mcs/class/corlib/System.Runtime.InteropServices/MarshalAsAttribute.cs

   1 //
   2 // System.Runtime.InteropServices.MarshalAsAttribute.cs
   3 //
   4 // Author:
   5 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   6 //
   7
   8 //
   9 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Runtime.CompilerServices;
  33
  34 namespace System.Runtime.InteropServices {
  35
  36         [ComVisible(true)]
  37         [AttributeUsage (AttributeTargets.Field | AttributeTargets.Parameter |
  38                          AttributeTargets.ReturnValue, Inherited=false)]
  39         [StructLayout (LayoutKind.Sequential)]
  40         public sealed class MarshalAsAttribute : Attribute {
  41                 /*keep these fields in sync with object-internals.h*/
  42 #pragma warning disable 169, 414
  43                 public string MarshalCookie;
  44                 [ComVisible(true)]
  45                 public string MarshalType;
  46
  47                 [ComVisible(true)]
  48                 [PreserveDependency ("GetCustomMarshalerInstance", "System.Runtime.InteropServices.Marshal")]
  49                 public Type MarshalTypeRef;
  50                 public Type SafeArrayUserDefinedSubType;
  51
  52                 private UnmanagedType utype;
  53                 public UnmanagedType ArraySubType;
  54                 public VarEnum SafeArraySubType;
  55                 public int SizeConst;
  56                 public int IidParameterIndex;
  57                 public short SizeParamIndex;
  58 #pragma warning disable 169, 414
  59
  60                 public MarshalAsAttribute (short unmanagedType) {
  61                         utype = (UnmanagedType)unmanagedType;
  62                 }
  63                 public MarshalAsAttribute( UnmanagedType unmanagedType) {
  64                         utype = unmanagedType;
  65                 }
  66                 public UnmanagedType Value {
  67                         get {return utype;}
  68                 }
  69
  70                 internal MarshalAsAttribute Copy ()
  71                 {
  72                         return (MarshalAsAttribute)this.MemberwiseClone ();
  73                 }
  74         }
  75 }