ExtensibleClassFactory.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Runtime / InteropServices / ExtensibleClassFactory.cs / 1 / ExtensibleClassFactory.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*==============================================================================
** 
** Class: ExtensibleClassFactory 
**
** 
** Purpose: Methods used to customize the creation of managed objects that
**          extend from unmanaged objects.
**
** 
=============================================================================*/
 
namespace System.Runtime.InteropServices { 
 	using System.Runtime.InteropServices;
	using System.Runtime.Remoting; 
	using System.Runtime.CompilerServices;

	using System;
[System.Runtime.InteropServices.ComVisible(true)] 
    public sealed class ExtensibleClassFactory
    { 
 
        // Prevent instantiation.
        private ExtensibleClassFactory() {} 

        // Register a delegate that will be called whenever an instance of a managed
        // type that extends from an unmanaged type needs to allocate the aggregated
        // unmanaged object. This delegate is expected to allocate and aggregate the 
        // unmanaged object and is called in place of a CoCreateInstance. This
        // routine must be called in the context of the static initializer for the 
        // class for which the callbacks will be made. 
        // It is not legal to register this callback from a class that has any
        // parents that have already registered a callback. 
        [MethodImplAttribute(MethodImplOptions.InternalCall)]
        public static extern void RegisterObjectCreationCallback(ObjectCreationDelegate callback);
    }
}

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