class/corlib/System.Runtime.InteropServices/HandleRef.cs

   1 //
   2 // System.Runtime.InteropServices.HandleRef
   3 //
   4 // Author:
   5 //   Tim Coleman (tim@timcoleman.com)
   6 //
   7 // Copyright (C) 2003 Tim Coleman
   8
   9 //
  10 // Copyright (C) 2004 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
  34 namespace System.Runtime.InteropServices {
  35         [ComVisible (true)]
  36         public struct HandleRef {
  37
  38                 #region Fields
  39
  40                 object wrapper;
  41                 IntPtr handle;
  42
  43                 #endregion // Fields
  44
  45                 #region Constructors
  46
  47                 public HandleRef (object wrapper, IntPtr handle)
  48                 {
  49                         this.wrapper = wrapper;
  50                         this.handle = handle;
  51                 }
  52
  53                 #endregion // Constructors
  54
  55                 #region Properties
  56
  57                 public IntPtr Handle {
  58                         get { return handle; }
  59                 }
  60
  61                 public object Wrapper {
  62                         get { return wrapper; }
  63                 }
  64
  65                 #endregion // Properties
  66
  67                 #region Type Conversions
  68
  69                 public static explicit operator IntPtr (HandleRef value)
  70                 {
  71                         return value.Handle;
  72                 }
  73
  74                 #endregion // Type Conversions
  75                 public static IntPtr ToIntPtr(HandleRef value)
  76                 {
  77                         return value.Handle;
  78                         // Why did MS add a function for this?
  79                 }
  80         }
  81 }