void InvokeOnEventsThread(Delegate method)
  81                 {
  82                         throw new System.NotImplementedException ();
  83                 }
  84
  85                 [MonoTODO]
  86                 public static event System.EventHandler DisplaySettingsChanged
  87                 {
  88                         add     { }
  89                         remove  { }
  90                 }
  91 #if NET_2_0
  92                 [MonoTODO("Currently does nothing on Mono")]
  93                 public static event EventHandler DisplaySettingsChanging {
  94                         add {  }
  95                         remove { }
  96                 }
  97 #endif
  98                 [MonoTODO("Currently does nothing on Mono")]
  99                 public static event System.EventHandler EventsThreadShutdown
 100                 {
 101                         add     { }
 102                         remove  { }
 103                 }
 104
 105                 [MonoTODO("Currently does nothing on Mono")]
 106                 public static event System.EventHandler InstalledFontsChanged
 107                 {
 108                         add     { }
 109                         remove  { }
 110                 }
 111
 112                 [MonoTODO("Currently does nothing on Mono")]
 113 #if NET_2_0
 114                 [Browsable (false)]
 115                 [EditorBrowsable (EditorBrowsableState.Never)]
 116                 [Obsolete ("")]
 117 #endif
 118                 public static event System.EventHandler LowMemory
 119                 {
 120                         add     { }
 121                         remove  { }
 122                 }
 123
 124                 [MonoTODO("Currently does nothing on Mono")]
 125                 public static event System.EventHandler PaletteChanged
 126                 {
 127                         add     { }
 128                         remove  { }
 129                 }
 130
 131                 [MonoTODO("Currently does nothing on Mono")]
 132                 public static event PowerModeChangedEventHandler PowerModeChanged
 133                 {
 134                         add     { }
 135                         remove  { }
 136                 }
 137
 138                 [MonoTODO("Currently does nothing on Mono")]
 139                 public static event SessionEndedEventHandler SessionEnded
 140                 {
 141                         add     { }
 142                         remove  { }
 143                 }
 144
 145                 [MonoTODO("Currently does nothing on Mono")]
 146                 public static event SessionEndingEventHandler SessionEnding
 147                 {
 148                         add     { }
 149                         remove  { }
 150                 }
 151 #if NET_2_0
 152                 [MonoTODO("Currently does nothing on Mono")]
 153                 public static event SessionSwitchEventHandler SessionSwitch {
 154                         add    { }
 155                         remove { }
 156                 }
 157 #endif
 158                 [MonoTODO("Currently does nothing on Mono")]
 159                 public static event System.EventHandler TimeChanged
 160                 {
 161                         add     { }
 162                         remove  { }
 163                 }
 164
 165                 public static event TimerElapsedEventHandler TimerElapsed;
 166
 167                 [MonoTODO("Currently does nothing on Mono")]
 168                 public static event UserPreferenceChangedEventHandler UserPreferenceChanged
 169                 {
 170                         add     { }
 171                         remove  { }
 172                 }
 173
 174                 [MonoTODO("Currently does nothing on Mono")]
 175                 public static event UserPreferenceChangingEventHandler UserPreferenceChanging
 176                 {
 177                         add     { }
 178                         remove  { }
 179                 }
 180         }
 181 }